Vitamin D is known as the “Sunshine Vitamin” because we get it from the suns UVB rays. D3 is not a vitamin; it’s more like a hormone similar to estrogen and testosterone. Multiple peer reviewed studies have more recently shown that having the right level of D3 can help you lose weight in many ways.

For instance, higher levels of D3 promotes the release of more leptin, a hormone that tells us we are full and consequently feel more satisfied. Low D3 levels also affect the thyroid gland, producing chemicals that promote fat storage. And a newer study showed that higher D3 levels resulted in more weight loss.


We are highly evolved animals, that until recently lived outside. The seasonal variations in sunlight through D3 production on our skin signal to our bodies that we should either store fat to make it through the winter, or burn fat to build muscle and have children. When D3 levels are low, our bodies think its winter, and we store fat, remember that extra 10 pound you put on in the winter? Dieting and exercise are less effective with low D, and your body doesn’t know there is a 24hr grocery store down the street, and that you are trying to fit into that bikini for Hawaii. Your body just thinks it’s winter, and won’t let that fat go! So many of us are trapped in a fat permanent winter.

How to escape permanent winter: Increase your Vitamin D consumption to 5000IU per day.

Dr. Joel Gould

Dr. Joel Gould

Ideal levels are considered to be above 40 ng/ml, but if you are a lifeguard, you could safely be as high as 100, with the consensus on ideal depending on who you talk to ranging from 60-80. Anything below 20 is considered deficient, and its suggested that 90% of Americans are low on D. Toxicity is very hard to achieve, considering we make over 20,000 IU in the sun in about an hour.


To raise your D3, supplements and “safe sun exposure “both work. Check and consult with your doctor before making any changes to your diet and supplements.

It’s all about the D!

(Editor’s note: Dr. Gould runs Modern American Dentistry. For the Doctor’s informative podcasts check here.)



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