A new study has found that a certain kind of meditation could reverse brain aging by an average of almost six years, while also potentially reducing risk of Alzheimer's and dementia. Referring to meditation, alongside high quality sleep and diet, Dr. Balachundhar Subramaniam, one of the authors of the study and a professor of anesthesia at Harvard Medical School, Massachusetts, told Newsweek : "The more you do it from early on, you can definitely delay, reverse, or reduce the severity of the