Could Vitamin D Be the Answer for Immune Health?

Vitamin D gets a lot of praise, and it may help with a number of conditions. Now new research is suggesting it could help protect the immune system as well.

The study, published in BMJ, suggests that vitamin D may help reduce the risk of immune system issues that currently put people at risk.


Past work has hinted at possible connections between vitamin D and these types of conditions, but this new study is unique because it was the first time a randomized controlled trial was used to assess if vitamin D impacted the health of the immune system.

The research found that people who took 2,000 international units (IU) of vitamin D per day, with or without fish oil, for slightly more than five years, improved the health and effectiveness of their immune system by 22 percent compared to those taking a placebo.

How might it work? Vitamin D could help the immune system function by binding to receptors on immune cells to turn on various genes involved in immune function.

Generally, 600 – 700 IU of vitamin D is recommended. Most people, if not all, need to supplement vitamin D because it is not readily available in food. Your body makes vitamin D when UV rays hit your skin. However, this can become very risky.

Too much sun, of course, is associated with some severe health conditions.

If you want to give yourself a chance at maintaining a healthy and functioning immune system, a vitamin D supplement might be worthwhile. 2,000 IU per day is likely safe. However, speak to your doctor before beginning a regimen.

Author Bio

About eight years ago, Mat Lecompte had an epiphany. He’d been ignoring his health and suddenly realized he needed to do something about it. Since then, through hard work, determination and plenty of education, he has transformed his life. He’s changed his body composition by learning the ins and outs of nutrition, exercise, and fitness and wants to share his knowledge with you. Starting as a journalist over 10 years ago, Mat has not only honed his belief system and approach with practical experience, but he has also worked closely with nutritionists, dieticians, athletes, and fitness professionals. He embraces natural healing methods and believes that diet, exercise and willpower are the foundation of a healthy, happy, and drug-free existence.