For me the most important thing to consider is that we all should be informed consumers of our health care. The information we get from random sites on the internet, or friends or talk shows, is not to be considered as verified research--but--that also applies WAY too often to our own physicians, with their diplomas proving years and years of education and vetting.
I had complained of pain in my feet and ankles. Spent my own money on orthotics that further hurt, sent to specialists, fitted for hard boots that caused me to scream when I stood up, sent to cat scans. I knew the internet had just what seemed like it could help me, but I was told that wasn't a factor, because I was taking D2 with calcium and mag daily, as well as going out for walks in unprotected sunlight. I DEMANDED my D be checked (I thought it was routine, why they said it wasn't a factor) I came out at 11, with 30 as the baseline. Taking the initial mega doses and daily d allowed me to walk without my ankles binding in pain. A year later of taking daily 2000 iu I was only at 30, so increased to 5000 daily. Even better.
I had bleeding after not having a period for about a year. I was sent for a pap and a vaginal ultrasound. It was a difficult expensive, invasive, and time taking procedure. I was fine. I then got a blood test that showed - hey, I was never fully in menopause after all! I didn't even need that test. My friend was given a biopsy for the same reason, she's also fine. Kind of extreme when simpler tests could have determined the reason for the symptoms, don't you think?
Doctors advice needs to be monitored, and questioned, as closely as anything else. Since my beloved doctor retired about 20 years ago I still haven't found one I feel is worthy of being my primary. I think I've seen 6 different ones. It's easier to find a dependable car mechanic!
Just think of how little they know of nutrition, when food is often the first defense against getting sick!