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

Dermatologist susses sunscreen cancer risk

Since last July the U.S. Food and Drug Administration has had data from studies examining a potential correlation between retinyl palmitate, a common chemical in sunscreen, and elevated cancer risk in lab rats, the agency has been slow to interpret the findings and offer guidance to the public, charges Senator Charles Schumer (D-NY).

In ER, inexpensive drug can slow bleeding, save lives

As many as 100,000 deaths could be prevented each year with the increased use of an inexpensive drug, according to a new study from researchers at the London School of Hygiene and Tropical Medicine. In the analysis of more than 20,000 seriously injured patients from 40 different countries, researchers found deaths due to excessive blood

Are doctors screening for cervical cancer too often?

Though current cervical cancer screening guidelines generally recommend that women ages 30 and older get screened — either using a traditional pap smear or a complement of a pap smear and human papillomavirus testing — every 2 to 3 years instead of annually, a new survey published this week in the Archives of Internal Medicine finds

Assisted reproduction increases congenital defect risk

In new research presented today at the annual meeting of the European Society of Human Genetics in Sweden, French geneticist Dr. Géraldine Viot of Maternité Port Royal hospital in Paris, highlights the elevated risk for congenital defects for children born using assisted reproductive technologies (ART), and stresses the need for

Childhood obesity: moms’ work schedule a factor?

New research published in the American Journal of Epidemiology and highlighted by Reuters suggests that the increasing prevalence of moms holding down full-time jobs may be a contributing factor in the childhood obesity epidemic. In an effort to determine what factors may be driving childhood obesity, researchers from University College

Widely used cancer drug may cause kidney damage

A new analysis published in the Journal of the American Society of Nephrology finds that a drug commonly used for cancer treatment may cause kidney damage in some patients. The drug, bevacizumab, is approved by the U.S. Food and Drug Administration for treating glioblastoma brain tumors, metastasized breast cancer and other forms of

Do men suffer more than women after breakups?

While women are often characterized as the more emotionally sensitive of the sexes, new research published in the Journal of Health and Social Behavior suggests that, when it comes to the heartache following a failed romance, men may actually suffer more than women.

The research, conducted by sociologists at Wake Forest University

Doctors should ask patients about texting-while-driving

Doctors should talk to patients about the risks of distracted driving, just as they discuss the dangers of smoking and unprotected sex, writes Dr. Amy N. Ship, an internist at Beth Israel Deaconess Medical Center, in the June 10 issue of the New England Journal of Medicine. As more states pass laws banning talking on a cell phone or

When too much screen time can be a pain

For some teens, more time spent in front of the TV or computer screen may mean a greater likelihood for recurring headache and backache, according to new research published this week in the journal BMC Public Health. For the study, a team of researchers from Finland, Norway, Iceland, Denmark and Sweden analyzed TV, computer and video

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