I’m not a doctor, but I think 2000 IU is a pretty low dose. I take at least twice that much, and it has really turned a lot of health problems around.
It’s especially important to take Vitamin D3 in the winter, if you don’t get much sun. And in the summer, too, if you use a lot of sunscreen and avoid tanning.
Just my opinion. I’m not a doctor. But my doctor was converted to Vitamin D after I sent him a few articles on it.
“It’s especially important to take Vitamin D3 in the winter, if you don’t get much sun.”
Everyone who lives above of 33* N Latitude (which is Los Angeles, CA) does not get enough sunlight to make sufficient vitamin D. Here in N. Idaho I advise my patients to take a minimum of 2000iu every day.