Swedish researchers have discovered that a low-calorie diet can register a false positive on certain in-car ignition interlock devices that disable a vehicle if alcohol is detected on one's breath.

The anomaly was discovered when a non-drinking airplane pilot reported the incident. Turns out the man was on a very restrictive diet that had him losing weight rapidly, which is what may have caused the false reading.

As reported in the latest issue of the International Journal of Obesity, motorists on very low-calorie diets may release certain ketones that could be converted into a secondary alcohol known as isopropanol.

Police officials point out that false positives are eliminated in the field as breathalyzer tests are used in conjunction with secondary tests that focus on the type of alcohol and other factors. No citation for drunk driving should be issued in those situations. However, if you have one of these interlock devices on your car, your low-cal diet could spell the demise of your travel plans.

[Source: drive.com.au]


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