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U.S. Weight (Monthly)

Based on the Gallup-Sharecare Well-Being Index

Date(s)% Obese% Overweight% Normal weight% Underweight
09/1-30/201528.1%35.6%34.6%1.7%
08/1-31/201528.5%35.9%33.7%1.9%
07/1-31/201528.0%36.5%33.5%2.0%
06/1-30/201528.6%35.6%34.0%1.8%
05/1-31/201528.1%34.7%35.0%2.2%
04/1-30/201528.8%35.1%34.4%1.7%
03/1-31/201528.4%35.1%34.8%1.8%
02/1-28/201528.2%35.0%35.1%1.7%
01/1-31/201527.3%35.6%35.3%1.8%
12/1-30/201427.8%35.1%35.2%1.9%

The Gallup-Sharecare Well-Being Index calculates Americans' Body Mass Index (BMI) scores based on respondents' self-reported height and weight. Individual BMI values of 30 or above are classified as "obese," 25 to 29.9 are "overweight," 18.5 to 24.9 are "normal weight," and 18.4 or less are "underweight." Monthly results as of January 2013 are based on telephone interviews with approximately 14,500 national adults; margin of error is ±1 percentage point.

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Gallup https://news.gallup.com/poll/151178/Weight-Monthly.aspx
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