My mom basically because she chose Mercola quackery and used garlic supplents instead od taking her prescribed blood thinners. End up with clots in her lungs and started the slide downhill from there.
She died at 79 a few months after her mother passed at 101.
Longevity is sometimes determined by genetics, but not always. Winston Churchill, who lived to the age of 90, did almost nothing considered healthy: smoking 20 cigars a day, drinking lots of alcohol, and being seriously overweight. His father lived to the age of 45, his mother to 67. Jack LaLanne, a well known health advocate, lived to 96, but so did Tony Bennett, who struggled with cocaine, marijuana, and alcohol. Then you have Willie Nelson and Keith Richards, neither of whom are the pictures of good health habits.
The best diets appear to be the Mediterranean and Japanese diets.