Will I develop atherosclerosis even if my blood cholesterol is pretty low?

It depends. Total cholesterol is not enough information to determine your personal risk for atherosclerosis. A low total cholesterol with a very low hdl-c may still put you at risk. In addition, even 'good' cholesterol levels when combined with obesity, smoking, lack of exercise, etc. Means you are at increased risk. Inflammation is also a risk factor, so those with rheumatoid arthritis, etc are at risk.