Navigation Links
The unsolved mystery of kava toxicity
Date:7/13/2011

A major new review of scientific knowledge on kava a plant used to make dietary supplements and a trendy drink with calming effects has left unsolved the mystery of why Pacific Island people can consume it safely, while people in the United States, Europe, and other Western cultures sometimes experience toxic effects. The article appears in ACS' journal Chemical Research in Toxicology.

Line Olsen and colleagues point out that for centuries, people of the Pacific Islands have safely consumed a beverage made from crushed kava roots. Kava'scalming effects made it popular in Western cultures in the 1990s, when people also began to use a herbal supplement for the treatment of anxiety, emotional stress and sleep problems. But in 2001, reports of liver damage among Westerners who took kava supplements gained widespread attention. Many Western countries, including the United States, the United Kingdom, and Canada, ban or regulate the sale of kava products. To determine why kava is toxic to some people but not to others, the researchers sifted through the scientific studies published on the topic.

Their review of 85 scientific studies on kava toxicity found no consensus on kava toxicity, despite several theories that have emerged over the years. Culprits include methods for preparing kava, the particular species of kava used, the possible toxicity of substances produced by the body when kava is digested and genetic differences among consumers. "To date, there remains no indisputable reason for the increased prevalence of kava-induced hepatotoxicity in Western countries," the researchers say.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related biology news :

1. Scripps Research scientists solve mystery of nerve disease genes
2. River mystery solved
3. Team solves decades-old molecular mystery linked to blood clotting
4. New genetic study helps to solve Darwins mystery about the ancient evolution of flowering plants
5. Bacterial genome may hold answers to mercury mystery
6. 44-year-old mystery of how fleas jump resolved
7. Stretching the truth: JILA biophysicists help unravel DNA stretching mystery
8. Rice physicists help unravel mystery of repetitive DNA segments
9. Mystery dissolves with calcium pump discovery
10. VIMS scientists help solve mystery of alien pod
11. A mystery solved: How genes are selectively silenced
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/22/2014)... a cost-effectiveness analysis of commercial diet programs and pills, ... the best value for the money. The Jenny Craig ... the most expensive option tested, according to researchers at ... The findings, published in the June issue of the ... health and weight-loss benefits per dollar spent as insurance ...
(Date:7/22/2014)... adapted to New York City,s human behaviour, allowing them ... their fellow squirrels in the woods. , Dr Bill ... Agriculture, led the study that proved eastern grey squirrels ... and prevent unnecessary responses when humans acted in a ... , "As we rapidly increase the spread of urbanisation ...
(Date:7/22/2014)... Open a child,s lunch box and you,re likely to find ... guidelines. Those are the findings of a study conducted by ... at Tufts University and in the Department of Public Health ... The findings are published online ahead of print in the ... , Led by senior author Jeanne Goldberg, Ph.D., R.D., ...
Breaking Biology News(10 mins):Study compares cost-effectiveness of weight-loss programs and drugs 2Study compares cost-effectiveness of weight-loss programs and drugs 3New York squirrels are nuts about city life 2Room for improvement in elementary school children's lunches and snacks from home 2
... that spots tooth decay almost as soon as it,s begun ... Patrick Walter in SCI,s Chemistry & Industry (C&I) ... phobias and puts thousands of people off visiting their dentist ... available in dental surgeries in five years from now, is ...
... the Institute for Research in Biomedicine (IRB Barcelona), in ... of the CSIC, reveal a mechanism that controls the ... adhesion. This same mechanism may be defective in diseases ... lose their adhesion to neighbouring cells and migrate through ...
... to Americans. From the comedic portrayal of "Mr. Limpet" ... fish can talk, laugh and tell jokes--at least on ... verbally communicate? Researchers say, "Yes," in a paper published ... Science . Further, the findings put human speech--and social ...
Cached Biology News:End in sight for the dreaded dentist drill 2Discovery of a mechanism that regulates cell movement 2
(Date:7/22/2014)... 2014 The Board of Directors of BD (Becton, ... a quarterly dividend of 54.5 cents per common share payable ... 9, 2014. The indicated annual dividend rate is $2.18 per ... a leading medical technology company that partners with customers and ... evolving health needs. Our innovative solutions are focused on improving ...
(Date:7/22/2014)...   BioTE Medical , a leading provider ... pellets, today announced the addition of Dr. ... Rouzier is joining the BioTE Medical Advisory Board ... Rouzier was residency trained in Family Medicine and ... certified emergency physician still practicing at a large ...
(Date:7/22/2014)... Chicago, IL (PRWEB) July 22, 2014 ... will a clear and concise visual representation of history, ... Mr. Novak was always regaled by family history stories ... historic location as the "old country." Pictures and 8mm ... and undiscovered side of the family, and Steve ordered ...
(Date:7/22/2014)... SHENZHEN , Cina, 22 luglio 2014 /PRNewswire/ ... filiale di BGI, la maggiore organizzazione di genomica del ... servizio di sequenziamento dell,intero esoma umano con base la ... Complete Genomics, molto apprezzata nel settore per essere ... il 99.999% di precisione e una rilevazione altamente sensibile ...
Breaking Biology Technology:Dr. Neal Rouzier Joins BioTE Medical 2Dr. Neal Rouzier Joins BioTE Medical 3DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 2DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 3DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 4BGI Tech lancia un servizio di sequenziamento dell'intero esoma umano sulla piattaforma avanzata di Complete Genomics 2
... The biggest fear for a doctor may be losing a patient, ... of a hospital, there are hundreds of supplies to keep track ... that often leaves doctors rooting around in the supply closet for ... hunt for a defibrillator. , ,According to Barry Chaiken, associate chief ...
... Alto, Calif. - Wisconsin Governor Jim Doyle ... the subject wasn't the controversial stem cell patent of the ... coalition building on stem cell research, Doyle went after his ... on federal funding for human embryonic stem cell research. , ...
... week's flurry of announcements from hard disk drive stalwart Seagate. After ... than 20 years - and disk storage is, as everyone knows, ... news that someone has packed another gigabyte of magnetic bits onto ... you didn't pay much attention to - or even see - ...
Cached Biology Technology:RFID system aids hospital in tracking assets 2RFID system aids hospital in tracking assets 3Doyle, Green exchange stem cell salvos 2Doyle, Green exchange stem cell salvos 3Doyle, Green exchange stem cell salvos 4Digital Media Superstar: Seagate? 2Digital Media Superstar: Seagate? 3
Application: for RNase- decontamination , Registered Trademark of Ambion. ,Special grade: for molecular biology Density: 1.00 g/mL (20 C) Suitab tst: RNase decontamination in accordance...
... A cleaning agent for removing ... countertops, and pipettors. It ... RNase contamination from microcentrifuge tubes ... ,RNase Zap (R) ...
Mol wt: average mol wt12,360.96 Da by calculation...
... a series of media originally developed at the ... for the large scale propagation of cells from ... used for the growth and maintenance of cell ... viruses in these cell lines. One of the ...
Biology Products: