Final answer:
Excessive intake or synthesis of vitamin D can lead to a buildup of calcium in the body, potentially causing various health issues.
Step-by-step explanation:
Too much vitamin D can cause a buildup of calcium in the body. Vitamin D is a fat-soluble vitamin essential for the normal absorption of calcium and phosphorous, which are required for healthy bones. When there is too much vitamin D in the body, a condition known as hypervitaminosis D can occur, leading to elevated levels of calcium. This can lead to a variety of health issues, including nausea, vomiting, headache, and more severe complications such as kidney damage and abnormal heart rhythms.
Vitamin D is synthesized in the skin when exposed to UV radiation and can be ingested from foods like fatty fish or fortified milk or cereal. While deficiency in vitamin D can lead to conditions like rickets or osteomalacia, overconsumption or overproduction of vitamin D can lead to harmful health impacts due to calcium accumulation.