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A man who overdosed on Vitamin D lost 28 pounds within three months and was hospitalized for eight days. 

An unnamed man in the UK hospitalized due to a vitamin D overdose 

The unnamed middle-aged guy, as part of a regime prescribed by a private dietitian in the UK, received well over 20 more supplements besides the necessary daily amount of vitamin D, based on a case report published in BMJ Case Reports.

After consuming the supplements for a month, the man began to experience stomach pain, nausea, muscle spasms, ringing in the ears, parched lips, extreme thirst, and diarrhea. Although he stopped using them, his issues persisted.

A blood test revealed that the guy’s vitamin D concentrations were seven times the upper limit and that his calcium levels also were alarmingly high since vitamin D helps regulate the body’s calcium concentrations. The test results also indicated that there was a chance of renal damage. Calcium uptake is aided by vitamin D, but excessive amounts of it can lead to “excessive absorption” and “excessively high” levels of blood calcium((hypercalcemia), claims Healthline. This could lead to other “potentially dangerous symptoms.”

The guy’s tests, for instance, revealed that he suffered from “acute renal damage.” Along with other symptoms, including hallucination and cardiac irregularities, hypercalcemia also results in kidney problems.

Hypervitaminosis D is a result of inadequate supplementation. 

People naturally acquire the nutrient vitamin D from their food or frequent sun exposure. On the contrary, vitamin D toxicity, also known as hypervitaminosis D, is almost invariably a result of inadequate supplementation. The frequency of its occurrence is unknown. Nevertheless, over 25,000 cases of vitamin D poisoning were documented between 2000 and 2014, according to a 2016 analysis of US Poison Control Data.

Most reports of illness were mild or moderate, and there were no corresponding fatalities. The authors of the current investigation did, however, see a trend in which interactions seemed to get more frequent over time.

Supplements may be beneficial for some people, such as those with obvious nutritional deficits or expecting women who need more folic acid.