Abstract: The invention concerns bacteria having byle salt hydrolysis activity and optionally and preferably also bile salt polymerisation activity. Food products comprising such bacteria have been found to be capable to reduce the blood cholesterol level in the human blood. The effect is obtained by interference with the cholesterol and/or bile salt metabolism and is based on BSH activity of the bacteria. Food products which, on the basis of their normal daily intake provide a daily-BSH-intake of 0.3 micro-mol/min/kg bodyweight, are preferred, and even more preferred are food products providing at least a daily-BSH-intake of 0.6 micro-mol/min/kg bodyweight. In a further preferred embodiment a BSH activity of at least 0.8 micro-mol/min/1e10 cfu is obtained by the common, daily intake of food products comprising the bacteria. Further preferred are food products comprising fat, wherein at least 40% of the fat are poly unsaturated fatty acids.