How a 2,000-year-old eating habit could transform your health

A traditional Japanese eating habit, known as hara hachi bu, has gained attention for its potential health benefits. This habit involves stopping a meal when 80% full, a practice long observed in Okinawa, home to some of the world's healthiest and longest-living people.

The concept behind this habit comes from a Confucian teaching that encourages moderation at meals. Instead of strict dieting, it focuses on listening to the body's hunger signals and valuing food as nourishment. This approach shares ideas with mindful and intuitive eating, which can help reduce emotional overeating and improve food choices.

Studies suggest that following this habit may lower daily calorie intake, slow long-term weight gain, and reduce BMI. For men, it often leads to healthier meal patterns, with more vegetables and fewer grains. However, the practice isn't about restriction—it's about building a better relationship with food and supporting lasting health changes.

Dietitian Aisling Pigott recommends simple ways to try this habit: pausing to check hunger before eating, avoiding distractions during meals, and aiming for a comfortable level of fullness. However, the method may not suit everyone. Athletes, children, older adults, and those with certain illnesses often have higher nutritional needs that require different eating habits.

While this habit offers potential benefits like weight management and improved eating habits, its core lies in awareness and balance. The practice has helped shape the diets of some of the world's healthiest populations. But individual needs remain key when considering any change in eating habits.