Why do high cholesterol level in the blood cause heart diseases?

Name any genetically caused diseases.

Which are recommended by physicians for persons who suffers from high blood cholesterol or cardio-vascular diseases.

The doctor examined Ravi's urine report and detected that he had high levels of glucose in his urine.What is the disease he may be suffering from? How is it caused?

Why do the veins have valves?

The disease liver rot is caused by

Write whether the following statements are true or false: The disease related with the deficient synthesis of insulin is heart disease.