I'm a nutritionist from Japan, home to the world's longest-living people—9 Costco foods I always trust

Growing up in Japan, home to some of the world's longest-living people, I fell in love with traditional Japanese food at a young age. My passion for clean and healthy eating is what inspired me to be a nutritionist.

My diet has always been centered around nutritious, longevity-fueling and environmentally-friendly foods. Now living in the U.S., I often get my groceries at local markets or organic farms. But when I'm looking to save money and stock up on healthy goods, I send my husband on his favorite errand: a solo trip to Costco.

Here are the Costco items I trust and can't live without:

I've been eating tofu since I was a baby, and it's one thing you'll always find in my fridge. We usually buy two four-pack boxes of organic tofu at Costco, sometimes more.

There are so many dishes you can make! And it's really good for you: It's high in protein and provides good fats and a wide variety of vitamins and minerals. Studies have found that tofu can benefit heart health and help reduce the risk of some cancers.

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Edamame is another must-have soy product in our house. At Costco, you can get a bag of 12 individually wrapped 8-ounce portions.

This is my most-recommended snack to friends and family. Just microwave a bag for two minutes and enjoy it as a low-calorie, high-protein snack. Edamame is also rich in fiber, antioxidants and vitamin K.

Goji berries have been used as ancient medicine in East Asia for thousands of years. I add them to many dishes, like miso soup, salad, jams and chia pudding. They add natural sweetness and texture.

A fourth-cup of goji berries has only 100 calories, 4 grams of protein and fiber, and 800 milligrams of potassium — more than