excellent post.

• Vitamin D is a big one. most people need to be above 30 ng/ml. studies show that 60 ng/ml can reduce chance of cancer by 83%

http://www.forever29nutrition.com/lower-cancer-risk-83/

• another that's huge is testosterone for men. one of my friends wrote the book on how the healthy range of testosterone in men has declined 30% in 30 years which leads to all kinds of health problems: http://amzn.to/2nOdDFr

• gut health is also pretty huge. Dr. Purlmutter goes into how gut bacteria is responsible for so much more than we realize and the types of bacteria we're feeding with westernized diets is leading to diabetes and neurological disorders which is being referred to as type 3 diabetes: http://amzn.to/2shxGQZ

keep up the great content!