Sourdough bread may be good for cholesterol in some people. In one study, participants saw a reduction in serum cholesterol from sourdough bread, while others did not see meaningful effects. In another study, people with the APOE E3/E3 genotype experienced heightened LDL cholesterol from eating sourdough bread, making it a potentially poor choice for high cholesterol in these participants. It may be best to speak to your healthcare provider for their recommendations on which bread you should eat to manage cholesterol.