Why are Japanese people so slim?

2 min readNov 24, 2022


R’s KOSO cleanse

Obesity is a worldwide health crisis that is affecting some nations much more than others. For example, according to the World Health Organization, the rate of obesity in Japan is only 4.4%. In comparison, it is as low as 37% in the United State and around 20% in European countries.

Samurai matcha shares his ideas about why Japanese people are so slim in this video.

He explains that it is not genes that are keeping the obesity rate low, but it is mostly because of the Japanese diet and culture.

In fact, 34% of Japanese people have an obesity gene called β3-AR gene which makes it difficult to burn fats. In North America, only 8% of the population has this gene.

But because of their lifestyles, this gene does not impact their weight very much.

The reasons why Japanese people are slim

1. Japanese people eat smaller portions

The serving size is smaller in Japan than it is in the United State. Therefore, Japanese people consume fewer calories. When you go to stores and restaurants to get some food or drinks, the portion size is often smaller than what is offered in the United State. For example, the small size of McDonald’s in Japan is medium size in the United States.

2. Japanese people eat fermented foods daily.

The gut imbalance can lead to an increase in stress and anxiety, sleep disorders, unstable blood sugar, hormonal imbalance, and nutrient deficiencies, which can be reasons for food cravings and overeating.

Adding fermented foods and drinks is a delicious and easy way to help promote gut bacteria. This could help reduce food cravings and overeating.

Japan has a long history of making fermented foods like miso, soy sauce, natto, pickles, and sake. Fermented foods are essential ingredients in the dietary habits of Japanese people. You can easily get fermented foods in Japan. Samurai matcha tried R’s KOSO for 30 days. Not only did he lose some weight, but he also felt like he had more energy. He also noticed that he didn’t have constipation for 30 days.

Are you being skeptical? Time to try R’s KOSO!

Let’s get started!






Japanese Prebiotic Superfood Drink & Cleanse. KOSO is Made from 100+ fruits & veggies. Koso Cleanse is The Leading Way To Improve Your Gut Health & Immunity.