The 11 Most Common Keto Side Effects

Sugar Cravings 

Many people find that during the beginning stages of a ketogenic diet they experience intense food cravings. These food cravings are typically for high-sugar foods and tend to really challenge your willpower.

This is a classic hypoglycemia response as well. The brain in particular requires lots of energy for normal function. When it receives a signal that you are hypoglycemic, a panic response occurs because of an underlying perception that you are starving to death (even if consciously you know you’re not).

At this point your brain begins to tell you that, “YOU NEED IMMEDIATE ENERGY NOW OR YOU’RE GOING TO DIE”! This is when you have intense sugar cravings. Luckily, once you begin to produce ketones for energy this panic response calms down.

Dizziness & Drowsiness 

When you are hypoglycemic while also not being fully keto-adapted, you essentially have an energy deficiency within the body.

During this time, you will likely feel dizzy and drowsy due to a general lack of energy. You may feel especially dizzy upon standing due to blood pressure dysregulation and inappropriate cortisol response (HPA axis dysregulation which we’ll talk about shortly).

Reduced Strength & Physical Performance 

During keto-adaptation, your body is learning to utilize a completely new fuel source that it has not had to use before. The muscles (along with the brain) contain tons of mitochondria for energy production that must now learn to utilize ketones as an energy source.

During this time, you will likely feel a significant drop in strength and ability to exert physical energy. Luckily, once you become adapted you should see drastic improvements in these areas that are even greater than when you were sugar-adapted!

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