The Science and Evolution of Why We Store Bodyfat

There is a truly awesome lecture by Dr. Scott Connelly wherein he describes the science and evolution of why we store bodyfat at the following links.

The lecture contains the best explanation I’ve ever heard of the relationship between what we eat, how much insulin our bodies produce, and how much fat our bodies subsequently store.

In his lecture, Dr. Connelly describes why mammals evolved to be able to store large amounts of energy as fat and how the entire process is controlled by insulin.  (An excerpt of the portion of Dr. Connelly’s lecture where he discusses insulin can be found at this link:

Dr. Connelly also reveals why the equation “bodymass = calories in – calories out” does not work in the real world.  It’s the same reason why some people can maintain an obese body on less than 1000 calories a day and why I can maintain a lean-beanpole body while eating in excess of 1500 fat calories a day in addition to the other calories I ingest daily.

Dr. Connelly discusses insulin’s role as a fat storage regulator in depth.  He says that insulin is the most powerful hormone in our bodies and that it controls a whole host of other important processes in the body.  And what’s more is that we are able to control the amount of insulin that our bodies produce by choosing the foods we eat.

The traditional western diet, and especially sugars, grains that are quickly converted to sugars, and the worst sugar of all — fructose, are to blame for the obesity epidemic that we see today and all of the health problems associated with it.

Dr. Connelly then recommends a few simple eating tips that can be used to control how much insulin our bodies produce, how our bodies react to insulin, and to control how much fat our bodies store.

He admits that, unfortunately, his recommendations fly in the face of the traditional western food pyramid and recommendations by the FDA, and that Americans are so used to eating sugars and grains that it will be difficult for most people to make the simple eating changes he recommends.

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