Red meat puts on pressure

New research in the British Medical Journal suggests that eating red meat can increase blood pressure (BP). This study found that the different types of iron (haem iron and non-haem iron) have opposite effects on blood pressure; non-haem iron (mainly from plant foods) lowered blood pressure, whereas haem iron (from red meat) increased it. High blood pressure is linked to heart disease and stroke. 

Tzoulaki et al., 2008. Relation of iron and red meat intake to blood pressure: cross sectional epidemiological study. British Medical Journal. 337 a258.