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

Assessing gestational diabetes risks—for mom and baby

Previous diagnostic criteria for gestational diabetes were based on the risk, posed by high blood sugar levels, that pregnant women faced for developing diabetes after giving birth. And, under those criteria, rates of gestational diabetes have surged nearly 50% in the past decade, with 5% to 8% of pregnant women being diagnosed with the

Internet-savvy patient or “cyberchondriac”?

Patients who show up in their doctor’s office after having already conducted countless hours of internet research and come up with several potential self-diagnoses can prompt some mixed feelings from physicians. While some may embrace their patients’ desire to know as much as possible about their condition, others can find the task of

A way to keep brain tumors from coming back?

Glioblastoma brain tumors are notoriously difficult to fight: though they can be battled back with radiation and chemotherapy, within time they eventually manage to grow again. Yet, according to initial results of a study in mice, a technique that effectively starves the tumor of the blood supply it needs to regrow could eventually offer

Which prostate surgery is best? Depends on the surgeon

The current standard of surgery for prostate cancer patients is what is known as open radical prostatectomy, which involves a surgeon accessing and removing the cancerous prostate gland by making a standard surgical incision. Yet, in recent years, a less invasive approach, known as laparoscopic radical prostatectomy, which often uses

How singing may help stroke victims recover speech

Patients who lose the ability to speak after suffering a stroke may be able to regain their speech using a novel technique that effectively reroutes the way the brain processes language, according to research presented this past weekend at a meeting of the American Association for the Advancement of Science. The technique, known as

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