Chewing Rate and Satiety

How fast you eat matters more than most people realise. When you eat slowly and chew your food well, you give your brain time — about 20 minutes — to receive the “fullness” signals from your stomach. Studies show that people who eat more slowly tend to consume fewer calories at a meal while feeling just as satisfied. It is a simple, cost-free habit that supports lasting weight management.

Chewing rate and eating speed influence satiety through multiple physiological pathways. Mastication increases the oro-sensory exposure time, enhancing cephalic-phase insulin release and promoting earlier satiety signalling via vagal afferents. Slower eating is associated with lower postprandial ghrelin concentrations and higher levels of anorexigenic peptides such as PYY and GLP-1. A systematic review of 23 observational studies found that faster eating rate was consistently associated with higher BMI and a 2× increased risk of obesity. Interventional studies confirm that reducing eating rate by approximately 50% decreases ad libitum energy intake by 10–15% per meal.

This simple behavioural strategy costs nothing and can be practised at every meal. When combined with the medical and nutritional guidance provided by Dr. Joseph Wang at Accord Medical, mindful eating habits like slower chewing become powerful, sustainable tools in your weight management journey.