Improving the quality of your diet can help restore memory function, but high sugar intake could cause persistent cognitive impairment, even after adopting a healthy diet, according to a study by researchers at the University of Technology Sydney. The results of the study, published in the scientific journal Nutritional Neuroscience, suggest that the effects of an unbalanced diet on the brain are not fully reversible, especially when the diet is high in sugar. • Memory can improve, but does not