Adult Health Screenings: A Reference Guide by Age and Risk Factor

Why Preventive Screenings Matter

Preventive health screenings are tests designed to detect conditions before symptoms appear. Catching a problem early — whether it's high blood pressure, elevated blood sugar, or an abnormal cell growth — often means simpler treatment and better outcomes. Yet many adults skip or delay screenings, sometimes for years.

This reference guide organizes commonly recommended adult screenings by age group and general risk category. It is intended as a general educational resource, not a substitute for personalized medical guidance. Always discuss your individual screening schedule with a qualified healthcare provider.

For a broader look at annual preventive priorities, see our annual preventive health checklist.

Screenings by Age Group

Ages 18–39

• Blood pressure: At least every 2 years if normal; annually if readings are elevated (120–129 systolic).
• Cholesterol (lipid panel): Beginning at age 20 for adults with risk factors; discuss frequency with your provider.
• Blood glucose / diabetes screening: Recommended starting at age 35, or earlier for adults with overweight or obesity.
• Cervical cancer (Pap smear / HPV co-test): Every 3 years starting at age 21; every 5 years with co-testing from ages 25–65.
• STI screening: Annually for sexually active adults at elevated risk, including all sexually active women under 25 (chlamydia, gonorrhea).
• Depression screening: Recommended for all adults at routine visits. Learn more about mental health screenings as preventive care.

Ages 40–49

• Breast cancer (mammogram): The U.S. Preventive Services Task Force recommends starting screening mammograms at age 40; discuss timing and frequency with your provider based on personal risk.
• Colorectal cancer: Average-risk adults should begin screening at age 45. Options include colonoscopy (every 10 years) or annual stool-based tests.
• Diabetes (fasting glucose or HbA1c): Every 3 years for adults without diagnosed diabetes, more frequently with risk factors.
• Vision and hearing: Baseline eye exam; hearing check if you notice changes. Frequency determined by findings and risk.

Several important screenings in your 40s are frequently delayed — understanding which ones matter can help you prioritize.

Ages 50–64

• Colorectal cancer: Continue regular screening if not already started; colonoscopy every 10 years or stool tests annually.
• Lung cancer (low-dose CT): Recommended annually for adults ages 50–80 with a 20-pack-year smoking history who currently smoke or quit within the past 15 years.
• Bone density (DEXA scan): Women at increased risk of osteoporosis may begin before age 65; discuss risk factors with your provider.
• Abdominal aortic aneurysm (AAA): One-time ultrasound screening for men ages 65–75 who have ever smoked; may be discussed earlier based on family history.

Ages 65 and Older

• Bone density: Recommended for all women 65 and older; men with risk factors should discuss screening with their provider.
• Cognitive assessment: Routine wellness visits often include brief cognitive evaluations; report memory concerns promptly.
• Vision and hearing: Annual assessment recommended, as changes accelerate with age.
• Shingles vaccine (Shingrix): Two-dose series recommended for adults 50 and older — a reminder that immunizations remain a key part of preventive care at every age. See the full adult immunization schedule.

Screenings Shaped by Risk Factors

Age is only one variable. Several personal and family history factors trigger earlier or more frequent screening recommendations:

• Family history of cancer: A first-degree relative diagnosed with colorectal or breast cancer at a young age typically warrants earlier and more frequent screening.
• Obesity or overweight: Increases risk for type 2 diabetes, hypertension, sleep apnea, and certain cancers — screening may begin at lower age thresholds.
• Tobacco use: Elevates risk for lung, oral, and bladder cancers, as well as cardiovascular disease, warranting targeted screenings.
• Hypertension or high cholesterol: Requires more frequent cardiovascular monitoring and may prompt earlier diabetes evaluation.
• Sexual behavior and STI history: Guides frequency of STI testing and HPV-related screening.

Women have additional sex-specific considerations across each decade. Preventive care priorities shift significantly for women across their 20s through 60s.

This article is for general informational and educational purposes only and does not constitute medical advice. Screening recommendations vary based on individual health history, family history, and clinical guidelines that are periodically updated. Consult a licensed healthcare provider to determine the right screening schedule for your specific circumstances.