Understanding the human body is a team effort. That's where the Yachtel group comes in.

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This is Scientific Americans' 60-second science. I'm Steve Merski. Got a minute?

One of the things we know for sure in the United States is that a gun in the home increases the likelihood that someone in the home will die, a violent death.

From gun accidents, from a woman being murdered by a man in an intimate part in a violence situation,

and particularly by suicide.

David Heminway, he's the director of the Harvard Injury Control Research Center.

He's also a professor of health policy and management at the Harvard T.H. Chan School of Public

Health. The gun violence discussion often seems to give short shrift to suicide, even though

more than 60% of the approximately 32,000 annual U.S. firearms deaths are suicides.

Heminway spoke January 26th that a Harvard School of Public Health Forum on gun violence

as a public health issue.

The evidence is overwhelming from case control studies and ecological studies. For example,

why do we have very different suicide rates across cities, across states, across regions

in the United States to explain the differences in suicide rates across states?

Turns out it's not well explained at all by differences in mental health. It's not well explained at all by differences in mental health.

It's not well explained at all by differences in the number of psychiatrists.

It's not even explained by differences in suicide ideation among the population or even suicide

attempts.

...