No. In fact, keto diets are excellent for improving measurements of cardiovascular health, such as triglycerides, blood pressure, and large, fluffy LDL cholesterol particles. Keto allows for eating butter, egg yolks, red meat, and other foods high in saturated fat and cholesterol, but the cholesterol and fat in your food has very little effect on the fact and cholesterol in your blood. Two of the biggest risk factors for heart disease are type 2 diabetes and insulin resistance — and keto is dynamite for reversing both of these.