Vitamin D is the most popular supplement, and was in the first commercial supplement – cod liver oil
The History of Supplements and the Rise of Heal-n-Soothe GazetteDay
See also VitaminDWiki
Vitamin D was the most supplemented vitamin or mineral in the US - 2017
The only supplement NASA gives crews is vitamin D - Sept 2015
Vitamin D – millions of years more ancient than Calcium – Jan 2016
More sunshine: more teeth (1862), fewer cavities (1934) – Oct 2011
Vitamin D history back to Egyptians and fortification - Aug 2011
- Comment on cod-liver oil: “Contrary to common belief, cod's liver is not the richest natural source of vitamin D. That of halibut is richer and those of sea bass, swordfish and yellow-fin tuna are intensely more concentrated sources. Striped tuna liver may be a thousand times more concentrated in vitamin D than cod.”
Teeth getting worse due to lower level of vitamin D during the past 5,000 years
History of Vitamin D from 500 million years ago to orthopaedic practice today – 2019