Early Detection of Disease: What an Internal Medicine Physician Looks For

Many important health conditions develop before a person notices symptoms. High blood pressure, abnormal cholesterol, insulin resistance, and certain cancers may be present while someone feels well. Early detection is not about ordering every available test. It is about identifying meaningful risks, selecting tests with evidence of benefit, and following through on results.

What an internal medicine physician looks for

An internal medicine evaluation begins with a detailed history: prior illnesses, current medications, family history, smoking and alcohol exposure, sleep, exercise, nutrition, and changes in weight or function. Age, sex, symptoms, and previous test results help determine which screening recommendations apply. A physical examination and carefully selected laboratory tests can then help answer focused clinical questions.

Blood pressure: a simple test with major implications

Hypertension can exist without warning symptoms. The U.S. Preventive Services Task Force recommends screening adults for elevated blood pressure and confirming an elevated office reading using measurements outside the office before beginning treatment. This reduces the risk of acting on a misleading single measurement.

Cardiovascular risk: beyond a routine cholesterol panel

A routine lipid panel is useful, but risk assessment may also incorporate family history, diabetes, kidney disease, smoking status, and other factors. The 2026 ACC/AHA dyslipidemia guideline recommends measuring lipoprotein(a), or Lp(a), at least once in adulthood to help characterize inherited cardiovascular risk. In selected adults, coronary artery calcium testing can clarify treatment decisions. Neither test should be presented as necessary for every person at every visit.

Screening for cancer when it can make a difference

Preventive screening depends on the cancer, the patient’s age and risk, and the balance of benefits and harms. For example, colorectal cancer screening is recommended for average-risk adults beginning at age 45. Someone with a significant family history may require a different approach. Unnecessary scans and tumor-marker panels can produce false positives and additional procedures, so broad testing should not be confused with better prevention.

Metabolic health, sleep, and long-term function

Early evaluation may include assessment for diabetes or prediabetes when indicated, review of sleep apnea symptoms, and discussions about activity, strength, body composition, and nutrition. These issues matter because preventing disease and maintaining physical and cognitive function are both important parts of healthy aging.

How concierge internal medicine can support continuity

Screening is only one part of preventive care. Results must be interpreted, discussed in context, and revisited when appropriate. A longitudinal relationship with an internal medicine physician can make it easier to track trends, coordinate referrals, review medications, and follow up on changes in health.

Dr. Nazarian’s approach

As a board-certified internal medicine physician, David Nazarian, MD, emphasizes individualized assessment rather than a one-size-fits-all list of tests. The goal is to identify established risk factors, decide which diagnostic and screening tools are medically appropriate, and turn findings into a practical prevention plan. This article is general education, not a substitute for a personalized medical evaluation.

Medical references

• USPSTF: Hypertension in Adults — Screening
• USPSTF: Colorectal Cancer — Screening
• AHA: 2026 Dyslipidemia Guideline Highlights

Medically reviewed by David Nazarian, MD on October 15, 2026