Noni juice: many uses, a few cautions

People in the South Pacific islands have found ways to use every part of the native morinda plant. The bushy evergreen’s roots and bark have been used to make dyes and fibers for textiles; the plant’s leaves have been tied around joints to relieve aches and pains; and the bitter and potent-smelling noni juice, extracted from the plant’s over-ripe fruits, has been taken for conditions as varied as asthma and upset stomachs.

*

Uses: Today, noni juice is sold as a purported remedy for cancer, arthritis and hypertension.

Dose: Recommended doses range from 1 to 10 ounces a day. Dried noni extracts are also available.

Precautions: Noni juice is high in sugar, so the supplement is not recommended for people with diabetes. Because it’s extremely high in potassium, large doses can lead to hyperkalemia, a condition marked by changes in heart rate.

Research: In animal and laboratory studies, noni juice has boosted immune cell activity and demonstrated the ability to destroy cancer cells. The juice also displays strong antioxidant effects in the lab. So far, however, no large human studies have been completed.

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