There are several factors that may explain why there are relatively few overweight women in Japan.

The traditional Japanese diet

The diet is based on fish, rice, vegetables, soy products and seafood. This diet is rich in nutrients and relatively low in calories.

Fewer processed foods. In the traditional Japanese diet, processed and high-calorie foods rich in sugar and fat are less common.

Portion sizes

Smaller portions. In Japan, it is customary to serve food in small portions, which helps control the amount of calories consumed.

Balanced diet: Japanese meals are often balanced in protein, fat and carbohydrates, which helps to maintain a normal weight.

Lifestyle and physical activity

Active lifestyle. Many Japanese walk a lot and use public transportation, which increases daily physical activity.

Popularity of sports. Sports and exercise are common among people of all ages.

Cultural and social norms

Social pressure. There is some pressure in Japanese society to maintain a slim figure. Being overweight may be perceived negatively.

Aesthetic ideals. Slimness is valued in Japan and this is reflected in fashion, media, and societal expectations.

Healthy habits from childhood

Education and upbringing. From childhood, Japanese people are taught healthy eating habits and how to maintain physical activity.

School lunches. Schools provide balanced lunches, which helps form good eating habits from an early age.

Medical system and prevention

Regular medical check-ups. In Japan, regular medical monitoring, including body mass index (BMI) measurement, is carried out to detect and prevent overweight problems at an early stage.

Promotion of healthy lifestyles. The government and medical organizations actively promote healthy lifestyles and proper nutrition.

Less stress associated with food

Conscious eating. Conscious eating is practiced in Japan, which includes eating slowly and thoughtfully, enjoying the taste and texture of food.

Social dining. Eating is often a social ritual, which promotes more conscious and moderate eating.

Genetic factors

Genetic predisposition. Genetic factors may also play a role in predisposition to overweight. Some populations may have a lower propensity for obesity.

These factors combine to help explain why there are relatively few overweight women (and men) in Japan. However, it is important to remember that each person is different, and not all Japanese follow these trends to the same degree.