What Is the Okinawa Diet and Its Benefits?

The Okinawa diet is named after Okinawa, the southernmost prefecture of Japan. Okinawa Island is the largest of the Ryukyu Islands, which lie between the East China Sea and the Philippine Sea. Okinawa is one of the five regions of the world known as "blue zones," where people tend to live long, healthy lives. Okinawans’ long lives are thought to come from a mix of genes, environment and lifestyle. Diet is one of the most important parts of that lifestyle.

Overview

The Okinawa diet is the traditional eating pattern of the people of this Japanese island.

Okinawa Diet

According to a review in the Journal of the American College of Nutrition, the traditional Okinawan diet is low in calories but rich in nutrients. It is high in carbohydrates and very low in fat, especially saturated fat.

The plate is mostly vegetables, especially sweet potatoes, and soy foods, with smaller amounts of rice, noodles and fish.

Portion To Take:

The traditional diet was mostly starchy vegetables and grains, with very little protein and fat.

Today, Okinawa’s diet has modernized, with more Western foods since World War II. A 2025 scoping review of blue zones notes that Okinawa’s longevity edge over the rest of Japan has narrowed in recent decades.

Okinawans traditionally saw food as medicine and used herbs and spices such as turmeric. Daily physical activity was also part of their lifestyle.

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Because it is filling but low in calories, the Okinawa diet may help with weight control. It is also full of nutrients. Here are foods that are eaten and limited in the traditional Okinawa diet.

Foods to eat

The diet focuses on whole, nutrient-rich, antioxidant-rich foods. Nutrients are essential for the body to work properly, and antioxidants help protect cells from damage.

It includes rice, but less than in mainland Japan. Sweet potatoes, soy and fiber-rich vegetables are the main sources of calories.

Vegetables, the largest part of the diet: sweet potato, seaweed, bamboo shoots, daikon radish, bitter melon, cabbage, carrots, Chinese okra, pumpkin and green papaya.
Grains: millet, wheat, rice and noodles.
Soy foods: tofu, miso and edamame.
Meat and seafood, in small amounts: mostly white fish and seafood, with occasional pork.
Other foods in small amounts: alcohol, tea, spices and dashi (broth).
Jasmine tea is a common drink, and antioxidant-rich spices like turmeric are used often. This traditional diet is very different from the Western diet, and some of its foods can be hard to find elsewhere.

Foods to Avoid:

Most meats, such as beef, poultry and processed meats.
Animal products, such as eggs, dairy, cheese, milk, etc.
Processed food like refined sugars, grains, breakfast items, etc.
[Legumes](https://en.wikipedia.org/wiki/Legume#:~:text=A%20legume%20(%2F%CB%88l%C9%9B,as%20soil%2Denhancing%20green%20manure.) other than soybeans.
Most fruits, nuts and seeds, which were eaten only in small amounts.

The Okinawa diet is flexible, and you can adjust portions to your calorie needs.

Health benefits of the Okinawa diet:

The Okinawa diet may offer several benefits:

Long life:

The best-known benefit linked to the Okinawa diet is long life. Okinawa has long been known for high life expectancy and many centenarians.

Diet is only one part of that picture, along with genes, activity and social life. The same review found there is still not enough evidence to prove that the diet itself causes longer life.
Reduced risk of chronic diseases

Diets similar to the traditional Okinawan diet are linked to a lower risk of chronic diseases, such as heart disease, some cancers and type 2 diabetes. It shares many features with the Mediterranean and DASH diets.

Sweet potatoes are rich in fiber, potassium and vitamin A (from beta-carotene). Their fiber can help slow the rise in blood sugar, and their carotenoids act as antioxidants.

Drawbacks:

As it has many benefits, it also has some drawbacks.

Fairly restrictive

It limits some healthy foods, which can make it hard to follow. It includes only small amounts of fruits, nuts, seeds and dairy, so you may need to plan for enough calcium.
High sodium

Some traditional foods, such as miso, soy sauce and pickled vegetables, can be high in sodium. That is a concern for people with high blood pressure, who may need lower-sodium versions.

HP Thoughts: Regardless of your chosen diet method, you have to remember that you’re doing this to place your body, health, and well-being in a much better condition. Learn how to optimize your diet: Optimizing Your Diet.

Conclusion:

The Okinawa diet is the traditional eating pattern of Okinawa, Japan. It focuses on vegetables, especially sweet potatoes, soy foods and small amounts of fish. It limits saturated fat, sugar and processed food.

It is linked to long life and lower disease risk, but it can be high in sodium. If you have a health condition or take medicines, talk with your doctor or a registered dietitian before changing your diet.