PURPOSE: It has been hypothesized that leptin-induced appetite suppression is impaired in obese individuals, but little human evidence is available documenting this. We investigated relations between serum leptin and total energy intake using INTERLIPID/INTERMAP data on Japanese-Americans in Hawaii and Japanese in Japan. METHODS: Serum leptin and nutrient intakes were examined by standardized methods in men and women aged 40-59 years from two population samples, one Japanese-American in Hawaii (88 men, 94 women), the other Japanese in central Japan (123 men, 111 women). Multiple linear regression analyses stratified by BMI category (<25 kg/m(2), 25-29.9 kg/m(2), and ≥ 30 kg/m(2)) with adjustment for possible confounders were used to examine the relation between log-leptin and total dietary energy intake. RESULTS: In multivariate regression analyses, in those with BMI < 25 kg/m(2) and in those with BMI between 25 and 29.9 kg/m(2), log-leptin was not significantly related to total dietary energy intake; in those with BMI ≥ 30 kg/m(2), it was significantly inversely related to total dietary energy intake (P = 0.029), independent of body weight and physical activity. Physical activity score was significantly positively related to total dietary energy intake only in participants with BMI < 25 kg/m(2) (P < 0.001). CONCLUSION: Leptin was significantly inversely associated with dietary energy intake in obese persons, but not in overweight and normal-weight persons.
PURPOSE: It has been hypothesized that leptin-induced appetite suppression is impaired in obese individuals, but little human evidence is available documenting this. We investigated relations between serum leptin and total energy intake using INTERLIPID/INTERMAP data on Japanese-Americans in Hawaii and Japanese in Japan. METHODS: Serum leptin and nutrient intakes were examined by standardized methods in men and women aged 40-59 years from two population samples, one Japanese-American in Hawaii (88 men, 94 women), the other Japanese in central Japan (123 men, 111 women). Multiple linear regression analyses stratified by BMI category (<25 kg/m(2), 25-29.9 kg/m(2), and ≥ 30 kg/m(2)) with adjustment for possible confounders were used to examine the relation between log-leptin and total dietary energy intake. RESULTS: In multivariate regression analyses, in those with BMI < 25 kg/m(2) and in those with BMI between 25 and 29.9 kg/m(2), log-leptin was not significantly related to total dietary energy intake; in those with BMI ≥ 30 kg/m(2), it was significantly inversely related to total dietary energy intake (P = 0.029), independent of body weight and physical activity. Physical activity score was significantly positively related to total dietary energy intake only in participants with BMI < 25 kg/m(2) (P < 0.001). CONCLUSION:Leptin was significantly inversely associated with dietary energy intake in obesepersons, but not in overweight and normal-weight persons.
Authors: M Rosenbaum; M Nicolson; J Hirsch; S B Heymsfield; D Gallagher; F Chu; R L Leibel Journal: J Clin Endocrinol Metab Date: 1996-09 Impact factor: 5.958
Authors: Harry R Kissileff; John C Thornton; Migdalia I Torres; Katherine Pavlovich; Laurel S Mayer; Vamsi Kalari; Rudolph L Leibel; Michael Rosenbaum Journal: Am J Clin Nutr Date: 2012-01-11 Impact factor: 7.045
Authors: J L Halaas; K S Gajiwala; M Maffei; S L Cohen; B T Chait; D Rabinowitz; R L Lallone; S K Burley; J M Friedman Journal: Science Date: 1995-07-28 Impact factor: 47.728