B cube is a new generation cohort to study the determinants and natural history of brain aging, using molecular epidemiology, in a representative sample (N=2000) of the general population from the age of 55 (the approximate age of onset of the first cognitive disorders and a target population particularly receptive to prevention messages). Special interest will be given to nutrition, a promising environmental exposure for prevention.
live in Bordeaux metropolitan area,
be between 55 and 80 years old (included),
selected in terms of socioeconomic level, according to a sampling strategy by age groups and income categories representative of the general population between 55 and 80 years of age
be affiliated with the social security system,
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