If you are trying to lose weight, it’s tricky to know how much fat you are burning, but an American company claims to have the solution - using your breath.

LEVL has created a breathalyser for home use. It uses a proprietary sensor that measures the amount of acetone in your breath.

When your body has very little glucose to break down, it starts to burn its own fat for energy. This is called ketosis. Many diets recommended ketosis - attained by reducing carbohydrate levels - as a method of losing weight.

During ketosis the body generates ketone bodies (molecules), including acetone. Acetone is a small molecule, so can be detected in the breath.

LEVL breathalyser

How to use the breathalyser:

Breathe into the breathalyser pod and insert it into the docking station where the sensor measures the concentration of acetone, before converting it into a fat burn level - the LEVL score – which appears on the device.

The higher the LEVL score the more fat you are burning.

The companion LEVL app lets you compare results over time, along with calories burnt and weight.  

This allows you to understand more about your metabolism and adjust your habits accordingly - for instance increasing the intake of healthy fats or exercising more.

Brad Root, founder and president of LEVL, said: “Users can understand their body’s metabolic state and make plans based on what will work for them. Because now, the body’s fat burning state can be measured in one breath.”

The method of measuring acetone levels on breath as an indicator of ketosis isn’t new and has been proven by scientific studies.

While the long-term benefits of a low-carb ketosis diet are still being debated, LEVL looks like an interesting device for understanding more about your eating habits, although it’s currently a prototype and still under development.

The LEVL breathalyser is expected to be available later in 2016. There’s no news on UK pricing or availability.

What do you think of LEVL? Would you use it to monitor your fat levels? Let us know in the Comments section below.