We study the causal impact of education on chronic health conditions by exploitng two UK education
policy reforms. The first reform raised the minimum school leaving age in 1972 and affected the lower
end of the educational attainment distribution. The second reform is a combination of several policy
changes that affected the broader educational attainment distribution in the early 1990s. Results are
consistent across both reforms: an extra year of schooling has no statistically identifiable impact on
the prevalence of most chronic health conditions. The exception is that both reforms led to a
statistically significant reduction in the probability of having diabetes, and this result is robust across
model specifications. However, even with the largest survey samples available in the UK, we are
unable to statistically rule out moderate size educational effects for many of the other health conditions,
although we generally find considerably smaller effects than OLS associations suggest.