Generally, high cholesterol levels increase the risk of cardiovascular diseases, but in rare cases, low-density lipoprotein (LDL or "bad" cholesterol) or total cholesterol levels that are too low can also cause some health problems.
Low cholesterol levels may slightly increase the risk of the following conditions:
Additionally, during pregnancy, low cholesterol levels can increase the risk of preterm birth and low birth weight.
It is important to emphasize that health issues due to low cholesterol levels are uncommon, and what constitutes "too low" varies from person to person with no standardized threshold. The medical community is still researching the relationship between low cholesterol levels and these health problems.