Within the first week of going keto (or shortly after fasting), you will notice these ketosis signs and symptoms.
Keto breath resembles nail polish remover or even overripe fruit. What you're smelling here is acetone, a ketone body that gets expelled by the lungs. You can learn more about keto breath by visiting the following links.
You may lose up to 10 lbs in the first week of ketosis . But don't get excited just yet. This is only water weight, and it will take more time for your body to start burning fat (up to 2lbs a week).
Ketones in urine
This is a sure sign you're in ketosis. The only way to find out if there are any ketones in your urine is by using ketone urine test strips. You may also look for ketones in your blood with the help of a blood ketone meter, but this is a bit expensive and a bit invasive.
Being in ketosis alters levels of nutrients and hormones that control appetite [2,3]. This appetite-lowering effect is also controlled by ketones themselves.
Fatigue is mostly the result of electrolyte imbalances caused by loss of water weight we mentioned earlier.
Any major change to your diet is bound to cause digestive issues until you start producing the right digestive enzymes and until your gut microbiome adjusts . Things you may experience include constipation, diarrhea, and stomach pain.
Research found that carb intake impacts sleep architecture . While most studies show that keto increases time spent in deep sleep, some people may experience insomnia in the early stages of ketosis.