Current conventional wisdom suggests that when it comes to good blood pressure control, the lower the better. However, because a pressure of zero over zero is incompatible with life, there would appear to be a J-shaped curve and therefore there must be a point at which lower is not necessarily better. 'This implies that we need to identify the nadir of that curve to ensure that we don't inadvertently increase risk when lowering blood pressure by intervening too intensively', said Dr Meredith. He was addressing a meeting at the South African Heart Association's annual conference at Sun City in August.
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