Forget that can of cooldrink now, or you may have no choice later. High “normal” blood sugar could raise your Alzheimer’s risk, say scientists in Australia. In a four-year study, healthy people with the highest levels in the “normal” range (5.1 to 6.1 mmol/L ) had the most shrinkage in brain regions critical for memory. Even if you don’t have pre-diabetes or diabetes, excess sugar in your bloodstream promotes clotting, which can deprive your brain of blood and oxygen, says study author Dr Nicolas Cherbuin. In addition to cutting back on highly processed carbohydrates in general, ditch the soft drinks completely – corn syrup speeds into your bloodstream even faster