The risks of low Apo B include the possibility of malnutrition, myocardial ischemia, and liver disease. The risks of low Apo B vary depending on the cause. 1. If ApoB is slightly lowered due to strenuous exercise and exertion, it can often return to normal after rest, which is a normal physiological phenomenon and is generally not dangerous. 2. If it is pathologically low, it may be caused by pre-existing diseases that pose a higher risk, such as unbalanced diet, insufficient blood supply due to myocardial ischemia, and liver diseases such as viral hepatitis, alcoholic liver and cirrhosis, etc., which may also lead to low ApoB. Low Apo B should be treated in a timely manner by a doctor who will determine the cause of the low Apo B according to the specific condition and give the correct treatment to minimize the risk of exacerbation in a timely manner.