Back to Study: Glycine ingestion improves subjective sleep qualit...
causal
positive effect
Taking 3 grams of glycine before bed helps people remember things better at noon the next day.
Scientific Claim
A single 3g dose of glycine before bedtime significantly improves performance on memory recognition tasks at 12:00 PM in adults with chronic poor sleep (P=0.004).
Source Excerpt
“glycine ingestion the previous night significantly improved the performance of the memory recognition task (P=0.004, Fig. 8a)”
Evidence from Studies
Supporting Studies
Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes
Crossover Trial
View study →30%
Evidence Assessment
Supported
The study measured cognitive function using a memory recognition task and found a statistically significant improvement at 12:00 PM (P=0.004) after glycine ingestion compared to placebo in a randomized crossover design. This provides causal evidence for glycine's effect on cognitive performance.