How does excessive vitamin A intake affect the body?

Excessive vitamin A intake can lead to liver damage because vitamin A is a fat-soluble vitamin that is stored in the liver. When consumed in excessive amounts, it can accumulate to toxic levels. This toxicity can cause a range of liver-related issues, including liver enlargement (hepatomegaly) and can impair liver function. The liver is pivotal in metabolism and detoxification, so any damage to it can have widespread effects on the body's overall health.

In contrast, while vitamin A is important for immune function and eye health, excessive amounts do not enhance these functions and can actually lead to health problems instead. Saying it supports eye health only overlooks the broader implications of vitamin A toxicity and its potential detrimental effects. Furthermore, the notion that it has no known effects is incorrect, as the repercussions of high levels of vitamin A intake are well-documented. Thus, understanding the risks associated with excessive intake is crucial for maintaining optimal health.