.../... «a meta-analysis of seven studies involving a total of 6,250 subjects in the American Journal of Hypertension
found no strong evidence that cutting salt intake reduces the risk for
heart attacks, strokes or death in people with normal or high blood
pressure. In May European researchers publishing in the Journal of the American Medical Association reported that the less sodium that study subjects excreted in their urine - an excellent measure of prior consumption - the greater their risk was of dying from heart disease.
These findings call into question the common wisdom that excess salt is
bad for you, but the evidence linking salt to heart disease has always
been tenuous.»
.../... «Part of the problem is that individuals vary in how they respond to
salt. "It's tough to nail these associations," admits Lawrence Appel, an
epidemiologist at Johns Hopkins University and the chair of the salt
committee for the 2010 Dietary Guidelines for Americans. One oft-cited 1987 study published in the Journal of Chronic Diseases reported
that the number of people who experience drops in blood pressure after
eating high-salt diets almost equals the number who experience blood
pressure spikes; many stay exactly the same. That is because "the human
kidney is made, by design, to vary the accretion of salt based on the
amount you take in," explains Michael Alderman, an epidemiologist at the
Albert Einstein College of Medicine and former president of the
International Society of Hypertension.».../...
(Excertos do artigo de publicado na revista "Scientific American" de 08.07.2011)
Sem comentários:
Enviar um comentário