Of the roughly 805,000 US heart attacks a year that the American Heart Association estimates from 2005 to 2014 data, how many strike someone who has had one before: about 1 in 10, about 1 in 4 or about 1 in 2?
About 1 in 4. AHA estimates 605,000 first and 200,000 recurrent heart attacks a year, an estimate built from 2005 to 2014 data. That is 200,000 of 805,000, or 24.8% (our arithmetic).
This page reports population estimates. It is not medical advice and has not been reviewed by a doctor.
Where the 1 in 4 comes from
The split comes from AHA’s annual statistics report. AHA’s 2026 fact sheet puts it in one line: “According to data from 2005 to 2014, the estimated annual incidence of heart attack in the United States was 605 000 new attacks and 200 000 recurrent attacks.”
The 2023 edition of the full report gives the same 605,000 and 200,000 and names where they come from: the ARIC study, with data from 2005 to 2014. Its Table 21-1 lists the combined 805,000 in a column for people 35 and older. So this is an estimate for adults 35 and older, using 2005 to 2014 data, not a fresh count of last year’s cases.
That matters for the date stamp. The newest data in the estimate is from 2014, and the 2026 fact sheet still prints it. Some statistics age like wine. This one is mostly just aging.
The same 2023 passage adds a detail that is easy to miss: “Of these 805 000 first and recurrent events, it is estimated that 170 000 are silent.” That is about 1 in 5 of the 805,000 in the same 2005 to 2014 estimate (our arithmetic: 170,000 divided by 805,000 is 21.1%).
Is the 40 second clock the same number?
AHA’s fact sheet also says: “Approximately every 40 seconds, someone in the United States will have an MI.” MI is myocardial infarction, as the fact sheet spells it out; the 2023 edition of the full report uses that term for the same 605,000 and 200,000 that the fact sheet calls heart attacks.
It sounds like a second statistic, but it looks like the first one wearing a stopwatch (inference). The 2023 edition calls the 40 seconds an AHA computation based on the same ARIC incidence data. A 365 day year has 31,536,000 seconds, and 31,536,000 divided by the 805,000 estimate from 2005 to 2014 data is about 39.2 seconds (our arithmetic). Rounded, that matches AHA’s 40 seconds, so the clock appears to restate the 805,000 rather than add a separate count.
What happened after a first heart attack
The 1 in 4 answers a question about all heart attacks in the estimate. A different question is what happened to people after a first one, and the 2023 edition reports a separate figure for that.
In pooled data from six research cohorts funded by the National Heart, Lung, and Blood Institute, covering 1995 to 2012, among people 45 and older who had a first heart attack, 17% of males and 21% of females had another heart attack or died of coronary heart disease within 5 years.
These two figures do not measure the same thing (inference). The 1 in 4 is a share of heart attacks, using 2005 to 2014 data. The cohort figures follow people, count another heart attack or death from coronary heart disease together, and cover 1995 to 2012. Combining them would produce a number no source printed. We could not open the 2026 full report, so we do not know whether it words or updates the cohort figures differently.
The short version
AHA estimates that 200,000 of the 805,000 US heart attacks in a year are repeat attacks, about 1 in 4, using 2005 to 2014 data. That is a sizable share and an old estimate, and both facts belong in the same sentence.
Data limits
The split between first and repeat heart attacks is an AHA estimate built from community surveillance data collected from 2005 to 2014, for people 35 and older, scaled to the US. AHA still uses it in its 2026 statistics, so the figures are more than a decade old. The 805,000 includes an estimated 170,000 heart attacks that were silent. The five year figures come from pooled research cohort data covering 1995 to 2012 and count a second heart attack or a death from coronary heart disease together. None of these numbers describes any one person’s chances.
Sources
- American Heart Association, “2026 Heart Disease and Stroke Statistics Update Fact Sheet At-a-Glance,” PDF page 2, section “Coronary Heart Disease,” https://professional.heart.org/en/-/media/PHD-Files-2/Science-News/2/2026-Heart-and-Stroke-Stat-Update/At-A-Glance/2026-Stats-Update-Fact-Sheet-At-A-Glance-Statistics_final.pdf (read via the Internet Archive copy; accessed Oct 19, 2026).
- The fact sheet summarizes Palaniappan LP, et al., “2026 Heart Disease and Stroke Statistics: A Report of US and Global Data From the American Heart Association,” Circulation, 2026, doi 10.1161/CIR.0000000000001412. We reached only its abstract and citation, not its full text.
- Tsao CW, et al., “Heart Disease and Stroke Statistics, 2023 Update: A Report From the American Heart Association,” Circulation, 2023, doi 10.1161/CIR.0000000000001123, Chapter 21, “Coronary Heart Disease, Acute Coronary Syndrome, and Angina Pectoris,” and Table 21-1, “CHD in the United States.” Full text in PubMed Central, https://pmc.ncbi.nlm.nih.gov/articles/PMC12135016/ (accessed Oct 19, 2026).
- The shares, the silent share and the seconds conversion are our arithmetic, and the reading of the 40 seconds as the 805,000 restated is our inference. All counts and percentages are as printed by AHA.
Last checked: 2026-10-19, against the AHA 2026 At-a-Glance fact sheet and the AHA 2023 Statistics Update (Chapter 21, Table 21-1).
This article was machine-checked against the sources above and has not been expert-reviewed. Spotted an error or a newer public figure? Please tell us on our contact page with the article link and we will review it.