Obesity and vitamin D   2000
Clipped from: http://www.westonaprice.org/The-Miracle-of-Vitamin-D.html    2000
(author, a nutritionist, also wrote a book in 2004 and has updated manuscript 2009)
Did you ever wonder why some people can eat all they want and not get fat, while others are constantly battling extra pounds? The answer may have to do with vitamin D and calcium status. Sunlight, UV-B, and vitamin D normalize food intake and normalize blood sugar. Weight normalization is associated with higher levels of vitamin D and adequate calcium.61 Obesity is associated with vitamin-D deficiency.62-64 In fact, obese persons have impaired production of UV-B-stimulated D and impaired absorption of food source and supplemental D.65
When the diet lacks calcium, whether from D or calcium deficiency, there is an increase in fatty acid synthase, an enzyme that converts calories into fat. Higher levels of calcium with adequate vitamin D inhibit fatty acid synthase while diets low in calcium increase fatty acid synthase by as much as five-fold. In one study, genetically obese rats lost 60 percent of their body fat in six weeks on a diet that had moderate calorie reduction but was high in calcium. All rats supplemented with calcium showed increased body temperature indicating a shift from calorie storage to calorie burning (thermogenesis).61
References (from 2000 – the following is an image, not text)