Mixed
Poor sleep quality is modestly but consistently associated with poorer cognitive performance, particularly verbal phonemic fluency, across the entire adult lifespan (18-98 years).
Maintain good sleep hygiene throughout your life, not just as you age. This study shows that poor sleep quality consistently impacts cognitive performance, especially verbal fluency, from young adulthood to old age. Prioritizing sleep is a key strategy for maintaining cognitive health at any age.
our findings suggests this task, dependent on multiple executive processes, is particularly affected by poor sleep quality... the negative associations between sleep and cognitive performance are a constant feature across the lifespan, rather than specifically in elderly individuals.
Why this rating
Large sample size and use of Bayesian regression to quantify evidence for the null in other domains strengthens the credibility of this modest positive finding.
Source
How are age-related differences in sleep quality associated with health outcomes? An epidemiological investigation in a UK cohort of 2406 adults
Andrew Gadie et al. · BMJ Open · 2017
DOI 10.1136/bmjopen-2016-014920
More from this paper
- Self-reported sleep quality is NOT associated with neural health (white matter integrity) in healthy adults, despite associations in clinical populations.Strong
- Better self-reported sleep quality is associated with better mental health outcomes, specifically showing a U-shaped relationship where both short and long sleep durations correlate with higher depression and anxiety.Good
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →