QUICKLINKS AND VIEW OPITONS
Formerly-obese people show low metabolism, low T3 thyroid hormone
Wednesday, April 07, 2004 2:50 pm Email this article
RESTING METABOLIC RATE was found to be 8 percent lower in formerly-obese women than in non-obese women according to a recent study.
A group of 28 weight-stable post-obese women with a family history of obesity were compared to 28 nonobese women.
Adjusting for muscle mass and fat mass did not change the results.
Daily calorie expenditure was 1399 calories in the formerly obese women compared to 1531 calories in women who had never been obese.
The formerly-obese groups also had lower levels of free triiodothyronine (T3 thyroid hormone), 2.4 vs 3.4 pmol/liter, respectively.
Adjusting for the difference in levels of T3 accounted for the difference in metabolism.
The authors noted that although low levels of T3 could certainly explain low metabolism in post-obese, cause and effect still need to be established.
Although it does not seem to be a popular notion with doctors—perhaps because of problems caused by large doses of thyroid given to obese patients in the past in an attempt to help them lose weight—it seems to me it would be a good idea to supplement formerly-obese patients with small amount of T3 to bring their levels up to normal.
Many years ago thyroid supplements were shown to cause weight loss, however, only half the weight loss was fat, and the other half was lean body mass (muscle).
With dieting, weight loss is roughly three-fourths fat and only one-fourth muscle (lean body mass).
Astrup A, Buemann B, Toubro S, Ranneries C, Raben A. Low resting metabolic rate in subjects predisposed to obesity: a role for thyroid status. American Journal of Clinical Nutrition, Jun 1996, 63(6):879-83.
Articles on the same subject can be found here:
Please feel free to share your comments about this article.
© Copyright 2003-2017 - Larry Hobbs - All Rights Reserved.