Final answer:
Older adults are more vulnerable to toxicity of Vitamin A because it is a fat-soluble vitamin that can accumulate in body fat and build up to unhealthy levels in the cells.
Step-by-step explanation:
Older adults are more vulnerable to toxicity of Vitamin A.
Vitamins are either fat-soluble or water-soluble. Now, fat-soluble vitamins are absorbed through the intestinal tract with lipids in chylomicrons and can accumulate in the body. If excess vitamins are retained in the lipid stores in the body, hypervitaminosis can result. Vitamin A is a fat-soluble vitamin that can accumulate in body fat and build up to unhealthy levels in your cells, making older adults more vulnerable to its toxicity.