Answer:
Familial hypercholesterolemia
Explanation:
Familial hypercholesterolemia is a genetic disorder which is autosomal dominant.
It is characterized by dangerously high levels of cholesterol in the blood due to the body being unable to remove low density lipoprotein (LDL)cholesterol from the blood. This LDL cholesterol is also known as bad cholesterol and it’s harmful to the body.
It could cause a heart attack due to underlying atherosclerosis and coronary artery disease caused by the disorder
No... Down Syndrome is a chromosome deficiency that happens during conception when a spem and egg fertilize. Sometimes the X and Y Chromosomes don't add up correctly and can (sadly) cause this deficiency. Water in the mother's lungs can cause pneumonia which can potentially harm the fetus due to lack of oxygen. But this cannot cause down Syndrome. Water in the baby's lungs will also not cause Down Syndrome.
An infection including viruses or bacteria
