Cool body temperature no cause for extra pounds

March 10, 2011 in Nutrition Topics in the News, Weight Management

Cool body temperature no cause for extra pounds
New study findings from researchers at the U.S. National Institute of Child Health and Human Development are contradicting one theory linking body temperature to obesity.  

Some animal research has suggested that a cooler body temperature is a marker for a slower metabolism, which can increase the risk of obesity.

The theory is based on the idea that people with a higher core temperature are less likely to pack on the pounds because the body has to burn calories in order to rid itself of excess heat and return to a desirable internal temperature. A cooler core temperature would mean less heat to shed and require fewer calories to be burned.  However, these latest findings suggest otherwise.

To investigate, researchers compared the average core temperature of a group of obese adults with that of thinner men and women.

In one experiment, 46 obese and 35 normal-weight or overweight adults swallowed a wireless, temperature-sensing capsule that continuously monitored their body temperature over 24 hours.

On average, the study found, there was no difference in the two groups' core temperatures, with both groups around 36.9 degrees Celsius.

In a second experiment, the researchers used the capsules to measure core temperature in 19 obese and 11 normal-weight people over 2 days, while the participants kept a record of their daily activities.

Again, the two groups were similar with no clear differences in body-temperature fluctuations throughout the day.

The study is the largest so far to look at core temperature and obesity in humans.

The findings were published in the American Journal of Clinical Nutrition.

All research on this web site is the property of Leslie Beck Nutrition Consulting Inc. and is protected by copyright. Keep in mind that research on these matters continues daily and is subject to change. The information presented is not intended as a substitute for medical treatment. It is intended to provide ongoing support of your healthy lifestyle practices.