Are there any natural ways to lower your rdw-cv to a normal number? and are there ways to naturally prevent diabetes?

At your age, high RDW-CV is usually due to iron deficiency anemia from more than average menstrual blood loss. To correct that naturally, you should eat foods and vegetables with high iron content such as spinach, broccoli, legumes, red meat, legumes, etc. (you can google foods with high iron). Only can type 2 DM be prevented by maintaining ideal body weight, low calories diet and exercise.