Does increased intake of dietary fiber reduce blood pressure in patients with hypertension and normotensives?
Increased dietary fiber intake may lower blood pressure, particularly in hypertensive patients, with maximal effects potentially requiring at least 8 weeks of intervention.
Our results indicate that increased intake of dietary fiber may reduce BP in patients with hypertension and suggests a smaller, non-conclusive, reduction in normotensives. An intervention period of at least 8 weeks may be necessary to achieve the maximum reduction in BP. Our findings warrant conduct of additional clinical trials with a larger sample size and longer period of intervention to examine the effect of dietary fiber intake on BP.
Whelton et al. (Tue,) studied this question.