I am a Fibromyalgia sufferer. Vitamin D can reduce inflammation, pain, and has many other health benefits!
Vitamin D helps boost the immune system and that can help you combat sickness, such as the flu, this season.
**Optimum levels are 50-80ng/mL year round. Since my lab says 30ng/mL is normal, please be aware that your supplement may not be enough. 5,000 IU/day is a normal, adult recommended daily dose.
Please read the full article which is linked below.
Dr. TenPenny's article on Vitamin D.