Hi Dolores,
Thanks for verbalizing what many of us (certainly including me) think of.
Re: However, EG, I was horrified to read somewhere that a good diet and exercise program will postpone the alzheimers not eliminate it if you are going to get it. That's certainly true for what most people and even most authorities think of, as a "good diet and exercise program". Trim the fat off your steak, and trim the skin off your chicken. Such a "good" diet is too moderate to help most heart patients, most diabetics, and likely most people who would get alzheimers. But what about our program, where we actually try to be extreme, or extremely healthy in our program. Dr. Esselstyn demonstrated the best heart disease results ever medically documented. He met with his patients weekly for the first 5 years, and gave them a blood cholesterol check every 2 weeks. His program allowed no cheating. And his program was very very successful. 17 of 18 patients had no cardiac events for 20 years, as opposed to 48 events in the 8 years before his diet. 4 of his patients were given less than a year to live. (One of those 4 lived 8 years, and had extensive heart damage at the start of Esselstyn's study.)
How successful would Esselstyn or Fuhrman be at preventing alzheimers or dimentia? I am absolutely confident these programs are very helpful. Could they do fully as well for the brain as for heart disease? Gee, I would like to think so, but we actually don't know. Alzheimers develops so slowly, and is hard to detect. What's the alternative? So I work to be scrawny, although strong and fit. High nutrient, etc etc. Any better ideas? I believe it will allow me to live out my years with the best health and happiness, as allowed by my heredity.
If you want a guarantee, buy a used car.

Best regards, EngineerGuy