Most books about science operate mostly from the head. This book also has a heart, and gives you a close human connection with the people being examined. 678 elderly nuns from the order, School Sisters of Notre Dame, are being studied to understand what factors helps explain their long life, and ability to remain mentally and physically active at advanced ages. The results of this work will undoubtedly focus future scientific research into the most productive areas for extending and improving the quality of human life.
Professor Snowdon is an epidmiologist who has had great success with studying religious communities. Because of the similar environments and habits involved, these communities can more clearly demonstrate the factors that favor or disfavor disease. He has also done work with Seventh Day Adventists and diet, for example.
The School Sisters of Notre Dame is a teaching order, and its members are highly educated. For example, of the elderly nuns studied 85 percent held bachelor's degrees and 45 percent master's degrees. This is in sharp contrast with the rarity of these degrees in the general population among women of similar ages. Obviously, they have also led a life of strenuous service to God and to teaching others.
The study benefits from many other unique qualities. Each nun also wrote an autobiography when she was young, and just joining the order. As a result, it is possible to go back and study those writings. The sisters have also generously agreed to donate their brains for research when they die. This means that the physical brains can be compared to the results of cognitive and physical tests to see what the causes of mental and physical dysfunctions might be.
Early in the study, Professor Snowdon also gained another advantage. He was encouraged to develop a relationship with the sisters, rather than just to study them. The book's many examples reflect his personal connection and observation of their aging experiences.
Although the study is continuing, it has already yielded some remarkable insights. In the area of Alzheimer's disease, the research has shown that higher education and better vocabulary and reading comprehension skills when young help prevent or delay the disease. In brains equally ridden with distortions of the disease, functionality of the person varies a lot due to those factors. You are advised to read to your children as a way to help them avoid Alzheimer's disease when they are older. Brains of those with Alzheimer's disease show plaques and tangles. The study suggests that the tangles are important, and the plaques less so. Keeping blood pressure under control to avoid stroke also helps to stave off Alzheimer's disease.
Interestingly, more education and greater mental capacity when young are also predictive of longevity.
The book also looks at the genetic impacts on Alzheimer's and seems to suggest that these can be overcome to some extent by education and mental development.
There are also diet suggestions, like getting plenty of folic acid (found particularly in cooked tomatoes).
The stories of the individual nuns will stay with you for a long time. These are very admirable people, and I learned a lot from reading about their lives. If you are like me, you will be saddened to think about the sister who had Alzheimer's who feared that she would forget God. You will also be saddened by the sister who was incorrectly diagnosed as having Alzheimer's and lived four very unpleasant years with this misapprehension.
There's good news here if you do live a long time. "The older you get the healthier you've been." So after around 85, many sources of health risk don't seem to get any worse. The stories of active minds and bodies over 100 will inspire you.
After you finish reading this book, I suggest that you locate some elderly people (ideally over 90) and get them to tell you about their lives. In that connection, you will also receive much inspiration for the potential you have yet to fulfill, and help make someone's life more meaningful, too.
May you become more filled with grace, as you age!