What desises are not caused by microbs?

Diseases not caused by microbes include genetic disorders, such as cystic fibrosis and sickle cell anemia, which arise from mutations in an individual's DNA. Autoimmune diseases, like lupus and rheumatoid arthritis, occur when the immune system mistakenly attacks the body's own tissues. Additionally, chronic diseases like diabetes and Heart disease can result from a combination of genetic, environmental, and lifestyle factors, rather than microbial infection.