Body Weight Gain & Peanuts in Diet
Body Weight Study Aim
Chronic peanut consumption effects on energy balance and hedonics.
Body Weight Study Method
33 participants were provided 2113±494 kJ/day (505±118 kcal/day)
as peanuts for 8 weeks with no dietary guidance, 3 weeks with instructions
to add peanuts to their customary diet and 8 weeks where peanuts replaced
an equal amount of other fats in the diet.
Body Weight Study Subjects
Fifteen, healthy, normal-weight (BMI of 23.3±1.8) adults, aged
33 years.
Body Weight Study Measurements
Dietary intake, appetitive indices, energy expenditure, body weight and
hedonics.
Body Weight Study Results
Peanut consumption elicited a strong compensatory dietary response (ie
subjects compensated for 66% of the energy provided by the nuts) and body
weight gain (1.0 kg) was significantly lower than predicted (3.6 kg).
When customary dietary fat was replaced with the energy from peanuts,
energy intake, as well as body weight, were maintained precisely. Participants
were unaware that body weight was a research focus. Resting energy expenditure
was increased by 11% after regular peanut consumption for 19 weeks. Chronic
consumption of peanuts did not lead to a decline in pleasantness or hunger
ratings for peanuts nor did it lead to any hedonic shift for selected
snack foods with other taste qualities during any of the three treatments.
Body Weight Study Conclusion
Despite being energy dense, peanuts have a high satiety value and chronic
ingestion evokes strong dietary compensation and little change in energy
balance.
Source: International Journal of Obesity
(2002)
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