Too Much Sugar is Bad for Your Heart
When you eat or drink too much sugar, the extra insulin in your bloodstream can affect your arteries all over your body. It causes their walls to get inflamed, grow thicker than normal and more stiff, this stresses your heart and damages it over time. This can lead to heart disease, like heart failure, heart attacks, and strokes.
Research also suggests that eating less sugar can help lower blood pressure, a major risk factor for heart disease. Plus, people who eat a lot of added sugar (where at least 25% of their calories comes from added sugar) are twice as likely to die of heart disease as those whose diets include less than 10% of total calories from added sugar.