What is a lifestyle disease?

A lifestyle disease is primarily defined as a condition that arises from an individual's habits and choices, particularly those related to diet, physical activity, and overall lifestyle. This includes diseases that are significantly influenced by factors such as poor nutrition, lack of exercise, smoking, excessive alcohol consumption, and other behaviors that can be controlled or modified.

The correct choice highlights that these diseases, such as heart disease, type 2 diabetes, and certain types of cancer, are predominantly linked to lifestyle factors rather than purely genetic or environmental factors. Individuals have the power to reduce their risks for these conditions through healthier lifestyle choices, making prevention and modification key components in managing the risk of these diseases.

In contrast, genetic factors, medication-only treatment, or conditions that are entirely unrelated to personal choices do not represent the fundamental nature of lifestyle diseases. While genetics can play a role in an individual's overall health, lifestyle diseases emphasize the impact of personal behavior and choices in their development. Hence, the definition that aligns with this understanding is that which describes a condition mainly caused by unhealthy habits and choices.