Slate summarizes an article from the American Journal of Cardiology (emphasis added):
Transcendental meditation may prevent death from hypertension. In a study, hypertensive elderly people who used TM were 23 percent to 30 percent less likely to die than those who relied on other relaxation methods or drugs.
What is the difference between transcendental meditation and regular meditation? It must be pretty good if it makes people “less likely to die.”