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Overeating does not increase basal metabolism long-term
Thursday, June 01, 2006 3:07 am Email this article
Overeating does not increase basal metabolism long-term according to a new study from the the Mayo Clinic. Subjects
16 Subjects ate an extra 1,000 calories per day
Sixteen lean healthy subjects were fed an extra 1,000 calories per day and had their basal metabolism checked.
Week One: 17 extra calories burned per day
After one week basal metabolism had increased by only 17 calories per day from 1693 to 1711.
Week Two: 88 extra calories burned per day
After two weeks it had increased by only 88 calories per day to 1781.
Week Three: 36 extra calories burned per day
During the third week basal metabolism fell to 1729 or 36 calories more than before they started.
Week Five and beyond: No more changes
After the fifth week basal metabolism had reached a plateau and did not change after that.
Conclusion: Short-term increase, but not long-term
“There seems to be a short-term increase in BMR in the first 2 weeks of overfeeding that is not representative of longer-term changes,” the paper concluded.
Harris AM, Jensen MD, Levine JA. Weekly changes in basal metabolic rate with eight weeks of overfeeding. Obes Res. 2006 Apr, 14(6):690-5.
AUTHOR’S CONTACT INFORMATION
James A. Levine
Endocrine Research Unit
200 First Street, SW
Rochester, MN 55905
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