
Don't Just Take Our Word For It
A leaf that’s only harvested once a year.
In Japan, persimmon leaf tea — kaki-no-ha cha — has been a quiet tradition for generations. Not a trend. Not a fad. Something grandmothers made every morning without thinking twice about it.
Japan has over 100,000 centenarians. Heart disease mortality 67% lower in men, 75% lower in women compared to the United States. Researchers have spent decades trying to figure out why.
The answer wasn’t in the persimmon fruit. It was in the leaf.
The leaf contains a polyphenol profile that supports LDL receptor activity in the liver — helping your body pull bad cholesterol out of the bloodstream on its own.
But here’s what makes it rare: persimmon leaves can only be harvested once a year. There’s a narrow window in Osaka when the polyphenol concentration in the leaf peaks. Miss it, and you wait another year.
That’s why most supplement companies have never touched it. It doesn’t scale the way they want it to.
Arashi uses only the leaf. Harvested once a year in Osaka, Japan.
300mg per softgel. One a day.
Why Japan’s best-kept secret never left the country.
For centuries, the Japanese have done something most Americans have never heard of.
Every morning, in homes across Osaka, grandmothers boil persimmon leaves into a light, golden tea. They call it kaki-no-ha cha. It’s not sold in health food stores. It’s not trending on social media. It’s just something they’ve always done.
Meanwhile, Japan has the longest life expectancy on Earth. Over 100,000 centenarians. Heart disease mortality 67% lower in men and 75% lower in women compared to the United States.
And here’s the part that keeps researchers up at night: when Japanese families move to the US and adopt a Western diet, their heart disease risk climbs to American levels within a single generation.
It’s not genetics. It’s something they stopped doing.
The tea never made it into Western medicine because it couldn’t be patented. No patent means no profit. No profit means no research funding. No research funding means no one in the US ever heard of it.
Until now.
Arashi takes the same persimmon leaf — harvested once a year in Osaka — and puts it in a single daily softgel. No tea ceremony required.