How to Know When Your Body Is in Ketosis?

Find out how to scientifically measure whether your body is in ketosis and the tell-tale symptoms of ketosis that do not require any form of testing.

By HourlyTraining
Edited by Tom Amitay

Published September 30, 2020.

There are a few scientific ways of measuring whether your body has gone into ketosis, however, there are also a number of tell-tale symptoms that do not require any form of testing.

What Are the Symptoms of Ketosis?

Dry Mouth and Increased Thirst

Most people experience increased thirst once their bodies are in ketosis. Unless you drink plenty of water throughout the day, you may experience a very dry mouth and even possibly a metallic taste in your mouth.

Increased Urination

When the body goes into ketosis, a ketone body known as acetoacetate, which makes it possible to test for ketosis through the use of urine strips, may end up in the urine, resulting in increased urination.

Bad Breath

When the body is in ketosis, a ketone body known as acetone may escape the body via the breath, resulting in a smell similar to that of nail polish. It is also possible that this scent is released through sweat.

Reduced Hunger

Many people experience a suppressed appetite once their bodies are in ketosis. Although the reason for this has not been proven, it has been suggested that this hunger reduction may be due to an increased protein and vegetable intake, along with alterations to your body’s hunger hormones.

Increased Energy

Initially, many people experience symptoms known as "keto flu", however, after a few days many people may feel an increase in energy levels, clear thinking and a sense of elation.

How to Measure Ketosis?

There are three main ways to measure for ketones:

  • Urine strips
  • Breath ketone analyzers
  • Blood ketone meters