Preventable diseases are illnesses that can be avoided through specific actions, such as vaccinations, healthy lifestyle choices, and proper hygiene. Examples include measles, diabetes, and heart disease. By taking preventive measures, individuals can significantly reduce their risk of developing these conditions. Vaccinations are one of the most effective ways to prevent diseases like influenza and hepatitis. Additionally, maintaining a balanced diet, exercising regularly, and avoiding tobacco can help prevent chronic diseases. Public health initiatives often focus on education and access to resources to help communities reduce the incidence of preventable diseases.