Medically reviewed by Dr. Shani Saks, D.O. on Sept. 12, 2023 An Okinawan-based Nordic diet effectively reduced gingival bleeding on probing scores and HbA1c levels and decreased the serum levels of certain cytokines compared to a standard hospital care diet. The Okinawan-based Nordic diet (OBND) is rich in vitamins, minerals, fiber, and proteins and low in carbohydrates...