Studies of 'context' are increasingly widespread. These studies often becom
e entrenched in methodological debates rather than being conceptually satis
fying. We suggest that part of the problem lies in an inappropriate use of
'classic' methods used by epidemiologists to study context and that it may
be useful to study, instead, the relationship between agency (the ability f
or people to deploy a range of causal powers), practices (the activities th
at make and transform the world we live in) and social structure (the rules
and resources in society). We utilise two examples from the current litera
ture to illustrate these problems: the study of lifestyles and social inequ
alities in disease outcomes. We develop the notion of collective lifestyles
as a tentative solution, inspired by Pierre Bourdieu's theory of social ac
tion, Anthony Giddens' structuration theory and Amartya Sen's capability th
eory. Collective lifestyles are defined as an expression of a shared way of
relating and acting in a given environment. It is proposed that context is
created by relationships between people.