This project will aim to summarise the dietary patterns of the two generations of ALSPAC. The same food frequency questionnaire was administed to both the parents and their 30 year old offspring. Dietary patterns allow us to look at the diet as a whole rather than individiual foods or nutrients to provide an overall summary of dietary intake. Principal Components Analysis will be used - this method uses the existing correlations between food groups to identify those foods and gfood groups that are commonly consumed in combination.