Genetics: Why you may inheret a disease?

Question

Genetics: Why you may inheret a disease?

Is it possible that people who have a 'genetic' disposition, a vulnerability to a disease, may in fact have a vulnerability to certain bacteria, certain viruses, or certain parasites ?

Answer 1

Of course.
Genes determine everything about your body, including your immune system. In fact, there are many immune deficiency related genetic disorders.

Some other genetic diseases include for example, a gene that makes a faulty hemoglobin molecule, a gene that makes DNA more fragile and likely to mutate, a gene that makes a malformed cholesterol receptor, and MANY other types of defects. The abnormal gene gets passed on from the parent to the child. Some genetic diseases need TWO abnormal genes, one from each parent (like cystic fibrosis). Some genetic diseases only need one parent to carry the bad gene. Some diseases have a gene variation that simply makes you "more likely" to develop a certain problem. It is very complex!!!! It is amazing that more people don't have serious genetic problems...but the body is a beautiful thing.

Answer 2

genetic diseases are just a back up of the law of averages, and I guess, even though, genetic factors may not predispose you to virus, parasites or bacteria, then environmental factors will.

Answer 3

Yes, autoimmune disorders can be hereditary.

http://en.wikipedia.org/wiki/List_of_autoimmune_diseases