I think so. I've been taking at least 10,000 IU a day for about a year and a half now along with 100 mcg K2.
I've been taking some Vitamin D3 since 2006...I was at 50,000 IU a day once on a doctors prescription.
I'm 73 years old and just got good blood-work results. The doctor said, "you're a healthy 73."(Okay, 73 next month)
I was diagnosed with type-2 diabetes this year although I've never had an A1C higher than 6.7. My latest A1C is 6.0 with 500mg Metformin 2x day.
At the risk of being labelled a conspiracy theorist, I would not be at all surprised if Big Pharma was behind the rise in Type II Diabetes.
Yes, and if you have anything chronic, even cancer, you need to make sure your levels are closer to 90 in the blood tests. I had that H1N1 flu some years ago, had double pneumonia by day 3. After I survived that, the sickest I ever was in my life, I starting supplementing. I’ve been under a lot of stress so I have had some days being sick recently but in the first 4-5 years I never got sick once no matter what I was exposed to.