Question

Who discovered Vitamin A??​

Answer 1

Elmer Vernon McCollum was the first to discover vitamin A.

Explanation:

• Vitamin A1 (retinol) is a vitamin of the vitamin A family that can be found in food and taken as a dietary supplement.
• Gowland Hopkins fed casein, fat, sugar, starch, and minerals to young rats. Milk was also given to half of the rats on a daily basis. Those who received the milk thrived, and after two weeks, the milk recipients were exchanged. He discovered that those who were given milk grew normally, whereas those who were not given milk did not develop as well. He justified this by claiming that the standard food was deficient in a vital organic nutrient and that comparable issues could be present in human disorders linked to diet.
• Elmer McCollum discovered that after 10 weeks on a purified diet, rats began to lose weight, but recovered if fed butterfat but not olive oil. Vitamins A and B were developed from these fat-soluble components.