My ldl cholesterol is low, even though i really don't eat too healthy. i read it's more risk for cancer and depression. is this true? is too low bad?

A little info: New research can be valuable, but it can also be confusing - to you and even to the doctors. From what I've heard - it's only if there is a sudden unexplained drop in LDL levels that it might indicate problems - I doubt there is any knowledge yet about a causal relationship. It is perhaps just a sign that something has changed. Check with your GP and don't worry!