Obtaining observational evidence by performing statistical analyses of existing data previously collected in five prospective cohort studies conducted among older adults (European as well as third countries Canada and USA) and four nutrition surveys conducted among older adults throughout Europe. These cohorts include the Longitudinal Aging Study Amsterdam (LASA, the Netherlands); the Age, Gene/Environment Susceptibility-Reykjavik Study (AGES, Iceland); the Newcastle 85+ Study (UK); the Quebec Longitudinal Study on Nutrition and Aging (NuAge, Canada); and the Health, Aging and Body Composition Study (HABC, USA). At the moment analyses plan proposal for the cohort data and survey data are written and discussed by the researchers in order to determine the dietary characteristics and daily food intake patterns of older adults by appetite and malnutrition strata (low protein intake). Besides in work package 2 the focus is on daily physical activity and sedentary behavior patterns, the first aim is to determine daily physical activity, sedentary behavior and nap/sleep patterns of older adults. Analyses plans are written and the plan is to harmonize data across cohorts. Next to the observational analyses the preparations for a quantitative survey in five countries across Europe (UK, Finland, The Netherlands, Spain and Poland; n=± 350 per country) started. A mixed administration method will be considered, e.g. computer-assisted personal interviewing, computer-assisted web interviewing and Paper-and-Pencil Interviewing, etc. The questionnaire will take about 35 minutes to complete. The participants should be 70 years old and without cognitive impairment, as some questions require thinking or reflection upon their habits or preference. The main objective of the survey is to quantify specific attitudes and preferences of older adults, as food consumers, with regard to dietary and physical activity characteristics.