Relationship between heredity and human health

At present, many diseases discovered by human beings are related to genes, and even all human diseases are related to genes! Some are directly affected, such as color blindness, directly affected by genes; There are indirect effects. For example, if someone's cold resistance gene is defective or suppressed, this person's cold resistance ability will be lower than that of the average person, and he is more likely to catch a cold than the average person. There is even a saying that mental illness is related to genes! Even the original sin of greed is controlled by genes! ! Having said that, LZ understand? ! ~