What is a consequence of excessive vitamin A intake?

Excessive intake of vitamin A can indeed lead to toxicity, which manifests in various adverse health symptoms. The body requires vitamin A for several vital functions, including vision, immune system performance, and skin health; however, when consumed in amounts significantly higher than the recommended dietary allowances, it can result in hypervitaminosis A.

Symptoms of this toxicity may include nausea, headaches, and dizziness, reflecting the body's distress due to the overload of this nutrient. Prolonged excessive consumption can lead to severe issues such as liver damage, as the liver plays a central role in metabolizing vitamins and managing their levels in the body.

In contrast, other choices suggest outcomes that either imply beneficial effects or indicate a lack of any health consequences from excess intake, which misrepresents the known risks associated with vitamin A. Therefore, understanding the balance and recommended limits for vitamin intake is crucial for maintaining overall health and avoiding adverse effects from excessive supplementation.