How Long Does It Take to Get Into Ketosis?


Quick Answer

It usually takes at least two days for the body to go into ketosis, provided that carbohydrate intake is restricted to 20 grams. Ketosis is the second stage of a two-part metabolic process called lipolysis/ketosis, which occurs when the body burns stored fat for fuel instead of carbohydrates, producing ketones.

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Full Answer

Caffeine can affect ketosis, but changes are usually only apparent in people who are very sensitive or insulin-resistant. When in ketosis, hydration is crucial. Water helps the kidneys flush ketones out of the system.

One of the dangers of being in extended ketosis is the risk of burning muscle tissue. However, when eating a diet with an adequate amount of protein, the body has no need to break down muscle tissue. Ketosis is also thought to accelerate fat loss. The liver works to convert fat into ketones; excess ketones cannot be converted back into fat and are excreted instead.

When in ketosis, a diet must be high in fat. The lipolysis/ketosis reaction causes the body to use up its glycogen storage before targeting fat cells. It is possible to detect when the body is in ketosis by urinating on induction strips, but not everybody produces enough ketones for the excess to be excreted. It is also possible to be in ketosis without losing weight.

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