New
research out of Japan shows a potential link between male
baldness and an increased risk for coronary heart disease.
But it only affects men who are balding on top. Those with a
receding hairline are not at risk, the researchers reported.
The findings stem from an analysis of six published studies
on hair loss and heart health that involved approximately
37,000 men. And although the researchers admitted the small
study size was a limitation, they reported that men whose
baldness affected the crown on their head faced a 32 percent
to 84 percent increase in the risk of developing heart
disease compared to men with a full head of hair or a
receding hairline. Study lead author of the department of
diabetes and metabolic diseases at the University of Tokyo's
Graduate School of Medicine, in Japan, reported his findings
in the current issue of the journal BMJ Open and called for
more research on the topic. Although the research review
found an association between baldness and heart disease
risk, it did not prove a cause-and-effect link. Male pattern
baldness (technically referred to as "androgenetic
alopecia") affects up to 40 percent of adult men and is the
most common type of hair loss, the researchers reported. By
age 80, about four in five men will experience this form of
baldness. To explore the link to heart disease, the
researchers analyzed databases covering the period 1950
through 2012. Out of 850 related investigations, they
selected six studies, all published between 1993 and 2008 in
the United States, Denmark or Croatia. In the three studies
that tracked patients for a minimum of 11 years, the
research showed that, overall, balding men face a 33 percent
greater risk for heart disease than other men, and those
between 55 and 60 years old faced an even higher risk (44
percent). The other three studies, comparing the cardiac
health of balding men to non-balding men, showed a 70
percent bump in heart disease risk among the balding group,
and an 84 percent risk for younger balding men. What's more,
a balding man's heart disease risk appeared to be dependent
on the severity of his hair loss, with more severe loss
translating into greater risk, the studies showed. Research
team said the driving mechanism behind the connection is
unknown, but they theorized that baldness could be a marker
for insulin resistance, chronic inflammation or an increased
sensitivity to testosterone, all of which are factors in the
onset of heart disease. Regardless, the lead author said,
balding men should do what all men should do when it comes
to controlling heart disease risk. "I recommend adapting a
heart-healthy lifestyle that includes a low-fat diet,
exercise and less stress [in order to mitigate against]
classical coronary risk factors," such as age, high blood
pressure, blood lipid disruption and a history of smoking,
he said. |