The Big Vitamin D Mistake

“The role of vitamin D in innate and adaptive immunity is critical. A
statistical error in the estimation of the recommended dietary allowance (RDA) for vitamin D was recently discovered…Since all-disease mortality is reduced to 1.0 with serum vitamin D levels ≥100 nmol/L, we call public health authorities to consider designating as the RDA at least three-fourths of the levels proposed by the Endocrine Society Expert Committee as safe upper tolerable daily intake doses. This could lead to a recommendation of 1000 IU for children <1 year on enriched formula and 1500 IU for breastfed children older than 6 months, 3000 IU for children >1 year of age, and around 8000 IU for young adults and thereafter. Actions are urgently needed to protect the global population from vitamin D deficiency.”

—Papadimitriou DT. “The Big Vitamin D Mistake.” J Prev Med Public Health. 2017.

More time indoors also suggests a need for vitamin D supplementation.

How Not To Die

“The vast majority of premature deaths can be prevented through simple changes in diet and lifestyle. In How Not to Die, Dr. Michael Greger, the internationally-recognized lecturer, physician,
and founder of NutritionFacts.org, examines the fifteen top causes of
death in America—heart disease, various cancers, diabetes, Parkinson’s,
high blood pressure, and more—and explains how nutritional and lifestyle
interventions can sometimes trump prescription pills and other
pharmaceutical and surgical approaches, freeing us to live healthier
lives.”

https://nutritionfacts.org/book/

Found the app Daily Dozen on F-Droid. The list of things to eat is in line with most nutrition information you hear, but the book looks worth a look.