What is the consequence of vitamin A overdose?

Vitamin A overdose, also known as hypervitaminosis A, can lead to a range of symptoms, with toxicity manifesting as nausea and headaches being particularly common. This occurs because vitamin A is a fat-soluble vitamin, meaning that it can accumulate in the body's tissues if taken in excessive amounts, leading to toxicity.

When the body has too much vitamin A, it often struggles to process and eliminate the excess, resulting in various symptoms indicative of toxicity. Nausea and headaches are classic manifestations, as they can arise from the body's response to the high levels of vitamin A and its effects on the central nervous system as well as gastrointestinal tract.

Other serious consequences of vitamin A overdose can include dizziness, blurred vision, and in severe cases, liver damage and increased intracranial pressure. Therefore, it is crucial to adhere to recommended dietary allowances when consuming vitamin A, especially from supplements.