Lycium may repress some cancer cells

Tibetan and Chinese legends tell of people who lived century-long lives while retaining the strength and beauty of youth -- thanks to lycium. The sweet, red berries of the Lycium barbarum tree are rich in beta carotene, B vitamins, vitamin C and several essential minerals. Lycium -- sometimes called matrimony vine, wolfberry, boxthorn and goji -- is native to Asia.

Uses: Traditional Chinese herbalists recommend lycium to promote liver and kidney health, improve vision and stamina, boost immunity and fertility, combat disease and increase life span. It’s also used to prevent morning sickness during pregnancy.

Dose: In traditional Chinese medicine, lycium is most often taken in combination with other herbs, such as schizandra or fennel. The berries can be eaten raw (fresh or dried), or made into a tea. Herbalists recommend half a cup of tea per day, made from about 10 grams of fruit.

Precautions: Some evidence suggests lycium may amplify the effects of blood-thinning drugs, such as warfarin.

Research: Much of the research on lycium’s health-promoting properties has been done in China, where lycium has demonstrated anti-cancer and antioxidant activity in scores of lab and animal studies. In vitro, the berry has inhibited the growth of leukemia and liver and skin cancer cells. It’s also diminished some signs of aging in mice. One clinical trial has shown that lycium may be helpful in treating certain cancers, but much more human research is needed to verify its efficacy.

Dietary supplement makers are not required by the U.S. government to demonstrate that their products are safe or effective. Ask your healthcare provider for advice on selecting a brand.

-- Elena Conis