News · Nutrition & Diet
Food insecurity tracked with missed cancer screening
A JAMA Network Open analysis of 251,107 US adults found people facing food insecurity were less likely to be up to date on cancer screening, and looked at whether SNAP narrowed the gap.
Based on a peer-reviewed cross-sectional study in JAMA Network Open
- Researchers used 2022 Behavioral Risk Factor Surveillance System data, a nationally representative US survey, publishing in JAMA Network Open.
- 251,107 adults were included; 47,453 of them, or 18.9%, reported food insecurity.
- Outcomes were being up to date on colorectal, breast and cervical cancer screening under US Preventive Services Task Force guidance.
- Food-insecure respondents were younger and more often female than food-secure ones.
- Nearly 1 in 5 US adults is affected, so this is not a small subgroup.
- The study also asked whether taking part in SNAP, the main US food assistance program, narrowed the screening gap.
- Cross-sectional: food insecurity, SNAP participation and screening status were all measured at the same moment.
- Everything is self-reported, including whether a screening test actually happened.
Cancer screening is free or cheap under most US insurance, so it is easy to assume cost is not the barrier. A study in JAMA Network Open, published by the American Medical Association, looked at a quarter of a million adults. It found the barrier somewhere else: the grocery budget.
Food insecurity affects nearly 1 in 5 US adults and is associated with barriers to preventive health care.
Why link food and screening at all
The connection is not obvious at first. But screening costs a household time and disruption, not just fees.
The open question was scale. Whether food insecurity is associated with lower national cancer screening adherence and whether SNAP participation is associated with attenuation of these disparities remain unclear - the association had been suspected locally without being measured nationally.
A quarter of a million adults
The analysis used 2022 Behavioral Risk Factor Surveillance System data, a nationally representative survey of noninstitutionalized US adults.
Of 251,107 adults included in the analytic cohort, 47,453, or 18.9%, reported food insecurity. That is close to one in five, which puts this well outside the category of a small vulnerable subgroup.
The outcomes were guideline-concordant colorectal, breast, and cervical cancer screening based on US Preventive Services Task Force recommendations - not whether someone had ever been screened, but whether they were currently up to date.
Who the food-insecure group is
The demographics shape how the result should be read. Food-insecure respondents were more often younger than 65 years and more often female compared with food-secure respondents.
Age matters because screening eligibility and Medicare coverage both turn on 65. A younger group is more exposed to insurance gaps. That is one plausible route from an empty cupboard to a missed appointment.
The policy question underneath
The more useful half of the study is not the association but the test attached to it: whether SNAP participation was associated with attenuation of screening disparities among food-insecure adults.
That asks whether a food program does anything beyond food. If slack in a household budget shows up as preventive care, it changes how the return on such programs should be counted.
What a single survey cannot show
Everything was measured at once. Food insecurity, SNAP participation and screening status all come from the same interview, so nothing here establishes which came first or whether one causes the other.
Everything is also self-reported, including whether a test happened. People over-report having been screened, which would tend to narrow an observed gap rather than manufacture one.
And SNAP participation is not random: households that enrol differ from eligible households that do not, in ways a survey does not capture.
What the study establishes is narrower. A barrier most screening programs never consider is attached to nearly a fifth of US adults. That is a reason to look harder, not a conclusion about what to do.
People also ask
What is food insecurity?
Not having reliable access to enough affordable, nutritious food. It is measured by survey questions about running out of food or being unable to afford balanced meals, and it is broader than hunger: a household can be food insecure while nobody misses a meal, by eating worse or more cheaply to get by.
Why would it affect cancer screening?
Screening costs time, transport, and often money, and it competes with more immediate problems. The authors frame food insecurity as associated with barriers to preventive health care generally. A household deciding between groceries and a day off work is not weighing a colonoscopy on its merits.
What is SNAP and why test it here?
The Supplemental Nutrition Assistance Program is the main US food assistance program. The question is whether receiving it does anything beyond food - whether the financial slack it creates shows up as more preventive care. That is a policy question with a measurable answer, which is why it was treated as the effect modifier rather than as another outcome.
Does this show that fixing food insecurity would raise screening rates?
No, and the design is the reason. Everything was measured at one moment in a single survey, so nothing establishes what came first. Households facing food insecurity differ from others in income, insurance, work patterns and health, and adjustment reaches only what the survey recorded.
How reliable is a telephone survey for this?
The Behavioral Risk Factor Surveillance System is nationally representative and long-established, which is its strength. Its weakness is that everything is self-reported, including whether a screening test actually happened and when. People tend to over-report having been screened, which would compress the gap rather than invent one.