It has been demonstrated that a vegetarian diet may be effective in reducing body weight, however, the underlying mechanisms are not entirely clear. Additionally it ha s been shown that among Seventh-day Adventists, vegans have a lower BMI than other dietary groups even after controlling for physical activity and caloric intake.
This study investigated whether there is a difference in resting energy expenditure between 26 vegetarians and 26 non-vegetarians.
This small study confirms a previous observation that the resting energy expenditure of vegetarians is higher than that of non-vegetarians. One new finding from this research is that vegetable fat intake appears to be a contributing factor to the higher resting energy expenditure.
These results are in line with the observation that an intervention with nuts, rich in vegetable fat, to a habitual diet does not result in weight gain despite the increased energy intake.
Overall the authors underline the need to encourage people to follow a plant-based diet.
Montalcini T, De Bonis D, Ferro Y, et al. High vegetable fats intake is associated with high resting energy expenditure in vegetarians. Nutrients. 7,5933-5947 (2015).