https://mediarelations.uwo.ca/2018/10/09/worlds-largest-sleep-study-shows-much-shut-eye-can-bad-brain/
Dec 13, 2018 - Preliminary results from the world’s largest sleep study have shown that people who sleep on average between 7 to 8 hours per night performed better...
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https://www.sciencealert.com/largest-study-yet-on-cannabis-and-brain-function-finds-a-worrying-link
Feb 3, 2025 - Medical and recreational cannabis use is now legal in many parts of the world, but questions remain about its effect on physical and mental health – and a...
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https://www.livescience.com/largest-brain-body-size
Although bigger animals usually have bigger brains, this isn't a perfect measure of their intelligence.
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