Over-supplementation can lead to a buildup called hypervitaminosis , as the body cannot easily flush them out. đŸ„— The "Big Four" Vitamins Fat-soluble vitamins: Types, function, and sources

They require dietary fat to be absorbed into the bloodstream via the small intestine.

The body "tucks them away" in the liver and adipose (fat) tissue for future use.

Because they are stored, deficiencies take longer to develop compared to water-soluble vitamins.