Disease mechanisms refer to the biological processes that lead to the development of diseases. These mechanisms can involve genetic factors, environmental influences, and interactions between cells and tissues. Understanding how these factors contribute to disease helps researchers identify potential treatments and preventive measures. Different diseases may have unique mechanisms. For example, in autoimmune diseases like rheumatoid arthritis, the immune system mistakenly attacks the body's own tissues. In contrast, cancer can arise from mutations in genes that control cell growth, leading to uncontrolled cell division. Studying these mechanisms is crucial for advancing medical science.