Vitamin D helps your body absorb the calcium and phosphorus necessary for strong bones. This vitamin is also important for blood pressure control, immunity, and a healthy brain. Vitamin D is known as the “sunshine vitamin” since your body is able to manufacture this nutrient from sunlight. Food sources of vitamin D are eggs, fish and fortified cereals and dairy products. Many people turn to vitamin D supplements to increase their daily supply of vitamin D. While this can be beneficial, excess vitamin D can lead to dangerous side effect and medical conditions. The following are eight scary side effects of vitamin D toxicity as well as information on safely getting the vitamin D you need.
Megadoses of vitamin D can, in turn, cause an increase in calcium levels in the blood, known as hypercalcemia. Vitamin D increases the absorption of calcium in the intestine. Therefore, too much vitamin D can lead to excessive calcium absorption. Symptoms of hypercalcemia can include many body systems. Extreme thirst and frequent trips to the bathroom can indicate your kidneys are working overtime to clear calcium from your body. Bone pain can indicate bone loss, as extra calcium is removed to meet the demands created by excessive vitamin D. Grogginess and confusion may be signs of the effect hypercalcemia has on your brain.
9. Kidney Damage
Your kidneys play an important part in helping your body use the vitamin D you obtain from sunlight, food, or supplements. The kidneys convert this vitamin into the activated form of vitamin D necessary for bone growth and other functions. Excessive amounts of vitamin D can overwhelm the kidneys. Additionally, high doses of vitamin D can cause extra calcium to build up in the kidneys as kidney stones. Symptoms of kidney stones include severe pain in the side, back, lower abdomen, and pelvic area. Painful urination, bloody or bad-smelling urine, and vomiting are additional symptoms.