Tiffany O'Callaghan

Tiffany O'Callaghan has been a contributing health and science reporter for TIME and TIME.com since August 2007. She is based in Seattle.

Articles from Contributor

McDonald’s recalls 12 million Shrek glasses

Together with the U.S. Consumer Product Safety Commission, fast food giant McDonald’s announced the recall of roughly 12 million Shrek-themed glasses today after discovering that the designs printed on the glasses contained the harmful metal cadmium. Out of what it called “an abundance of caution,” in a statement issued today McDonald’s

Do compression clothes really impact sport performance?

Two new studies from researchers at Indiana University suggest that the new fad of athletes wearing compression clothing to enhance performance may be little more than that, a fad. In two separate inquiries analyzing the effect of compression legwear on athletic performance, Abigail Laymon and Nathan Eckert both found no evidence for

Telecommuting, flex-time decrease work-life conflict

For people whose jobs permit them to at least occasionally work from home, it may come as no surprise that a new study of more than 24,000 IBM employees in 75 different countries finds that workers who telecommute are generally able to strike a better balance between work and family life compared with those who must always schlep to the

Moving toward a breast cancer vaccine?

New research in mice may be a first step toward a breast cancer vaccine for humans. The findings, published online Sunday and scheduled to run in the June 10 issue of the journal Nature Medicine, found that mice who were genetically engineered to be at high risk for breast cancer were effectively immunized against the disease after being

CDC: public pools often harbor harmful bacteria

A new report from the Centers for Disease Control and Prevention (CDC) shows that 1 in 8 public swimming pools is in violation of health and safety codes — and that pools at day care centers and children’s facilities seem to be the most frequent offenders. The findings, based on an analysis of more than 120,000 public pool inspections

A heart attack doesn’t have to end your sex life

After surviving a heart attack, it makes sense that people want to avoid any activity that could cause their ticker to falter again. Yet, as the Associated Press reports, according to new research presented this week at a conference of the American Heart Association in Washington, D.C., because of lack of information about their risk,

A link between belly fat and dementia risk

Having excess belly fat in middle-age may increase the risk for dementia later in life, according to results of a new study published this week in the Annals of Neurology. In an analysis of 733 middle-aged men and women, researchers at the Boston University School of Medicine found that not only was higher body mass index (BMI)

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