Cooking with sesame oil in place of other edible oils appears to help reduce high blood pressure and lower the amount of medication needed to control hypertension, researchers reported today at the XVth Scientific Meeting of the Inter-American Society of Hypertension. The meeting is co-sponsored by the American Heart Association’s Council for High Blood Pressure Research.
Men’s higher tolerance for pain is not just macho posturing but has a physiological underpinning, suggests a study in which subjects were given a monetary incentive to keep their hand submerged in ice water. Sex differences in pain perception have been noted in multiple studies, with women typically displaying lower pain tolerance than men, but it is unknown whether the mechanisms underlying these differences are hormonal, genetic or psychosocial in origin. For example, some researchers have suggested that men are more motivated to express a tolerance for pain because masculine stereotyping encourages it, while feminine stereotyping encourages pain expression and lower pain tolerance.
Protamine, a drug used for more than 40 years immediately after coronary artery bypass surgery to return thinned blood to its normal state, has been shown to have more potential negative side effects than previously appreciated, according to researchers. Although they found that small blood pressure changes that often occur with protamine?s use are associated with increased mortality, they do not advocate any change in the clinical use of the drug. However, they do emphasize that their findings should spur development of alternatives for protamine.
Forest dieback in the northeastern United States and neighboring areas in Canada has been more frequent, more persistent, and more severe during recent decades, research has shown. Now scientists have found springtime temperature swings have intensified in that region during the same period. A new study links these escalating freeze-thaw episodes, which are known to harm trees, to an atmospheric pressure imbalance over the North Atlantic.
A person age 40 or older has a one-in-five chance of developing congestive heart failure, according to a study in today’s rapid access issue of Circulation: Journal of the American Heart Association. The study authors also reported that lifetime risk of developing heart failure doubles for people who have high blood pressure.