The Trinity-Ulster-Department of Agriculture (TUDA) study was launched in 2008 and aims to: 1. Provide a better understanding of how food, nutrition, genetics, health, lifestyle and environmental factors can impact on diseases of ageing, with a particular emphasis on cardiovascular disease, dementia and osteoporosis. 2. Generate evidence to influence public health policy and develop strategies aimed at promoting healthier ageing through improved nutrition. 3. Generate opportunities for functiona