The OmniHeart Diet – Higher Unsaturated Fat plan follows similar guidelines to the DASH diet, but supplies at least 35-37% of calories from fat, with the majority being unsaturated. Carbohydrates are limited to 48-50% of daily intake with 15% of calories coming from lean protein sources. Fat intake should mainly come from unsaturated sources. Main sources of unsaturated fat include olive oil, nuts and seeds.