Beta-carotene

This summary compiles observational human evidence linking higher beta-carotene status with lower cataract risk, lower cancer risk in some analyses, and lower all-cause mortality. It is more useful as a map of the literature than as primary evidence.

This evidence summary reports that randomized trials do not support beta-carotene supplements for preventing cardiovascular disease or cancer in general populations. It also notes increased lung cancer risk in smokers and former asbestos workers, with mixed findings for cataracts.

This review summarizes human intervention studies showing moderate UV-protective effects of beta-carotene on skin and notes that evidence for benefit in normal skin remains limited. It also emphasizes that beta-carotene's primary established role in humans is as a provitamin A source.

This consumer summary notes that beta-carotene is an antioxidant linked with potential brain, skin, lung, and eye benefits, while also emphasizing that food sources are generally preferable to supplements.

In healthy men, beta-carotene supplementation increased facial yellowness and improved perceived attractiveness and health ratings. It did not improve measured oxidative stress, innate immune function, or semen quality.

This review summarizes human intervention studies showing moderate UV-protective effects of beta-carotene on skin and notes that evidence for benefit in normal skin remains limited. It also emphasizes that beta-carotene's primary established role in humans is as a provitamin A source.

In healthy men, beta-carotene supplementation increased facial yellowness and improved perceived attractiveness and health ratings. It did not improve measured oxidative stress, innate immune function, or semen quality.

This review summarizes human intervention studies showing moderate UV-protective effects of beta-carotene on skin and notes that evidence for benefit in normal skin remains limited. It also emphasizes that beta-carotene's primary established role in humans is as a provitamin A source.

This review summarizes human intervention studies showing moderate UV-protective effects of beta-carotene on skin and notes that evidence for benefit in normal skin remains limited. It also emphasizes that beta-carotene's primary established role in humans is as a provitamin A source.

This evidence summary reports that randomized trials do not support beta-carotene supplements for preventing cardiovascular disease or cancer in general populations. It also notes increased lung cancer risk in smokers and former asbestos workers, with mixed findings for cataracts.

This summary compiles observational human evidence linking higher beta-carotene status with lower cataract risk, lower cancer risk in some analyses, and lower all-cause mortality. It is more useful as a map of the literature than as primary evidence.

This summary compiles observational human evidence linking higher beta-carotene status with lower cataract risk, lower cancer risk in some analyses, and lower all-cause mortality. It is more useful as a map of the literature than as primary evidence.

In healthy men, beta-carotene supplementation increased facial yellowness and improved perceived attractiveness and health ratings. It did not improve measured oxidative stress, innate immune function, or semen quality.

This clinical summary describes common supplemental doses and reports adverse effects such as yellowing of the skin, with rare diarrhea, dizziness, joint pain, and unusual bleeding or bruising. It also warns against high-dose long-term use in smokers or those with asbestos exposure because of lung cancer risk.

This clinical summary describes common supplemental doses and reports adverse effects such as yellowing of the skin, with rare diarrhea, dizziness, joint pain, and unusual bleeding or bruising. It also warns against high-dose long-term use in smokers or those with asbestos exposure because of lung cancer risk.

This clinical summary describes common supplemental doses and reports adverse effects such as yellowing of the skin, with rare diarrhea, dizziness, joint pain, and unusual bleeding or bruising. It also warns against high-dose long-term use in smokers or those with asbestos exposure because of lung cancer risk.

This clinical summary describes common supplemental doses and reports adverse effects such as yellowing of the skin, with rare diarrhea, dizziness, joint pain, and unusual bleeding or bruising. It also warns against high-dose long-term use in smokers or those with asbestos exposure because of lung cancer risk.

This clinical summary describes common supplemental doses and reports adverse effects such as yellowing of the skin, with rare diarrhea, dizziness, joint pain, and unusual bleeding or bruising. It also warns against high-dose long-term use in smokers or those with asbestos exposure because of lung cancer risk.