I recently read about studies that show a counterintuitive relationship between consuming higher fat dairy products and reduced body weight (e.g. http://n.pr/1kBi0fZ). I read this with concern because animal fats, such as those in high fat dairy products, are a key source of fat-soluble toxins to our bodies (see http://bit.ly/1hywXix) and it can take many years to clear these toxins from our tissues.
What isn’t clear from these studies is whether there are alternatives to dairy fats or animal fats in general that would achieve the same result. For example, they didn’t assess whether people could replace full fat dairy products with healthy vegetable fats, like those in avocados and nuts, to achieve satiety while avoiding the toxins that bioaccumulate in animal fats.
Vegetarian, especially vegan diets, have been linked to lower diabetes, heart disease, and cancer risks (see http://bit.ly/1mQCGT7). And consuming these foods instead of meat products (including fatty dairy products) definitely reduces your exposure to fat-soluble toxins such as PCBs and dioxins, which are taken up by animals at levels many orders of magnitude higher than plants.
One of these studies on body weight versus dairy fat consumption mentioned the presence of omega-3 fats in organic high fat dairy products as an added health benefit. But there are definitely cleaner sources of these fats. And because most people consume non-organic dairy products, I am concerned about the advice to increase consumption of high-fat dairy since cattle raised conventionally produce lower levels of omega-3 fats in addition to accumulating fat-soluble toxins.
Sometimes what’s best for you in terms of other health indicators may not be best for you with respect to reducing your exposure to toxic chemicals, like the benefits of breast-feeding versus toxins in breast milk and the use of sunscreens with potentially toxic ingredients versus protecting your skin from damaging ultraviolet radiation. In those cases, breast-feeding and reducing exposure to ultraviolet rays make sense, even if they increase exposure to certain toxins.
But in this case, I really would love to see studies compare a vegetarian, low toxin alternative to this association between consumption of dairy fat with lower body weight.
For now, I think the bottom line is to try the vegetarian approach toward achieving a smaller ‘bottom’ to avoid increasing your risk of diseases associated with exposure to toxic contaminants, especially the fat-soluble ones present in high fat dairy products.