A recent study published in the International Journal of Behavioral Nutrition and Physical Activity reveals that meal timing may play a crucial role in maintaining a healthy body mass index (BMI). Conducted by the Barcelona Institute for Global Health (ISGlobal) and involving over 7,000 participants aged 40-65, the research suggests that extending the overnight fast and eating breakfast early are associated with lower BMI in the long term.
Participants completed questionnaires about their eating habits, lifestyle, and socioeconomic status in 2018, with follow-ups conducted five years later. Findings indicate that aligning meal times with circadian rhythms—having an early dinner and breakfast—can enhance calorie burning and appetite regulation.
The study also highlighted gender differences, showing women generally exhibited lower BMI and higher adherence to a Mediterranean diet compared to men. Notably, a subgroup of men who fasted until after 2 PM had poorer lifestyle habits and health outcomes. Researchers emphasize that while these findings are promising, further research is needed to establish definitive recommendations. This work contributes to the emerging field of “chrononutrition,” which examines how the timing of food intake affects health outcomes.
