For all the diabetics here's a bad news: Diabetes can actually mess with your brain. We know that diabetes can impact your whole body but this revelation has come as a shocker. Recent studies have linked type 2 diabetes to a slowdown in cognitive functioning and also linked it to Alzheimer's disease. According to a study named 'The Final Frontier: How Does Diabetes Affect the Brain?' published in the journal Diabetes your quality of brain is affected heavily due to diabetes. ...it has become apparent that diabetes can alter the function and structure in tissues not typically associated with complications