Is eating too much sugar really harmful to health?

Hello, is eating too much sugar really harmful to health? Excessive consumption of white sugar is very harmful to health. White sugar is an acidic food. Eating too much acidic food will cause acid-base imbalance in the body and produce acidic constitution. Acidic constitution can easily reduce human immunity and weaken the ability of white blood cells in the body to resist external virus attacks. So eating too much sugar is likely to induce cancer. In fact, eating too much of anything will do some harm to your health. Thank you.