The common cold is an acute respiratory infection, not a chronic disease.

Heart disease is the leading cause of death in the United States, accounting for about 655,000 deaths each year.

High blood pressure, high cholesterol, and diabetes are all risk factors for heart disease.

Smoking, obesity, and exposure to radiation are all risk factors for cancer.

Family history of diabetes, obesity, and physical inactivity are all risk factors for diabetes.

Genetics can increase a person's risk of developing a chronic disease, determine whether or not a person will develop a chronic disease, and affect the severity of a chronic disease.

Autosomal dominant is the most common type of genetic inheritance for chronic diseases.

Huntington's disease is an example of an autosomal dominant chronic disease.

Cystic fibrosis is an example of an autosomal recessive chronic disease.

Fragile X syndrome is an example of an X-linked dominant chronic disease.

Hemophilia, Duchenne muscular dystrophy, and Becker muscular dystrophy are all examples of X-linked recessive chronic diseases.

Genetic testing can be used to identify people who are at high risk of developing a chronic disease, help people make lifestyle changes to reduce their risk of developing a chronic disease, and help people get early treatment for a chronic disease.

Genetic testing can be expensive, inaccurate, and can lead to discrimination.

Genetic testing can be used to discriminate against people, deny people health insurance, and create designer babies.

Future directions for research in chronic diseases and genetics include developing new genetic tests for chronic diseases, developing new treatments for chronic diseases based on genetics, and developing new ways to prevent chronic diseases based on genetics.