Researchers at the Boston University School of Medicine have found that individuals over 60 have a limited capacity for vitamin A intake. Taking large amounts of vitamin A can damage the liver and lead to other health problems.
The researchers tested 562 people over the age of 60 and found that more than half of them were taking excessive amounts of vitamin A. In the blood of some elderly individuals who had taken high doses of vitamin A for a long time, a substance that causes high blood pressure—vitamin A aldehyde ester—was discovered. Free vitamin A aldehyde ester in the blood is a harmful substance that can damage the liver and kidneys as it circulates. It can also cause pain in the stomach joints, certain skin diseases, and severe headaches.
Therefore, researchers believe that older adults should avoid taking large amounts of vitamin A. Some doctors in Western countries had previously advocated for large doses of vitamins to extend cell lifespan, but these efforts ultimately failed. Studies indicate that while it is necessary for the elderly to take certain vitamins regularly, they should not be taken in excess or on a daily basis. The best way to supplement vitamins is to consume more fruits and vegetables frequently.