A meta-analysis of 15 randomized controlled trials with 1302 participants showed significant reductions in both systolic BP (SBP) and diastolic BP (DBP) following supplementation with flaxseed products. Reduction of SBP was significant with flaxseed powder but not oil and
lignan extract. DBP was significantly reduced with powder and oil preparations, but not with lignan extract.
Even though this study used all different kinds of flaxseed products I would use only freshly ground flaxseed in foods like oatmeal, salads and smoothies. If you have a very strong blender you can add whole flaxseed (like a quarter cup). I would not use pre-ground flaxseed because it can go rancid. If you do, keep it in the freezer, but I would advise against purchasing flaxseed pre-ground.
“Effects of flaxseed supplements on blood pressure: A systematic review and meta-analysis of controlled clinical trial.” Clin Nutr. 2016 Jun;35(3):615-25. 51343 Dr. Maciej Banach. Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, 90-549 Lodz, Poland. Tel./fax: +48 42 639 37 71 maciejbanach@aol.co.uk
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Kirk
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