Sugar can cause copper deficiency. Sugar interferes with absorption of calcium and magnesium. Sugar may lead to cancer of the breast, ovaries, prostate, and rectum. Sugar can cause colon cancer, with an increased risk in women. Sugar can be a risk factor in gall bladder cancer.
Sugar can increase fasting levels of blood glucose.
Sugar can weaken eyesight. Sugar raises the level of a neurotransmitter called serotonin, which can narrow blood vessels. Sugar can cause hypoglycemia. Sugar can produce an acidic stomach. Sugar can raise adrenaline levels in children.