Subjective cognitive decline (SCD) is a person's own report of confusion or memory loss that is happening more often or getting worse, and public health agencies track it through a standard national survey. For a family caregiver, the useful 2026 data questions are which years your state reported, how SCD compares between caregivers and non-caregivers, and what share of people with SCD never told a doctor.
The underlying source is the CDC's Behavioral Risk Factor Surveillance System (BRFSS), which added a Cognitive Decline module that asks U.S. adults 45 and older about memory symptoms in the past 12 months. CDC's Healthy Aging Data site confirms the data span collection years 2019 through 2024, with no module fielded in 2023.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What does "subjective cognitive decline" actually measure?
- Are caregivers themselves more likely to report SCD?
- How many people with SCD actually tell a doctor?
- Does my state's data actually apply to my state?
- What does this mean at national scale?
- Questions to bring to your own situation
- Frequently Asked Questions
What does "subjective cognitive decline" actually measure?
SCD is self-reported, not a diagnosis. The BRFSS module asks adults 45+ a single question about confusion or memory loss that is happening more often or getting worse in the last 12 months, and a "yes" answer counts as SCD, according to CDC's Healthy Aging Data site. That makes it a screening-level signal of who is noticing changes in their own thinking, not a count of dementia cases.
A pooled CDC analysis of 2015–2020 BRFSS data put SCD prevalence among adults 45+ at 9.7%, or roughly 1 in 10, which is the baseline figure public health programs use for early cognitive-impairment surveillance, per CDC's report on racial and ethnic differences in SCD. An earlier CDC analysis of 2015–2016 data found a similar overall rate, 11.2%, but added a detail that matters more for caregivers: 50.6% of people with SCD said it caused functional limitations, such as needing help with household tasks or giving up day-to-day activities, according to that MMWR report. SCD, in other words, is often not just a subjective worry — for about half who report it, it already shows up in daily function.
Are caregivers themselves more likely to report SCD?
Yes, and the gap is statistically significant. A CDC MMWR analysis of 2015–2019 BRFSS data from 22 states found that 12.6% of unpaid caregivers aged 45+ who had helped a family member or friend in the past 30 days reported SCD themselves, compared with 10.2% of noncaregivers, according to the CDC's MMWR report from October 2021. The same report found that caregivers with SCD were significantly more likely than noncaregivers with SCD to be employed, male, aged 45–64, and to have chronic conditions such as heart disease or depression, per the same MMWR analysis.
That combination is worth sitting with: a caregiver's own memory or confusion symptoms frequently appear alongside the very conditions they are managing for someone else, on top of a full-time job in many cases. For a family caregiver, this is a practical prompt to ask about your own cognitive symptoms, not just the person you're caring for. A caregiver noticing more frequent confusion or memory lapses is reporting something the national data already link to caregiving status.
How many people with SCD actually tell a doctor?
Fewer than half, according to state-level detail. CDC's 2022 state infographics for California and Ohio each found that fewer than half of residents with SCD had discussed the symptoms with a healthcare provider, while 31% to 40% needed help with household tasks or had given up normal daily activities because of it, per the CDC's 2022 state infographics. That gap — functional impact without a clinical conversation — is a concrete question to raise with a family member who mentions memory changes: has this come up with their doctor at all? The data suggest that in a large share of cases, it hasn't, even when the symptoms are already affecting daily tasks.
Does my state's data actually apply to my state?
Not automatically. Because not every state fields the BRFSS Cognitive Decline module every cycle, and 2023 data are absent nationwide, a caregiver checking a state's SCD or caregiving rate should first confirm which survey years that state actually participated in, according to CDC's Healthy Aging Data infographics. A figure pulled from a state's most recent participation year could be several years old if that state skipped later cycles.
Before treating any state-level SCD or caregiving number as current, check the year attached to it — not just the headline percentage. A related complication: a 2026 University of Michigan CAPRA brief analyzing 2019–2022 BRFSS data found that states with higher reported SCD prevalence also tend to have higher dementia-related caregiving rates, but noted that informal caregiving supply doesn't always line up geographically with where SCD is most common, according to the CAPRA brief from August 2026. That mismatch is a planning-relevant fact for anyone trying to gauge whether local caregiving resources match local need.
What does this mean at national scale?
The caregiving workforce behind these numbers is large. The Alzheimer's Association's 2026 Facts and Figures report estimates nearly 13 million Americans provide unpaid care for people with Alzheimer's or other dementias, who together gave more than 19 billion hours of care in 2025, valued at over $446 billion, with about two-thirds of caregivers women and roughly 30% age 65 or older, per the Alzheimer's Association's 2026 report. Set against the MMWR finding that SCD runs higher among caregivers than noncaregivers, this scale suggests the caregiver population carrying elevated SCD rates numbers in the millions, many of them older adults managing their own health alongside someone else's.
Questions to bring to your own situation
Use these as a checklist when looking at SCD data for your own state or household:.
- Which years did my state's BRFSS actually field the Cognitive Decline module — and how recent is the figure I'm looking at?
- Has the family member or caregiver with symptoms discussed them with a healthcare provider, given that fewer than half in CDC's state data had?
- Is the person reporting memory or confusion changes the care recipient, the caregiver, or both — the MMWR data show caregivers themselves report SCD at a higher rate?
- Does the symptom already affect daily tasks, such as household chores or routine activities, which roughly a third to half of people with SCD report?
- Does local caregiving support in my area match local SCD prevalence, or is there a documented gap between the two?
Frequently Asked Questions
Is subjective cognitive decline the same as a dementia diagnosis?
No. SCD is a self-reported answer to a BRFSS survey question about confusion or memory loss getting worse in the past 12 months, not a clinical diagnosis, per CDC's Healthy Aging Data site.
Why don't all states have current SCD data?
The BRFSS Cognitive Decline module isn't fielded by every state every year, and no state collected it in 2023, so a state's "latest" figure may be several years old, according to CDC's infographics page.
Are caregivers more likely to report memory symptoms than other people their age?
Yes. CDC's MMWR analysis found 12.6% of unpaid caregivers 45+ reported SCD versus 10.2% of noncaregivers, a statistically significant difference, per the CDC's MMWR report.
