Nun Study

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Gynaecology An exhaustive epidemiological study by F. Gagnon based on 3,280 Canadian nuns, which found no cancers of the uterine cervix, confirming Rigoni-Stern’s 1842 observation that cervical cancer is linked to sexual activity.

Neurology A study in which linguistic ability in early life and cognitive function and Alzheimer’s disease in late life were compared in a religious order—the School Sisters of Notre Dame
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The much-cited Nun study,6 which followed 678 Catholic nuns over a number of years, is one exception.
Lon White, MD, MPH, a neuroepidemiologist, and his team from the University of Hawaii and the Veterans Affairs-affiliated Pacific Health Research and Education Institute analyzed studies involving more than 1,100 people who had participated in the Nun Study or the Honolulu-Asia Aging Study.
Snowdon's 2001 book, Aging With Grace: What the Nun Study Teaches Us About Leading Longer, Healthier, and More Meaningful Lives, was based on that research and drew immense attention to Alzheimer's disease.
The classical case is that of Sister Bernadette of the Nun Study.
Tyas and her colleagues used the ongoing Nun Study as the basis of their analysis.
Participants had been enrolled into the Nun Study - an ongoing health investigation involving Roman Catholic nuns in the US.
A particularly powerful study along those lines is called either the Nun study or the Religious Orders study, in which individuals have been in a known and relatively controlled environment their entire lives.
The Nun Study (JAMA 277[10]:813-17, 1997) is the classic study on possible relations between strokes and AD.
We suggest that the contrary findings of the nun study reflect the operation of factors that determined the nuns' youthful and subsequent levels of ability before they wrote their autobiographical notes on induction to their order.
Dr David Snowdon, who headed the 15-year programme dubbed The Nun Study, said it has given him clues to the cause of Alzeimher's.
Although the nun study doesn't support this theory, Snowdon isn't ready to rule it out.
They found in their subjects from the Honolulu Aging Study and the Nun Study (average age 88 and 90 years, respectively) that an individual's dementia is the result of multiple pathologies, including Alzheimer's, vascular disease, Lewy body disease, and hippocampal sclerosis, rather than a single cause.