Noncommunicable Diseases (NCDs): Types, Causes, and Prevention

What Are NCDs?

Noncommunicable diseases (NCDs)—also called chronic diseases—are not transmissible between people. They are the leading cause of death globally (70% of all deaths) and the top cause of disability (>50% of years lived with disability).

Four Main Categories

• Cardiovascular diseases (heart attack, stroke)
• Cancers
• Chronic respiratory diseases (COPD, asthma)
• Diabetes

Other Notable NCDs

Arthritis, Alzheimer’s, autoimmune disorders, autism, birth defects, depression, epilepsy, hearing loss, multiple sclerosis, Parkinson’s, psoriasis, vision loss.

Key Risk Factors

• Behavioral: Tobacco use, unhealthy diet, physical inactivity, harmful alcohol use.
• Metabolic/physiological: Hypertension, overweight/obesity, hyperglycemia, hyperlipidemia.
• Environmental: Air pollution, chemical exposure, unsafe water.
• Socioeconomic: Poverty, low education, inequality.
• Genetic: Family history influences susceptibility.

Prevention & Control

• Healthy lifestyle: Balanced diet, regular exercise, tobacco avoidance, limited alcohol.
• Early detection: Screening for hypertension, diabetes, cancers.
• Public health policies: Tobacco taxes, trans-fat bans, urban design for active transport, pollution control.
• Healthcare access: Affordable essential medicines and chronic disease management.

NCDs are largely preventable. Coordinated action across sectors can dramatically reduce their burden.