Can Vitamin D supplements be dangerous or have side effects? As it turns out, there is too much of a good thing since some studies show benefits to certain demographics but others studies claim that consumers should beware.
In a related report by The Inquisitr, a steady intake of Vitamin D supplements may help your bones during the winter, but other studies claim Vitamin D supplements are useless:
“The effect estimate for vitamin D supplementation with or without calcium for myocardial infarction or ischaemic heart disease (nine trials, 48 647 patients), stroke or cerebrovascular disease (eight trials 46 431 patients), cancer (seven trials, 48 167 patients), and total fracture (22 trials, 76 497 patients) lay within the futility boundary, indicating that vitamin D supplementation does not alter the relative risk of any of these endpoints by 15% or more.”
But doctors still do recommend Vitamin D supplements for elderly women, patients with kidney disease, post-menopausal women, and very obese people. Doctor Muhammad Amer, who led another study, says otherwise healthy people might want to avoid Vitamin D supplements:
“Healthy people have been popping these pills, but they should not continue taking vitamin D supplements unchecked. At a certain point, more vitamin D no longer confers any survival benefit, so taking these expensive supplements is at best a waste of money.”
The dosage is said to be the critical part. If the vitamin D levels in the blood are above 21 nanograms per milliliter, it’s possible for healthy people to develop a “hardening of blood vessels and a greater risk of developing cardiovascular problems.” For a normal adult, the daily requirement is claimed to be 600 to 800 IU, but most Vitamin D products provide about 1,000 IU while others provide a much higher dosage. So if you are taking a Vitamin D supplement that has 2,000 IU to 4,000 IU, you may be unwittingly causing yourself harm without knowing it.
Lastly, there are different types of Vitamin D supplements. There is Ergocalciferol, or vitamin D2, and Cholecalciferol, or vitamin D3. A controlled test allegedly proved that there was a “six percent relative risk reduction among those who used vitamin D3, but a two percent relative risk increase among those who used D2.” So if you take Vitamin D supplements orally then try and make sure they are the D3 variant. Just be aware about dosage limits since “D3 is approximately 87 percent more potent in raising and maintaining vitamin D concentrations and produces 2- to 3-fold greater storage of vitamin D than does D2.”