Nuts Day (Nattsu no Hi)

What Is Nuts Day?

July 22 is "Nuts Day" each year. It was established by the Japan Nut Association in December 1996 (Heisei 8) and has been observed since 1997. The date comes from a wordplay on the numbers 7-2-2, which can be read as "na-t-tsu" ("nuts"). The aim is to spread the appeal of familiar nuts such as almonds, walnuts and cashews and encourage people to include them in their daily diet.

A Long History Between Humans and Nuts

Nuts were eaten by humans long before farming began.

• Food since prehistoric times: Nut shells, along with stone tools thought to have been used to crack them, have been found at ancient sites around the world. Nuts keep well and provide energy in a small amount, making them an important food for hunter-gatherers.
• Japan's Jōmon period: In Japan, walnuts, chestnuts and horse chestnuts have been found at Jōmon-period sites, showing that tree nuts were an important food.

The Nutrients in Nuts

Nuts pack a variety of nutrients into each small kernel.

• Mostly unsaturated fats: Most of the fat in nuts is unsaturated. Walnuts in particular are rich in alpha-linolenic acid, a plant-based omega-3 fatty acid.
• Vitamin E and fiber: Almonds are rich in vitamin E, and nuts also provide dietary fiber and minerals.

Fun Facts About Nuts

• Peanuts are legumes: Peanuts are not tree nuts but the seeds of a legume. After flowering, the plant pushes its developing pods into the ground — which is why the Japanese name "rakkasei" means "flower that falls and grows."
• How cashews grow: Cashew nuts grow hanging from the end of a fruit called the cashew apple.
• How much to eat: Nuts are high in calories, so it's best not to overdo it. For a snack, about one handful (around 25g) a day is often suggested as a guideline.
• Other nut days: Japan also has "Walnut Day" on September 30 and "Peanut Day" on November 11.
• Watch out for allergies: In Japan, peanuts and walnuts are among the "specified ingredients" that must be listed on food labels. If you share nuts at work, check with others first.

Tips for Enjoying Nuts Day

• Try a mix of several different nuts.
• Sprinkle nuts on salads or stir-fries to enjoy their aroma and crunch.
• Choose dry-roasted nuts with no added salt or oil.
• Crack open walnuts or pistachios in their shells by hand.

A Small Kernel for Your Everyday Table

July 22 is a day to enjoy nuts, a food that has supported human life since ancient times. Easy to carry and quick to eat, nuts make a handy snack on busy days. Why not enjoy a handful today, chewing slowly to savor them?