In this paper I exploit a reform that expanded UK post-compulsory education during the 1980s and 1990s to examine the effect of education on health. The expansion resulted in a rapid increase in education over the whole education distribution. I find evidence that education had an effect in reducing body mass index, waist circumference and weight. For other health measures (self-reported general health, long term or limiting illnesses), blood pressure and health behaviours (smoking and drinking) there were small to no improvements. There is suggestive evidence that the mechanisms driving these results are improvements in labour market and social status.