Although NHS suggests that adults and children over the age of one should have a ridiculously tiny dose of only 10mcg (400IU) of vitamin D every day, experts and research repeatedly confirm much higher daily doses are needed to prevent various health problems, and it looks like often mega-doses are required to reverse problems associated with vitamin D deficiency.

A new study published in the Journal of Investigative Dermatology shows that just one very high dose of 200,000 IU of vitamin D3 ingested one hour after sunburn was able to noticeably decrease skin damage, redness, swelling, and inflammation. Lower doses of the same vitamin didn’t make a difference. Read more