What preventive care actually covers

Preventive care is broader than an annual physical. It includes screening for conditions before symptoms appear, vaccinations, counselling on behaviours such as smoking and alcohol, and periodic risk assessment that determines what else is appropriate.

The value is uneven and specific. Some screening saves lives clearly, some is beneficial only in defined groups, and some tests popular in wellness marketing have never been shown to improve outcomes. The distinction matters because unnecessary testing carries real costs — anxiety, further procedures, and overdiagnosis of things that would never have caused harm.

  • Screening — blood pressure, lipids, glucose, colorectal cancer, cervical cancer, breast cancer, lung cancer for eligible smokers, bone density, hepatitis C, HIV.
  • Vaccination — influenza, COVID-19, tetanus boosters, shingles, pneumococcal, RSV for eligible groups, HPV.
  • Counselling — tobacco, alcohol, diet, activity, and depression screening.

How recommendations are made

In the US, the USPSTF reviews the evidence and issues graded recommendations. A grade means high certainty of substantial benefit; B means high certainty of moderate benefit or moderate certainty of moderate-to-substantial benefit. C means offer selectively; D means the evidence points against it. An I statement means the evidence is insufficient.

Under the Affordable Care Act, most US insurers cover A and B recommended services without cost sharing, though details vary. Other bodies — specialty societies, the CDC advisory committee for vaccines — issue their own guidance, which sometimes differs.

Recommendations also change as evidence develops. Colorectal screening moving from 50 to 45 for average-risk adults is a recent example, driven by rising incidence in younger adults.

A rough adult schedule

This is a general orientation, not a personal plan — your clinician tailors it to your risk, history, and family history.

  • Blood pressure — checked at least every one to two years for most adults, more often if elevated.
  • Cholesterol — periodically from young adulthood, with frequency based on risk.
  • Blood glucose or A1C — screening from around age 35 for adults with overweight or obesity, and earlier with other risk factors.
  • Colorectal cancer — from age 45 for average risk, by colonoscopy or stool-based testing at recommended intervals.
  • Cervical cancer — from age 21, with intervals depending on test type.
  • Breast cancer — mammography recommendations begin in the forties; discuss timing and interval individually.
  • Lung cancer — annual low-dose CT for eligible adults with a significant smoking history.
  • Bone density — from 65 for women, and earlier with risk factors.
  • Vision, hearing, and dental — regularly, and increasingly important with age.

Vaccination in adulthood

Adult vaccination is easy to overlook. Schedules are set by the CDC advisory committee and updated regularly, and eligibility depends on age, health conditions, pregnancy, occupation, and travel.

  • Influenza — annually for nearly all adults.
  • COVID-19 — according to current recommendations, which are updated periodically.
  • Tdap or Td — a booster roughly every ten years, and Tdap in each pregnancy.
  • Shingles — recommended from age 50.
  • Pneumococcal — for older adults and those with certain conditions.
  • RSV — for older adults and other eligible groups.
  • HPV — routinely in adolescence, with catch-up for some adults.

People with weakened immune systems, chronic lung, heart, liver, or kidney disease, or diabetes often have additional recommendations. A pharmacist can check your record.

Keeping track and making appointments count

The most common failure in preventive care is not refusal but drift — nobody is tracking what is due. Keeping your own record solves most of it.

  • Keep a list of dates: last blood pressure, lipids, A1C, each screening test, and each vaccine.
  • Record family history specifically — which relative, which condition, and at what age.
  • Bring a complete medication and supplement list to every appointment.
  • Write down your top three questions before you go in.
  • Ask what is due now, what is due next year, and what your results mean.
  • Ask about the harms as well as the benefits of any test being offered.

Be aware that direct-to-consumer whole-body scans and broad lab panels sold outside clinical guidance are generally not recommended, because they produce incidental findings that lead to further testing without evidence of benefit.