Defending Saturated Fats

I mentioned a while back that I was reading the book “The Big Fat Surprise” which argues that—contrary to conventional wisdom—a diet high in saturated fats (e.g. meat, dairy etc) is good for you. This should not be understood to say that a diet high in trans-fats (e.g. Cheetos, crackers, etc.) is good for you. Because it is not.

The book also states that a diet high in carbs is bad for you, leading to obesity and diabetes.

These are controversial assertions, certainly, and they basically imply that the U.S Government has been recommending an awful diet (high carbs, low fats) for years.

Nonetheless, I’ve noticed several pieces popping up recently on a science blog I frequent called Science Daily that seem to support the arguments made by “The Big fat Surprise.” Consider…

Trans fats, but not saturated fats like butter, linked to greater risk of early death and heart disease

A study led by researchers at McMaster University has found that that trans fats are associated with greater risk of death and coronary heart disease, but saturated fats are not associated with an increased risk of death, heart disease, stroke, or Type 2 diabetes.

The team found no clear association between higher intake of saturated fats and death for any reason, coronary heart disease (CHD), cardiovascular disease (CVD), ischemic stroke or type 2 diabetes.

However, consumption of industrial trans fats was associated with a 34 per cent increase in death for any reason, a 28 per cent increased risk of CHD mortality, and a 21 per cent increase in the risk of CHD.

Low saturated fat diets don’t curb heart disease risk or help you live longer

Diets low in saturated fat don’t curb heart disease risk or help you live longer, says a leading US cardiovascular research scientist and doctor of pharmacy in an editorial in the open access journal Open Heart.

Now I’m the first to admit that one should tread carefully here as none of these statements has really been “proven.” (Studies need to be replicated about a billion times to really have merit.) But “The Big Fat Surprise” did make some interesting anecdotal points that stuck with me. Consider Eskimos. For years they basically ate a diet of fatty fish and game—and had rates of cardiovascular disease much lower than non-Native Americans* (e.g. white people.) Then they shifted over to the high carb diets of the white man and they were assaulted with such disease. The Masai in Africa are a similar case study.

* Here’s an interesting Discover magazine article about this called “The Inuit Paradox.”

So it seems fair to ask questions.

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