A pack of natto (fermented Japanese soybeans) a day keeps the death away according to study soranews24.com

In the wide world of Japanese cuisine, there are few dishes as divisive as natto, which is basically a wad of fermented soy beans.
It was once notorious for its foul smell, but recently technological advances have enabled some producers to reduce its odor considerably.
Based on a follow-up survey they determined that men and women who consumed about 50 grams (1.8 ounces) of fermented soy enjoyed a 10-percent lower mortality rate than those with other dietary habits.
▼ If that’s the case then competitive eater Yuka Kinoshita may achieve immortalityThe good news is that “fermented soy” can also include the infinitely more delicious miso.
None of those really make natto any more tolerable, but can help liven up the daily suffering, because it’s probably going to last a long time.