Ideally, a person should get beta-carotene, which is converted into vitamin A in the body, from the daily diet (there is beta-carotene in yellow and orange fruits and vegetables). But some people prefer to substitute additives for this substance.
At the same time, scientists warn that taking such supplements is dangerous: scientific works prove that beta-carotene increases the risk of developing stomach and lung cancer. Other research suggests that beta-carotene supplementation increases the likelihood of cancer in people who smoke or are heavily exposed to asbestos at work.