Your brain is shrinking, costing you memories and mental sharpness. Brain shrinkage is closely related to symptoms of ageing, including mental decline, cardiovascular disease, obesity, diabetes, and even poor sleep habits. You can prevent brain shrinkage by adopting healthy lifestyle habits that boost your brain’s vulnerabilities. For example, lowering blood pressure, lowering your blood sugar, improving sleep can help to stop brain shrinkage and improve your chances for a long, mentally fit life.