*Keeping a form of arthritis called osteoarthritis from getting worse. But taking beta-carotene doesn’t seem to prevent osteoarthritis.
*Preventing bronchitis and difficulty breathing in smokers. Beta-carotene from the diet seems to help, but beta-carotene supplements do not.
*Reducing the risk of ovarian cancer in women after menopause.*Reducing the risk of pregnancy-related death, night blindness, and diarrhea and fever after delivery in underfed women.
*Preventing asthma attacks triggered by exercise.
*Treating a tongue disease called oral leukoplakia.