Natural Standard Blog

Tea for Health

This summer, don't hesitate to cool off with a glass of (unsweetened) iced tea. A new study emphasized the many health benefits of the second most popular beverage in the world.

Green tea, black tea and oolong tea are all infusions of dried leaves from the Camellia sinensis plant. Researchers from Wayne State University in Detroit, MI, explained that tea leaves contain polyphenolic compounds known as catechins. These molecules function as powerful antioxidants and may improve health and reduce the risk of disease.

The researchers observed that although tea has been consumed for centuries, it has only recently been studied extensively as a health-promoting beverage that may act to prevent a number of chronic diseases and cancers.

Green tea consumption is associated with lower plasma concentrations of cholesterol. Thus, green tea may be of modest benefit in preventing atherosclerosis or the hardening of the arteries. Furthermore, the cancer-preventive effects of green tea are widely supported by epidemiological and clinical studies.

In cell culture studies, green tea catechins induce cell death and cell cycle arrest in cancer cells, but not in normal cells. In animal studies, green tea can inhibit tumors in various organs such as the skin, lungs, liver, stomach, mammary glands and colon.

Recently, clinical trials have explored the anticancer effects of green tea in humans. Tea is a source of caffeine, a molecule that stimulates the central nervous system and the heart. Caffeine also acts on the kidney as a diuretic increasing urine flow.

One cup of tea contains approximately 50 milligrams of caffeine, depending on the strength of the tea and the size of the cup. Tea also contains polyphenols (catechins, anthocyanins, phenolic acids), tannin, trace elements and vitamins.

The study authors concluded that identifying the molecular targets of green tea polyphenols may pave the way for more well-designed clinical trials. By examining how components of tea interact with various biomarkers of cancer, scientists hope to better understand the mechanisms underlying green tea's anti-cancer activity.

For more information on green or black tea, please visit Natural Standard's Foods, Herbs & Supplements database.

 

Eggs and Heart Disease

A new study supports consuming eggs in moderation after finding no evidence that eggs increase the risk of cardiovascular disease.

Conditions that affect the heart or blood vessels are collectively known as cardiovascular diseases. These include atherosclerosis (hardening of the arteries), coronary artery disease, heart valve disease, arrhythmia (irregular heartbeat), heart failure, high blood pressure, low blood pressure, shock, endocarditis (bacterial infection of the heart), diseases of the aorta and its branches, disorders of the peripheral vascular system and congenital heart disease.

Reducing dietary cholesterol is important for preventing cardiovascular disease (CVD). Researchers from Harvard Medical School explained that although eggs are high in cholesterol, there is limited and inconsistent evidence that egg consumption increases CVD risk and mortality.

The researchers examined the association between egg consumption and cardiovascular disease in 21,327 participants from the Physicians' Health Study I. Egg consumption was assessed with an abbreviated food questionnaire.

After an average follow-up of 20 years, 1,550 new heart attacks, 1,342 incident strokes and 5,169 deaths occurred. The study found that egg consumption was not associated with incident heart attack or stroke.

The study authors concluded that occasional egg consumption does not seem to influence the risk of CVD in males. However, egg consumption was positively correlated with mortality, especially in diabetic subjects.

Integrative therapies with strong scientific evidence in the treatment of heart conditions include beta-glucan, beta-sitosterol, niacin, omega-3 fatty acids, policosanol, psyllium, red yeast rice and soy. These can be ingested through a healthy diet in addition to eggs.

Beta-glucan is a fiber that comes from the cell walls of algae, bacteria, fungi, yeasts and plants. Numerous trials have examined the effects of oral beta-glucan on cholesterol. Small reductions in total and low density lipoprotein (LDL) cholesterol ("bad" cholesterol) have been reported. Little to no significant changes have been noted to occur on triglyceride levels or high density lipoprotein (HDL) cholesterol ("good" cholesterol) levels.

Beta-sitosterol is found in plant-based foods such as fruits, vegetables, soybeans, breads, peanuts and peanut products. It is also found in bourbon and oils. Many human and animal studies have found that supplementation of beta-sitosterol into the diet decreases total serum cholesterol as well as low-density lipoprotein cholesterol.

Niacin, also known as vitamin B3 or nicotinic acid, is a well-accepted treatment for high cholesterol. Multiple studies show that niacin (not niacinamide) has significant benefits on levels of high-density cholesterol. Niacin has been shown to produce better results than prescription drugs. There are also benefits on levels of low-density cholesterol, although these effects are less dramatic.

Omega-3 fatty acids are found in fish oil and certain plant/nut oils. Fish oil contains both docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Multiple human trials report small reductions in blood pressure with intake of omega-3 fatty acids. There is strong scientific evidence from human trials that omega-3 fatty acids from fish or fish oil supplements (EPA + DHA) significantly reduce blood triglyceride levels. Benefits appear to be dose-dependent. Fish oil supplements also appear to cause small improvements (increases) in high-density lipoprotein. However, increases (worsening) in low-density lipoprotein levels are also observed. The American Heart Association has published recommendations for EPA + DHA. Because of the risk of bleeding from omega-3 fatty acids, a qualified healthcare provider should be consulted prior to starting treatment with supplements.

Policosanol is a natural mixture of alcohols derived from plant-based waxes that has been shown to lower cholesterol. Policosanol has been used and recommended to treat high cholesterol (hypercholesterolemia). Numerous studies have analyzed the effects of policosanol on cholesterol levels and have found benefits. At this time, the evidence supporting the efficacy of this agent is compelling, although greater acceptance in the U.S. market may await additional larger studies.

Psyllium, also known as ispaghula, comes from the husks of the seeds of Plantago ovata. Psyllium is well studied as a lipid-lowering agent with generally modest reductions seen in blood levels of total cholesterol and low-density lipoprotein. Because only small reductions have been observed, people with high cholesterol should discuss the use of more potent agents with their healthcare providers. Effects have been observed in adults and children, although long-term safety in children is not established.

Red yeast rice (RYR) is the product of yeast (Monascus purpureus) grown on rice. Since the 1970s, human studies have reported that red yeast lowers blood levels of total cholesterol, low-density lipoprotein/LDL and triglyceride levels. Other products containing red yeast rice extract can still be purchased. However, these products may not be standardized and effects are unpredictable. For lowering cholesterol, there is better evidence for using prescription drugs such as lovastatin.

Soy is a subtropical plant native to southeastern Asia. Numerous human studies report that adding soy protein to the diet can moderately decrease blood levels of total cholesterol and low-density lipoprotein. Small reductions in triglycerides may also occur, while high-density lipoprotein does not seem to be significantly altered. It is unknown if products containing isolated soy isoflavones have the same effects as regular dietary intake of soy protein.

For more information on these therapies, please visit Natural Standard's Foods, Herbs & Supplements and Medical Conditions databases.

 

Paclitaxel from Yew for Breast Cancer

A new study suggests that paclitaxel, originally derived from the Pacific yew tree, may improve survival in women with breast cancer.

Taxanes are compounds produced by plants in the genus Taxus, such as the Pacific yew tree. Researchers from Eastern Cooperative Oncology Group in Philadelphia, PA, compared the efficacy of two different taxanes, docetaxel and paclitaxel, given either weekly or every three weeks, in the adjuvant treatment of breast cancer.

Paclitaxel is isolated from the bark of the Pacific yew tree (Taxus brevifolia) and is available under the brand name Taxol®. As early as 1971, paclitaxel was used as an anti-tumor drug in clinical trials run by the U.S. National Cancer Institute. Taxol® has succeeded in treating advanced ovarian and breast cancers in clinical trials.

Paclitaxel is now approved by the U.S. Food and Drug Administration (FDA) and is hailed as one of the most significant advances in cancer chemotherapy in recent history.

In the study, 4,950 women with axillary lymph node-positive or high-risk lymph node-negative breast cancer first received four cycles of intravenous doxorubicin and cyclophosphamide at three-week intervals and were then assigned to paclitaxel or docetaxel, given intravenously at either three-week intervals for four cycles, or at one-week intervals for 12 cycles. The primary end point was disease-free survival.

Compared to patients receiving the standard therapy of paclitaxel every three weeks, the odds ratio for disease-free survival was 1.27 among those receiving weekly paclitaxel, 1.23 among those receiving docetaxel every three weeks and 1.09 among those receiving weekly docetaxel.

As compared with standard therapy, the study found that weekly paclitaxel was associated with improved survival. In a subgroup of patients whose tumors expressed no human epidermal growth factor receptor type 2 protein, an exploratory analysis found similar improvements in disease-free and overall survival with weekly paclitaxel treatment regardless of hormone-receptor expression. Grade 2, 3 or 4 neuropathy (nerve pain) was more frequent with weekly paclitaxel than with paclitaxel every three weeks (27 percent vs. 20 percent).

The study authors concluded that weekly paclitaxel after standard adjuvant chemotherapy may improve disease-free and overall survival in women with breast cancer.

Susan G. Komen for the Cure® will be hosting its National Race for the Cure® 5K Walk/Run on Saturday, June 7, 2008 in Washington, DC, on the National Mall. For more information on this race, please click here. Komen has dedicated nearly $1 billion to creating awareness and finding a cure for breast cancer, making it the nation's largest private funding source for breast health and breast cancer.

For more information on yew, please visit Natural Standard's Foods, Herbs & Supplements database. For more information on breast cancer, please visit Natural Standard's Medical Conditions database.

Healthy Marriage

A new study supports the growing evidence that healthy marriages equal healthier men and women.

Researchers from Mayo Clinic, in Rochester, MN, investigated whether marital status and self-assessed mental health are independent risk factors for poor self-rated overall health among female primary care patients.

The cross-sectional survey of family medicine patients treated in a clinic in rural Minnesota included 723 women. Self-ratings of mental health, demographics and symptoms were used to predict self-rated overall health.

The study found that women who were single, divorced or otherwise not married or widowed had lower odds of good self-rated overall health compared with married women. Women who were 65 years of age and over, women who rated themselves as depressed and women who reported more physical symptoms also were less likely to have good health compared with younger women, women who did not feel depressed and women with fewer physical symptoms, respectively.

Education was not independently related to health in this sample. Worry was related to health in the univariate analysis but not after controlling for self-assessed depression.

The study authors concluded that in order to improve overall health among rural women seen in primary care settings, special attention may need to be directed at women who are single, are older, report more physical symptoms and feel depressed. They suggested that programs include self-help materials, support groups and counseling services addressing social isolation, employment and financial hardship.

This study comes during a time of marriage crisis in America; almost half of all marriages continue to end in divorce. However, couples who stay married report happier and healthier lives.

In an article for Discovery Health, David Popenoe, a professor of sociology at Rutgers University and co-director of the National Marriage Project, dispelled common myths about marriage. Popenoe asserted that recent research suggests that men and women benefit about equally from marriage, although in different ways. Both men and women live longer, happier, healthier and wealthier lives when they are married. Husbands typically gain greater health benefits, while wives gain greater financial advantages.

Other research found that couples with children have a slightly lower rate of divorce than childless couples. Popenoe found that the most common reasons couples give for their long-term marital success are commitment and companionship. He warned that many studies have found that those who live together before marriage have less satisfying marriages and a considerably higher chance of eventually breaking up. And, according to a large-scale national study, married people have both more and better sex than do their unmarried counterparts; they report enjoying it more, both physically and emotionally.

Another recent study of 17 developed nations found that married persons have a significantly higher level of happiness than persons who are not married after controlling for gender, age, education, children, church attendance, financial satisfaction and self-reported health. The authors asserted that "the strength of the association between being married and being happy is remarkably consistent across nations." Marriage boosted financial satisfaction and health; cohabitation, by contrast, did not increase financial satisfaction or perceived health and the boost to happiness from having a live-in lover was only about a quarter of that of being married, stated the researchers.

And finally, the U.S. Department of Health and Human Services: Administration for Children and Families found benefits for children, men, women and communities.

Children and youth who are raised by parents in healthy marriages, compared to unhealthy marriages, are: more likely to attend college, more likely to succeed academically, physically healthier, emotionally healthier, less likely to attempt or commit suicide, less likely to have behavioral problems in school, less likely to be a victim of physical or sexual abuse, less likely to abuse drugs or alcohol, less likely to commit delinquent behaviors, more likely to have a better relationship with their mothers and fathers, less likely to divorce when they get married, less likely to become pregnant as a teenager or impregnate someone, less likely to be sexually active as teenagers, less likely to contract STDs and less likely to be raised in poverty.

Women who are in healthy marriages are: more likely to have a more satisfying relationship, emotionally healthier, physically healthier, wealthier, less likely to be victims of domestic violence, sexual assault or other violent crimes, less likely to attempt or commit suicide, less likely to abuse drugs or alcohol, less likely to contract STDs, less likely to remain or end up in poverty and more likely to have better relationships with their children.

Men who are in healthy marriages, compared to unhealthy marriages, are: more likely to live longer, physically healthier, wealthier, more likely to have increased stability of employment, more likely to have higher wages, emotionally healthier, less likely to abuse drugs or alcohol, more likely to have better relationships with their children, more likely to have a satisfying sexual relationship, less likely to commit violent crimes, less likely to contract STDs and are less likely to attempt or commit suicide.

And lastly, communities with a higher percentage of couples in healthy marriages report the following: higher rates of physically healthy citizens, higher rates of emotionally healthy citizens, higher rates of educated citizens, lower domestic violence rates, lower crime statistics, lower teen age pregnancy rates, lower rates of juvenile delinquency, higher rates of home ownership, lower rates of migration, higher property values and decreased need for social services.

For more information, please visit Natural Standard's Medical Conditions database, specifically the Marital Distress Monograph.

 

Mindfulness and Cognitive-Behavioral Therapy for Stress

Mindfulness-based stress reduction may be more effective than cognitive-behavioral stress reduction, a new study reports.

Mindfulness is an approach in which attention is focused on a physical sensation (such as breath). When thoughts intrude, the individual returns to the focus. Attention is placed on the present moment, rather than on the future or past. This technique may involve a "body scan," in which one focuses on the body from head to feet, concentrating on areas of pain or illness. This is usually performed while lying down. Regular practice is suggested to enhance self-awareness.

Researchers from New Mexico investigated the effects of mindfulness-based stress reduction and cognitive-behavioral stress reduction in 50 subjects. Participants self-selected into mindfulness-based stress reduction (36 participants) or cognitive-behavioral stress reduction (14 participants) courses taught at different times. There were no initial differences between the mindfulness-based stress reduction and cognitive-behavioral stress reduction subjects among demographics, including age, gender, education and income.

Mindfulness-based stress reduction was an eight-week course using meditation, gentle yoga and body-scanning exercises to increase mindfulness. Cognitive-behavioral stress reduction was an eight-week course using cognitive and behavioral techniques to change thinking and reduce distress.

The researchers analyzed perceived stress, depression, psychological well-being, neuroticism, binge eating, energy, pain and mindfulness before and after each course. Weekly meetings for both courses were held in a large room on a university medical center campus.

The study found that mindfulness-based stress reduction subjects improved in all eight outcomes, with all of the differences being significant. Similarly, cognitive-behavioral stress reduction subjects improved in six of eight outcomes, with significant improvements on well-being, perceived stress and depression.

According to the researchers, mindfulness-based stress reduction subjects had better outcomes across all variables, when compared with the cognitive-behavioral stress reduction subjects; particularly, mindfulness-based stress reduction subjects had better outcomes with regard to mindfulness, energy, pain and a trend for binge eating.

The study authors concluded that while mindfulness-based stress reduction and cognitive-behavioral stress reduction may both be effective in reducing perceived stress and depression, mindfulness-based stress reduction may be more effective in increasing mindfulness and energy and reducing pain. The authors recommended that future studies examine the differential effects of cognitive behavioral and mindfulness-based interventions and attempt to explain the reasons for the differences.

For more information on these therapies, please visit Natural Standard's Foods, Herbs & Supplements and Health & Wellness databases.

Papaya and Immunity

A fermented papaya preparation may help boost immunity, a new study suggests.

Researchers from Japan explained that fermented papaya preparation from yeast fermentation of Carica papaya Linn. is a natural health food that is commercially sold in their country.

Previous research revealed that fermented papaya preparation has antioxidant activity. However, the effect of fermented papaya preparation on allergic diseases remains unclear.

The study investigated whether the oral administration of fermented papaya preparation to mice restrained two types of contact hypersensitivity models.

The study authors found that the oral administration of the fermented papaya preparation may have a therapeutic potential for the prevention of contact hypersensitive immuno-response.

Immune system disorders occur when the body's immune system does not function properly. The immune system is a complex network of cells, proteins, tissues and organs that work together to fight off harmful substances and disease-causing microorganisms called pathogens. A healthy immune system helps protect the body from disease and infection.

An immune system disorder can be classified as either an autoimmune disorder or an immune deficiency.

Autoimmune disorders occur when the immune system mistakes body cells for harmful invaders, such as bacteria, and attacks them. Autoimmune disorders can destroy body tissues, cause abnormal organ growth and/or impair organ function.

Immune deficiencies occur when an individual's ability to fight against an infectious disease is compromised or entirely absent. Patients who suffer from immune deficiencies experience recurrent infections, such as sinusitis and pneumonia. There are two main types of immune deficiencies: primary immune deficiencies and secondary immune deficiencies.

Primary immune deficiencies are disorders that occur because part of the body's immune system does not function properly. These disorders are caused by intrinsic or genetic defects in the immune system. Some primary immune deficiencies are inherited, which means they are passed down through family members. Individuals who have primary immune deficiencies are born with the disorders.

The World Health Organization (WHO) has identified nearly 100 primary immune deficiency diseases, including X-linked agammaglobulinemia (Bruton's Disease), common variable immune deficiency (CVID) and selective immunoglobulin A deficiency.

Secondary immune deficiencies are caused by factors outside of the body, such as chemotherapy treatment, radiation therapy, malnutrition, HIV infection and diabetes. In addition, diseases, such as leukemia and multiple myeloma, cause cancerous immune cells to infiltrate the bone marrow, which is responsible for producing immune system cells. Secondary immune deficiency also occurs among critically ill patients and the elderly.

Secondary immune deficiencies usually resolve once the underlying illness is treated or the outside factor is eliminated. For instance, immune deficiencies caused by chemotherapy or radiation therapy generally resolve once treatment is completed.

Papain is an enzyme found in papaya (Carica papaya) fruit latex. In standard western medical care, papain-containing debridement agents are commonly used to remove necrotic tissue and slough in burns, postoperative wounds, pilonidal cyst wounds, carbuncles, trauma wounds, infected wounds and chronic lesions, such as pressure ulcers, varicose veins and diabetic ulcers.

Papain is also used in some traditional medicine for wound healing, specifically in Africa for burn debridement and healing stimulation. A few clinical studies seem to support this use. In addition, there is some interest in the use of other papain-like enzymes for osteoporosis, arthritis, vascular diseases and cancer. However, there is currently little available research indicating that papain itself would be useful for these conditions.

For more information on papaya or immunity, please visit Natural Standard's Foods, Herbs & Supplements and Medical Conditions databases.

Oriental Herb for Ovarian Cancer

A compound isolated from a traditional oriental medicinal herb may be a useful adjuvant therapy for endometrial and ovarian cancers, a new study suggests.

Endometrial cancer, carcinoma of the lining of the uterus, is the most common gynecologic malignancy, comprising approximately 95 percent of all uterine cancers diagnosed. Approximately 40,000 American women receive a diagnosis of endometrial cancer each year, making it the fourth most common cancer found in women after breast cancer, lung cancer and colon cancer. Endometrial cancer is most prevalent after the reproductive years, between the ages of 60 and 70.

Ovarian cancer is a disease in which normal ovarian cells begin to grow in an uncontrolled, abnormal manner and produce tumors in one or both ovaries. According to the American Cancer Society, ovarian cancer ranks fifth in total cancer deaths among women. It is estimated that about 20,000 women in the United States will develop ovarian cancer every year. About 15,000 deaths from ovarian cancer will occur in American women during that same time frame.

Researchers from Oita University Faculty of Medicine in Oita, Japan, explained that beta-hydroxyisovalerylshikonin (beta-HIVS), a compound isolated from the traditional oriental medicinal herb Lithospermum radix, may kill cancer cells.

The study investigated the effect of beta-HIVS on three endometrial cancer cell lines, two ovarian cancer cell lines and normal human endometrial epithelial cells.

Endometrial and ovarian cancer cells were treated with various concentrations of beta-HIVS, and its effect on cell growth, cell cycle, cell death and related measurements was investigated.

The study found that all endometrial and ovarian cancer cell lines were sensitive to the growth-inhibitory effect of beta-HIVS, although normal endometrial epithelial (outer layer) cells were viable after treatment with the same doses of beta-HIVS that induced growth inhibition in endometrial and ovarian cancer cells.

The study authors concluded that the anticancer activity of beta-HIVS may occur with higher sensitivity of cancer cells compared with normal healthy cells, when using low concentration. This evidence suggests that beta-HIVS may become a useful adjuvant therapy for endometrial and ovarian cancers.

For more information on gynecological cancers, please visit Natural Standard's Medical Conditions database.

 

Curcumin and Diabetes

A new study suggests that curcumin, a yellow pigment of the spice turmeric, may lower blood sugar, and therefore, may help treat diabetes.

Turmeric has been used in Asian food preparation, medicine, cosmetics and fabric dying for more than 2,000 years. Marco Polo described turmeric in his memoirs, and the herb became popular in Europe during Medieval times for its coloring value and medicinal uses.

Traditionally, turmeric has been used to improve gastrointestinal upset, arthritis and overall body energy. As an ingredient in foods, turmeric provides a yellow tint, as well as flavoring to curry dishes. Turmeric also plays a role in some Indian religious ceremonies. It is produced most extensively in India, but it is also cultivated in other countries in Asia and Central America.

Curcumin is the main constituent extracted from the roots of turmeric. During the 1970s, research began to focus on the pharmacological properties of turmeric and curcumin, particularly regarding possible anti-inflammatory and antioxidant properties.

Researchers from Sunchon National University, Jeonnam, Republic of Korea, investigated the effect of curcumin on insulin resistance and glucose homeostasis in male mice and their age-matched lean non-diabetic mice. The mice were fed with or without curcumin for six weeks.

The study found that curcumin significantly lowered blood sugar levels and it suppressed body weight loss in diabetic mice.

The study authors concluded that curcumin seemed to be a potential glucose-lowering agent and antioxidant in type 2 diabetic mice, it but had no effect in non-diabetic mice.

Diabetes, also known as diabetes mellitus, is a chronic health condition where the body is unable to produce enough insulin and properly break down sugar (glucose) in the blood. Glucose comes from food and is used by the cells for energy. Glucose is also made in the liver. Insulin is a hormone produced by the pancreas, a large gland behind the stomach. Insulin is needed to move sugar into the cells where it can be used for energy needed for body processes.

Diabetes is associated with long-term complications that affect almost every part of the body. The disease often leads to blindness, heart and blood vessel disease, stroke, kidney failure, amputations and nerve damage. Uncontrolled diabetes can complicate pregnancy, and birth defects are more common in babies born to women with diabetes. Pregnant women can temporarily develop gestational diabetes, a type of diabetes that begins late in pregnancy.

In 2007, an estimated 20.8 million children and adults in the United States, or seven percent of the population, had diabetes. An estimated 14.6 million have been diagnosed with diabetes (both type 1 and type 2), while 6.2 million people (or nearly one-third) are unaware that they have type 2 diabetes.

Diabetes is widely recognized as one of the leading causes of death and disability in the United States. The U.S. Centers for Disease Control (CDC) recognize diabetes as the sixth leading cause of death in the United States, with over 72,000 deaths in 2004.

Saw Palmetto Safety

Saw palmetto appears to be safe in the treatment of enlarged prostates, a new study reports.

Researchers from Northern California Kaiser Permanente explained that saw palmetto is commonly used by men for lower-urinary tract symptoms. Despite its widespread use, very little is known about the potential toxicity of this dietary supplement.

The Saw palmetto for Treatment of Enlarged Prostates (STEP) study was performed among 225 men with moderate-to-severe symptoms of benign prostatic hyperplasia (enlarged prostate). Researchers compared a standardized extract of the saw palmetto berry (160 milligrams twice daily) with a placebo over a one-year period.

The researchers collected detailed data on serious and non-serious adverse events, sexual functioning and laboratory tests of blood and urine. Between-group differences were assessed with mixed-effects regression models.

The study found no significant differences between the saw palmetto and placebo-allocated participants in the risk of suffering at least one serious adverse event (5.4 percent vs. 9.7 percent, respectively) or non-serious symptomatic adverse event (34.8 percent vs. 30.1 percent).

The study also found few significant between-group differences in sexual functioning or for most laboratory analyses, with only small differences observed in changes over time in total bilirubin, potassium and the incidence of glycosuria or sugar in the urine (0 percent in the saw palmetto group vs. 3.7 percent in the placebo group).

The study authors concluded that after careful assessment, no evidence for serious toxicity of saw palmetto was observed. However, the authors recognized the small sample size and length of the study and suggested that the data do not rule out potential rare adverse effects associated with the use of saw palmetto.

Herbal Science International, Inc. Recalls 12 Dietary Herbal Supplements

Herbal Science International, Inc. is recalling 12 dietary supplements that contain ephedra, aristolochic acid or human placenta because they may present a serious health hazard to consumers.

The U.S. Food and Drug Administration (FDA) regards dietary supplements containing ephedra as potential health hazards because this botanical contains ephedrine alkaloids. Ephedrine alkaloids are adrenaline-like stimulants that can have potentially dangerous effects on the heart.

Recent studies have confirmed that ephedrine alkaloids raise blood pressure and otherwise stress the circulatory system, effects that are linked to adverse health effects like heart attacks and strokes. Based on this and other evidence in the scientific literature, the FDA issued a rule in February 2004 prohibiting the sale of dietary supplements containing ephedrine alkaloids because they present an unreasonable risk of illness or injury.

The company is recalling nine products that contain ephedra, a source of ephedrine alkaloids, as an ingredient sold labeled under the following brands: Wu Yao Shun Qi San, Qing Bi Tang (Nasal Cleanser), Zhong Fong Huo Luo Wan (Stroke Revito Formula), Xiao Qing Long Tang (Little Green Dragon), Ding Chuan Tang, Xiao Xu Ming Tang, Feng Shi Zhi Tong Wan (Joint Relief), Guo Min Bi Yan Wan and Fang Feng Tong Sheng San.

Herbal Science International, Inc. is also recalling Tou Tong San (Headache Formula) and Du Huo Ji Sheng Tang (Du Huo Joint Relief), two products containing aristolochic acid. Aristolochic acid is a potent carcinogen and nephrotoxin found in certain plants and botanicals. This chemical can cause serious kidney damage, and the use of products that contain aristolochic acid has been associated with several occurrences of kidney failure. These products have also been linked to an increased risk of kidney cancer in people who have consumed them.

Lastly, the company is recalling Seng Jong Tzu Tong Tan, a product that contains human placenta. Human placenta may transmit disease, and dietary supplements that contain it may not be lawfully marketed in the United States.

All of the 12 products under voluntary recall are packed in white plastic bottles of 100 capsules. All lots are covered in this recall action. These products have been sold nationwide in herbal stores, by acupuncturists and on the Internet.

Consumers who have purchased these products should immediately discontinue their use and return them to the place of purchase for a full refund. Consumers with questions may contact the company at 626.333.9998. Consumers who have been taking the products and have experienced adverse reactions should consult their healthcare professional.

Herbal Science International, Inc. apologized for any inconvenience and expressed its concerns for the health of consumers by conducting a voluntary recall action. Herbal Science International, Inc. promises to ensure quality and integrity of all its products and the company is working closely with the FDA in the recall process.