Mediterranean and Plant-Based Diets Reduce Constipation Risk in Older Adults

A large long-term study finds that Mediterranean and plant-based diets can help prevent chronic constipation in middle-aged and older adults, with benefits extending beyond fiber intake. Researchers from Mass General Brigham analyzed data from over 96,000 participants in the Nurses’ Health Study, Nurses’ Health Study II, and Health Professionals Follow-Up Study to evaluate the impact of five popular dietary patterns on gastrointestinal health.

Participants adhering to Mediterranean or plant-based diets experienced lower rates of chronic constipation, defined as symptoms lasting at least 12 weeks within a year. In contrast, those consuming Western or inflammatory diets faced a higher risk, while low-carb diets had minimal effect.

The study highlights that healthy eating patterns rich in vegetables, nuts, and unsaturated fats may support gut health in aging populations. These findings emphasize diet quality as a key factor in preventing constipation, offering practical guidance for long-term digestive wellness.

24-11-2025