Government guidelines advise that total blood cholesterol levels be kept below 200 mg/dL, and that LDL cholesterol be kept below 100 mg/dL. On a day to day basis, this means you should limit your average cholesterol intake to less than 300 milligrams per day.But, if you have been diagnosed with heart disease, this should be reduced further to an intake of less than 200 milligrams per day.overnment guidelines advise that total blood cholesterol levels be kept below 200 mg/dL, and that LDL cholesterol be kept below 100 mg/dL. On a day to day basis, this means you should limit your average cholesterol intake to less than 300 milligrams per day.