Induction Flu (Carb flu)

When you stop eating sugar you may experience some side effects as your body adjusts. For most people these side effects tend to be mild and last a just few days.

There are side effects that may occur when you suddenly start a strict low carb diet.

The most common side effect is called the induction flu or carb flu. This is generally what makes some people feel really not great 2-3 days after starting low carb.

Here are the common symptoms:




Light nausea


These side effects go away really quickly as your body adapts and your fat burning increases. Within a week, they are usually gone.

The reason for this is that carbohydrate-rich foods may increase water retention in your body. When you stop eating high-carb foods you’ll lose excess water through your kidneys. This can result in dehydration and a lack of salt during the first week, before the body has adapted, resulting in the symptoms above.

TIP: You can minimize the carb flu by drinking lots of fluids and by temporarily increasing your salt intake (drink a few extra glasses of water and put more salt on your food).

Other common issues on low carb

Besides the carb flu, there are five more common side effects. Many of them can also be mostly avoided by getting enough fluid and salt.

leg cramps


bad breath

heart pulpitations

reduced physical performance


Potential side effects on low carb

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