Its no doubt food does play a very important role in our health I've seen a man of 80 looking so fresh and young of maybe 30s and when i asked he said he maintains a very healthy diet that is good for his blood group.
Well I don't know about diet good for blood group, but generally, for such an 80 year old man it must've taken a lot of discipline and many years to maintain decent eating habit.
Our General pastor too has such good health and I think he's about 82 or 83
Yes you've got a point there it all takes self decipline which is very hard for some people to adopt