venerdì 1 giugno 2007
Soia e ipertensione
Effect of Soy Nuts on Blood Pressure and Lipid Levels in Hypertensive, Prehypertensive, and Normotensive Postmenopausal Women
Francine K. Welty, MD, PhD; Karen S. Lee, MD; Natalie S. Lew, BA; Jin-Rong Zhou, PhD
Arch Intern Med. 2007;167:1060-1067.
Uno studio pubblicato su Archives of Internal Medicine evidenzierebbe un piccolo ma sostanziale contributo al controllo della pressione in donne in età postmenopausale. L'inclusione nella dieta di 25 gr di soia ha portato ad una riduzione (rispetto al gruppo di controllo) del 5,2% della PA sistolica e del 2,9% della diastolica in donne normotese. Curiosamente la soia ha ridotto del 11% i valori di LDL in donne ipertese ma non in quello normotese.
Un incoraggiamento ad un approccio terapeutico differenziato.
Study Finds Soy Nuts Lower Blood Pressure
Soy nuts may reduce blood pressure in postmenopausal women, a small study published in the Archives of Internal Medicine concludes.
The randomized crossover study included 60 women. It investigated the effects of including unsalted soy nuts containing 25 g of soy protein in the National Cholesterol Education Program's Therapeutic Lifestyle Changes diet.
Compared with a diet without the nuts, adding soy nuts lowered systolic BP 9.9% and diastolic BP 6.8% in hypertensive women. The decline was a more modest 5.2% systolic and 2.9% diastolic in normotensive women.
The diet with nuts also lowered LDL 11% and apolipoprotein B 8% in hypertensive women but had no effect on these measures in normotensive women.
The authors said dietary soy "may be a practical, safe and inexpensive modality to reduce BP." They characterize the effects as being "comparable with those seen with antihypertensive drugs."