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Hoots : To lose fat in ketosis should I avoid fatty foods? I'm 95kg, 195cm tall. Aiming to lose some fat, eating < 50g carbs a day. I know I need fat to generate ketones for healthy brain function, should I avoid eating fat - freshhoot.com

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To lose fat in ketosis should I avoid fatty foods?
I'm 95kg, 195cm tall. Aiming to lose some fat, eating < 50g carbs a day.
I know I need fat to generate ketones for healthy brain function,

should I avoid eating fat so that my body uses my own stored bored fat to generate glucose or should I still eat fatty foods? (coconut oil, nuts, fat from steak etc...)

Thanks! (O.o)/")


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Although I disagree with taking on a low carb diet (with special medically advised exceptions), I'd advise you to absolutely consume fat, particularly healthy plant based fats, like nuts and avocados. Avoid animal based fats.

Fat will be your primary energy source if you're trying to induce ketosis.

But once again, there are far more effective ways of changing your body composition, and realistically speaking, are you willing to eat like that the rest of your life? Otherwise it's simply temporary, and why would you put yourself through the hassle?


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Assuming that you are able to generate ketones from your stored fat, it's still a bad idea to under-eat fat, because each fat cell can only deliver a certain amount of energy per day, when your calorie deficit goes beyond this point, you will start breaking down muscle tissue (which is much lower in energy density than fat tissue), leading to rapid but bad weight loss.


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I'm in favor of low carbohydrates for two primary reasons:

Ketosis is legimate, effective, and safe way to cut down on body fat. There are examples of native people who historically ate very little carbohydrates for generations.
Most of the sinister cheap calories in a western diet come from carbohydrates. Even following a "low carbohydrate diet" still has you ingesting more than you probably want to.

should I avoid eating fat so that my body uses my own stored bored fat
to generate glucose or should I still eat fatty foods?

Keep eating fatty foods, and keep eating protein. I would also add in there there are a lot of vegetables that are low carbohydrates. Things like tomatoes and lettuce tend to be pretty low in the carbohydrate spectrum.

I'm of the opinion, backed by a lot of professionals, that carbohydrates are not necessary in your diet. This was a fairly balanced article on the whole issue:

Although there is certainly no evidence from which to conclude that
extreme restriction of dietary carbohydrate is harmless, I was
surprised to find that there is similarly little evidence to conclude
that extreme restriction of carbohydrate is harmful. In fact, the
consequential breakdown of fat as a result of carbohydrate restriction
may be beneficial in the treatment of obesity. Perhaps it is time
to carefully examine the issue of whether carbohydrate is an essential
component of human nutrition.

One of my more preferred nutritional writers is Lyle McDonald, who takes it a step further and makes the distinction between glucose and glycogen which can often be (incorrectly) used interchangeably:

When carbohydrates are restricted completely, the body still has a
small requirement for glucose (although this decreases over time) and
the body has to find something to make glucose out of. That something
is lactate and pyruvate (produced from glucose metabolism), glycerol
(from fat metabolism) and some amino acids. It’s the amino acid use
that can be problematic since they have to come from somewhere.

If you're aiming for <50g of carbohydrates a day, you need to keep your protein and fat up because your calories need to come from somewhere. Protein in particular matters a lot because your body will breakdown proteins (as well as fat) to produce glucose.

Also, take care to ensure you're getting enough nutrients. Those 50g of carbohydrates should be almost exclusively vegetables.


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