The next time you're offered a choice between Earl Grey and green tea, you might want to go green.

A new study shows that the beverage, which is more popular in Eastern cultures, can protect heart arteries by keeping them flexible and relaxed, and therefore better able to withstand the ups and downs of constant changes in blood pressure.

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THURSDAY, July 3 (HealthDay News) -- Doing mental or physical work while exhausted may harm your health, a new study shows.

Researchers at the University of Alabama at Birmingham found that fatigued people had bigger spikes in blood pressure than well-rested people while doing a memorization test.

MONDAY, June 30 (HealthDay News) -- A newly discovered molecular malfunction may explain the development of high blood pressure, diabetes and immune problems, researchers report.

Rogue versions of enzymes known as proteases roam the body, clipping off working segments of the receptors that allow insulin to enter cells and do its job, according to a report in the June 30 online issue of Hypertension.

That uncontrolled enzymatic activity also reduces the immune system's response to infection and raises blood pressure, the report noted.

International Blood Doping Tests May Miss Cheaters

byBy Alan Mozes
HealthDay Reporter

THURSDAY, June 26 (HealthDay News) -- Tests designed to detect the illegal presence of a performance-enhancing drug that boosts blood oxygen levels in elite athletes are likely to miss those who decide to cheat, a new study claims.

WEDNESDAY, June 25 (HealthDay News) -- Being well-off and well-educated may improve your chances of surviving a heart attack, according to new report.

Researchers at the Mayo Clinic, studying medical records of heart attack patients from its home base of Olmsted County, Minn., report that those with lower incomes and less education were more likely to die after the attack than their more affluent, educated counterparts.