A short period of excess food consumption can have long term effects on your body weight and fat storage even after the initial weight is lost. A study published in BioMed Central's open access journal Nutrition & Metabolism has found that a four-week episode of increased energy intake and decreased exercise can cause increased weight and fat mass more than two years later when compared to control individuals.
Åsa Ernersson worked with a team of researchers from Linköping University Sweden to investigate the long term effects of a sedentary and gluttonous lifestyle. They capped the physical activity of 18 individuals and used excessive food consumption to increase their energy intake by an average of 70% for four weeks. A separate control group ate and exercised as normal.
A long vacation pig-out could have long term consequences.
A very interesting result: The overeating group experienced a long term shift to higher weight.
The intervention group gained an average of 6.4 kg in body weight, which was mostly lost 6 months later. However, one year later the intervention group showed an increased fat mass compared to baseline; the differences were even greater after two and a half years. Ernersson said "The long term difference in body weight in the intervention and control groups suggests that there is an extended effect on fat mass after a short period of large food consumption and minimal exercise."
What I want to know: is there some way to recalibrate one's metabolism permanently toward a lower weight? Or is human metabolism ratchetable only in one direction?
I also wonder about actors who gain weight for a part. Did Renee Zellweger have a tougher time staying emaciated after she played Bridget Jones?
|Share |||Randall Parker, 2010 August 30 09:20 PM Aging Diet Weight Studies|