“If the diet is changed from a highly glycemic diet to a diet that does not provide sufficient carbohydrate to replenish glycogen stores, the body goes through a set of stages to enter ketosis. During the initial stages of this process the adult brain does not burn ketones, however the brain makes immediate use of this important substrate for lipid synthesis in the brain. After about 48 hours of this process, the brain starts burning ketones in order to more directly utilize the energy from the fat stores that are being depended upon, and to reserve the glucose only for its absolute needs, thus avoiding the depletion of the body’s protein store in the muscles. ” – Wikipedia
Does this not mean that the body takes fat stores before taking away muscle? cos everyone always says anorexia takes ur muscle mass. . or does this depend how far you are into the process i. e. if you are normal weight near underweight and hav few fat stores then your body will feed on muscle?
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One reply on “Ketosis/anorexia-related Question?”
It may be true for a while, but when the body starts running out of fat or it determines muscle tissue is easier to burn, it’ll take what it can get if it’s not being fed/fueled properly. The body will take what it needs to survive (from itself). If a person restricts their eating severely they will indeed lose muscle…
Without consuming protein to build and strengthen muscle, there’s not going to be any improvement in that area anyway. The body has no way to rebuild/replenish what it’s taking for fuel to survive.