> 23. (~This is not medical advice~). Don’t waste money on multivitamins, they don’t work. Vitamin D supplementation does seem to work, which is important because deficiency is common.
From The Physicians’ Health Study II - PHS II (https://www.acc.org/latest-in-cardiology/clinical-trials/201...):
"The results of the PHS II trial in middle-aged to elderly male physicians demonstrate that daily intake of a multivitamin results in a small, but statistically significant decrease in all cancers over 11 years of follow-up, especially nonprostate cancer, with numerically lower cancer-related mortality."
It is usually unwise for anyone to take any sort of medical advice from postings on the internet. This includes advice that claims it is not really advice. What you put into your body is your own personal decision, and if you want to better understand the implications, discuss it with a qualified medical professional.