Researchers Identify Two Easy Eating Habits That May Aid Weight Loss

What if when you eat matters just as much as what you eat? Emerging research suggests that meal timing could play a key role in maintaining a healthy weight.

A study published in the International Journal of Behavioral Nutrition and Physical Activity found that two simple habits—eating earlier in the day and extending the overnight fasting window—are associated with a lower body mass index (BMI) over time. The research, led by the Barcelona Institute for Global Health analyzed data from over 7,000 adults aged 40 to 65, with follow-up assessments conducted five years later.

The findings point toward the growing field of chrononutrition, which explores how meal timing interacts with the body’s internal clock, or circadian rhythm. Researchers suggest that eating earlier aligns better with the body’s natural metabolic processes, improving calorie burning and appetite regulation. Participants who combined an early dinner with an early breakfast and a longer overnight fast tended to maintain healthier weight levels.

However, not all fasting patterns showed benefits. A subgroup of men who practiced intermittent fasting by skipping breakfast and delaying their first meal until the afternoon did not experience lower body weight.

The study also revealed gender differences. Women generally had lower BMI, healthier dietary patterns such as closer adherence to the Mediterranean diet, and lower alcohol intake. However, they also reported poorer mental health and greater caregiving responsibilities, highlighting the complex interplay between lifestyle and health outcomes.

While the findings are promising, researchers caution that they are observational and do not prove causation. Still, the results reinforce previous evidence linking early eating patterns with reduced risks of metabolic conditions like type 2 diabetes and cardiovascular disease.

Overall, the research suggests that aligning eating habits with the body’s natural rhythms could be a simple yet effective strategy for long-term weight management.

REFERENCE: Luciana Pons-Muzzo, Rafael de Cid, Mireia Obón-Santacana, Kurt Straif, Kyriaki Papantoniou, Isabel Santonja, Manolis Kogevinas, Anna Palomar-Cros, Camille Lassale. Sex-specific chrono-nutritional patterns and association with body weight in a general population in Spain (GCAT study). International Journal of Behavioral Nutrition and Physical Activity, 2024; 21 (1) DOI: 10.1186/s12966-024-01639-x