The signs have been on the wall all the time, but there never have been any large credible studies or trials to prove this, while everyone (and all the money) was focussed on the vaccines and only the vaccines.<p>Encouraging testing and supplementation of vitamin D in an early phase on top of getting vaccinated could have potentially saved many lifes. Especially for those who cannot be vaccinated.<p>Instead every time that someone suggested vitamin D for Covid, the media did their best to discredit that as potential misinformation, because <i>not engough data</i> and <i>enough vitamin through healthy diet and outside activity</i>. So instead of encouraging people to optimize their vitamin D, they even discouraged vitamin D, even when it has been known for years that there is an epidemic of vitamin D deficiency.<p>Similarly there is an epidemic of magnesium deficiency, but not as severe as the low vitamin D epidemic.