Opinion or narrative review
Original title: Insomnia, Short Sleep, and Their Treatments: Review of Their Associations with Weight.
Points to benefit
Short sleep is associated with weight gain, but links between insomnia, short sleep and obesity are inconsistent. More prospective trials are needed.
✓ Strength– Limit• Note
These points come from fixed rules about the type of study, its size and length, what it measured, and who has a stake. Every study on Digestery gets the same rules.
This paper is not on the ladder. It is a opinion or narrative review, and reviews and opinion pieces discuss studies that are already counted on the steps below.
↑ Stronger evidence
Not done yet. This is the step that would answer the question.
None among the papers we read.
↓ Weaker evidence
The short answer to “How much sleep do adults need for good health?”
Lowest risk at about 7 hours.
Confidence: low. Based on 22 on-topic papers.
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