Archive for March, 2011

Oh please, not the “sex causes heart attack” story again

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Former Executive Editor, Harvard Health

Having sex (or performing any kind of physical activity) triples the risk of having a heart attack, according to a new study. But there’s more to the story. The odds of having a heart attack during sex are about 1 in one million; tripling the risk boosts it to 3 in one million. In other words, sex can cause a heart attack, but usually doesn’t. And the more a person exercises, or has sex, the lower the chances of having a heart attack during the activity.

Suicide is forever, but the stress leading up to it is often temporary

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Former Editor, Harvard Health

Many suicides are impulsive, with just minutes or an hour elapsing between the time a person decides upon suicide and when he or she commits the act. Yet the stressful events that lead to suicidal thoughts are often temporary, such as losing a job or having a romantic relationship end.

Radiation risk in Japan: an update

Peter Wehrwein

Contributor, Harvard Health

Several people who read my earlier post about radiation readings at the Fukushima Daiichi nuclear power plant in Japan pointed out that the time period over which the radiation exposure occurs is important. They’re right—the radiation dose and how long you are exposed to it determine how much radiation you are receiving. That is why […]

Radiation risk in Japan: understanding radiation measurements and putting them in perspective

Peter Wehrwein

Contributor, Harvard Health

News from Japan is full of talk about radiation risk and millisieverts. Harvard Health Letter editor Peter Wehrwein explains radiation doses and compares what’s happening in Japan with other exposures, from medical testing to Chernobyl and more.

Why Japan’s crisis causes worry, fear of radiation risk in the U.S.

Ann MacDonald

Contributor, Harvard Health

Your perception of risk depends on many factors, including whether the risk is natural or man-made, imposed or voluntary, and how it affects you and your family. Harvard Health editor Ann MacDonald explains why Japan’s radiation crisis from earthquake-damaged nuclear power plants makes us worry on many levels.

Sudden death in young athletes—can it be prevented?

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Former Executive Editor, Harvard Health

In a seven-day span, three high-school athletes died while pursuing their sports. An epidemic? No. Approximately 100 youth, high school, and college athletes die each year, many from a cardiovascular problem. The deaths renewed a hot debate among parents, coaches, and physicians: should the pre-sports checkup for competitive athletes include an electrocardiogram (ECG)?

Potassium iodide pills and prevention of thyroid cancer from Japanese nuclear power plant

Peter Wehrwein

Contributor, Harvard Health

Japanese officials are preparing to distribute potassium iodide pills to people living near the nuclear power plants crippled by last week’s earthquake. Harvard Health Letter editor Peter Wehrwein explains what these pills do and who needs them.

Thyroid cancer a hazard from radioactive iodine emitted by Japan’s failing nuclear power plants

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Former Executive Editor, Harvard Health

The steam emitted by Japan’s failing nuclear reactors contains radioactive iodine-131. People living near the reactors can get substantial doses of iodine-131 by breathing the vapor from the reactors or ingesting iodine-131 from food or water. It accumulates in the thyroid gland, and significantly increases the risk of developing thyroid cancer.

How to do CPR when the heart suddenly stops: Press hard, press fast, don’t stop

Ann MacDonald

Contributor, Harvard Health

When a fellow shopper suddenly collapsed in the grocery store, Harvard Health editor Ann MacDonald couldn’t exactly remember how to do CPR, even though she took a class some years ago. She knows now how to help when someone is having a sudden cardiac arrest. Her post offers basic instruction and resources for getting prepared.

Bridge the intention-behavior gap to lose weight and keep it off

The hardest part of trying to lose weight is the “intention-behavior gap.” That’s the disconnect between knowing what you need to do and actually doing it. A behavior chain can help you bridge the gap. This tool can help you recognize how a series of seemingly minor events can lead to an unfavorable outcome, such as overeating, and how to break the links.