Elderly people should be careful about taking vitamin A

　　Researchers tested 562 elderly people over 60 years old and found that more than half of them took large amounts of vitamin A. In the blood of some elderly people who took large amounts of vitamins for a long time, the substance that causes high blood pressure - vitamin A aldehyde ester was found. Free vitamin A aldehyde in the blood is a harmful substance that can damage the liver and kidneys as it circulates in the blood, causing pain in bones and joints and some other skin disease , can also cause severe headaches.

　　Therefore, scientific researchers believe that people over 60 years old should not take large amounts of vitamin A. Some doctors in Western countries once advocated taking large amounts of vitamins to extend the life of cells, but the results ended in failure. Research shows that it is necessary for the elderly to take some vitamins regularly, but it should not be excessive and cannot be taken every day. The best way to supplement vitamins is to eat more fruits and vegetables regularly.