Hara hachi bu: the mindful eating habit with health benefits

A Japanese '80% full' eating practice is gaining attention - not as a diet, but as a gentler way to reconnect with hunger cues, improve digestion and avoid overeating in a distracted world. By Aisling Pigott

- Aisling Pigott

Recently, hara hachi bu has been gaining attention as a strategy for weight loss.

But although hara hachi bu might emphasise eating in moderation and stopping before you're full, it shouldn't really be seen as a method of dietary restriction. Rather, it represents a way of eating that can help us learn to have awareness and gratitude while slowing down at mealtimes.

Research on hara hachi bu is limited. Previous studies have evaluated the overall dietary patterns of those living in regions where this eating philosophy is more commonplace, not the “80% rule” in isolation. However, the available evidence does suggest hara hachi bu can reduce total daily calorie intake.

It’s also associated with lower long-term weight gain and lower average body mass index (BMI). The practice also aligns with healthier meal-pattern choices in men, with participants choosing to eat more vegetables at mealtimes and fewer grains when following hara hachi bu.

Hara hachi bu shares many principles with the concepts of mindful eating or intuitive eating. These non-diet, awareness-based approaches encourage a stronger connection with internal hunger and satiety cues.

Research shows that both approaches can also help reduce emotional eating and enhance overall diet quality. It may also have many advantages that go beyond losing weight.