Childhood circumstances linked to health in later life
Socioeconomic position in childhood and adulthood and
insulin resistance: cross sectional survey using data from British womens heart
and health study BMJ Volume 325, pp 805-7
Poor social circumstances in adulthood have been known for some time to
increase heart disease risk but less attention has been paid to earlier life
circumstances. A study in this week's BMJ finds that adverse social
circumstances in childhood, as well as adulthood, are strongly associated with
increased risk of insulin resistance, and other heart disease risk factors.
Most people know that the hormone insulin is important for health. But the
commonest type of diabetes (type 2 diabetes), which affects about 4% of the
British public, occurs because these people are resistant to the action of
insulin.
Researchers at the University of Bristol investigated the associations
between social class in childhood and adulthood and insulin resistance in over
4,000 women aged 60-79 years.
They found that belonging to a manual social class in childhood and in
adulthood was associated with increased insulin resistance, dyslipidaemia, and
obesity. The association between childhood social class and insulin resistance
was stronger than that between adult social class and insulin resistance.
Women who were in manual social classes as children were still at increased
risk of insulin resistance and other risk factors as adults even if they had
moved up into non-manual social classes as adults. Childhood factors such as
poor nutrition are the most likely reasons for these findings.
The results support the idea that poor social circumstances in childhood lead
to insulin resistance, with these risk factors tracking through childhood
resulting in increased risk of cardiovascular disease in later life.
These findings highlight the importance of a life course approach to the
prevention of cardiovascular disease and reducing socioeconomic inequalities in
cardiovascular disease, they conclude.
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