Final answer:
Consuming excessive amounts of fat-soluble vitamins (A, D, E, K) can lead to toxicity due to their accumulation in the body's fat stores.
Step-by-step explanation:
An excessive consumption of fat-soluble vitamins can lead to toxicity. Unlike water-soluble vitamins, which are excreted through urine when consumed in excess, fat-soluble vitamins A, D, E, and K can accumulate in the body's lipid stores, leading to hypervitaminosis. With fat-soluble vitamins being stored in body fat, they can reach toxic levels if excessively consumed, primarily through supplementation, resulting in adverse health effects such as liver toxicity from too much vitamin A or other symptoms associated with hypervitaminosis.