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Why A High-Fat Diet is Healthy and Safe | Mark’s Daily Apple

Posted: May 22, 2015 at 7:51 am

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A couple weeks back, I wrote about the top 8 most common reactions you get when people hear you dont eat grains, and I offered up some concise responses to those reactions. It was well received, so I thought Id do the same thing for your high-fat diet. If you thought having to explain your grain-free diet was tough, explaining a high-fat diet in particular, a high-animal fat diet may seem even harder. At least with a grain-free diet, youre merely removing something that many hold near and dear to their hearts. Its healthy and delicious, sure, but at least youre not adding something that will actively kill you. Fat is that deadly thing, for many people. Its fat, for crying out loud. Its bad for you, practically a poison. Everyone knows it. I mean, have you seen what fat down the kitchen drain does to your plumbing?

Actually, like the grain-free diet, explaining the high-fat diet is not that hard. Ill even promise you that there are ways to do it, explanations and answers that dont make you seem like a crazy person who hates his heart (I make no such promises for those of you with a stick of butter with bite marks and a tub of coconut oil with a greasy spoon beside it on your office desk, however). Now lets get right to their questions and responses you can use:

Isnt all that fat gonna glom onto your arteries?

That isnt how it works. Atherosclerosis is caused by oxidized LDL particles penetrating the arterial wall, inciting inflammation, and damaging the arterial tissue. It is not caused by fat mechanistically attaching itself to the surface of the arteries like fat in a kitchen pipe. Also, its not like you eat some butter and that butter gets directed straight into your bloodstream. Your blood doesnt have oil slicks running through it, or congealed droplets of grease gumming up the passageways. You are the product of millions upon millions of years of evolution, and I think our bodies can do better than trying to ape modern plumbing.

Response: My arteries are not pipes. Fat is not solidifying in my blood like it can in the plumbing. Atherosclerosis is a complex process with dozens of factors beyond whats in your diet, let alone the fat content.

Isnt all that cholesterol gonna raise your cholesterol?

If I were a rabbit, sure. When you feed cholesterol to an herbivorous animal, like a rabbit, whose only encounters with dietary cholesterol occur in a lab setting, their blood lipids will increase and they will usually develop atherosclerosis. For many years, the cholesterol-fed rabbit was a popular model for studying heart disease and gave rise to the now-popular idea that dietary cholesterol also elevates blood lipids in humans (thus immediately condemning them to a heart attack, naturally). Except it isnt the case. Save for a select few who are hyper-responders, the vast majority of people can eat cholesterol without it affecting their cholesterol levels. And even when dietary cholesterol affects blood lipids, its usually an improvement, increasing HDL and the HDL:TC ratio while leaving LDL mostly unchanged.As for where all that blood cholesterol comes from, we make pretty much all the cholesterol in our blood in-house, and dietary cholesterol tends to suppress endogenous cholesterol synthesis. Boy, between staying local and only making as much as we need, our livers are downright green. I bet our HDL is GMO-free and organic to boot (not so sure about those sneaky LDL particles, though).

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Why A High-Fat Diet is Healthy and Safe | Mark's Daily Apple


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