I discovered that natto is high in K2 which is lacking in vegans and which the lack of can cause frequent cavities. Natto is high in K2 besides the other possible help with reversing the symptoms of Parkinson's as I posted recently.
Here is the link I came across today. You have to check it out. askthedentist.com › vitamin-k2-benefits Vitamin K2 Benefits for Dental Health - Ask the Dentist
Wow! I can't believe I came across. Hope you all can see the connection.