The Claim

Short sleep duration (<7 hours per day) is associated with higher risks of coronary heart disease, myocardial infarction, heart failure, and atrial fibrillation compared to sleep duration of 7–9 hours per day.

Source: Associations of Accelerometer-measured Sleep Duration with Incident Cardiovascular Disease and Cardiovascular Mortality.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
52score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

People who sleep less than 7 hours a night are more likely to develop heart problems like heart attacks or irregular heartbeats than those who sleep 7 to 9 hours.

See the scientific wording

Short sleep duration (<7 hours/day) is associated with higher risks of specific cardiovascular conditions including coronary heart disease, myocardial infarction, heart failure, and atrial fibrillation, compared to 7–9 hours of sleep per day.

What the research says

1 study

  1. Study: Associations of Accelerometer-measured Sleep Duration with Incident Cardiovascular Disease and Cardiovascular Mortality.

    People who slept less than 7 hours a night were more likely to develop heart problems like heart attacks and irregular heartbeats than those who slept 7 to 9 hours, according to a big study that tracked sleep with wrist devices.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.