Switching to a very low-carb diet is a major change, and your body may need time to adapt to this new way of eating.
For some people, this transition period can be especially difficult.
Signs of the keto flu may start popping up within the first few days of cutting back on carbs.
Symptoms can range from mild to severe and vary from person to person.
While some people may transition to a ketogenic diet without any side effects, others may experience one or more of the following symptoms (4):
- Muscle cramps
- Poor concentration
- Stomach pain
- Muscle soreness
- Difficulty sleeping
- Sugar cravings
These symptoms are commonly reported by those who have just begun the ketogenic diet and can be distressing.
Symptoms typically last about a week, though some people may experience them for a longer period of time.
While these side effects may cause some dieters to throw in the towel, there are ways to reduce them.
When beginning a ketogenic diet, some people may experience symptoms, including diarrhea, fatigue, muscle soreness and sugar cravings.