Whether cancer, corona or colds: Vitamin D has long been considered a miracle weapon against all kinds of diseases. There is no scientific basis for the hype; high-dose pills can even be dangerous. Should we avoid supplementation, even in winter? The star-Fact check.
Vitamin D is omnipresent: influencers and dietary supplement manufacturers promote the substance as a lifestyle and miracle cure. According to some advertising, there seems to be hardly a disease that vitamin D cannot protect against or cure. Many of these promises are not scientifically proven – and with some vitamin pills and drops it is easy to overdose and, in the worst case, poisoning. The most important questions and answers: