Heart Disorders More Condition_symptoms What Is The Best Diet For People With Heart Disease,stroke And Blood Disorders?

What is the best diet for people with heart disease,stroke and blood disorders? - heart disorders more condition_symptoms

I was thinking of changing my vegetarian diet because of my personal history and family health, including cardiovascular diseases and diseases of the blood. My friend is overweight and suffers from heart problems and diabetes. Which diet is best for us?