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It does not show that at all, especially not "definitively". Matt Walker's career is based on fearmongering about sleep. The actual studies are quite mixed. Her

It does not show that at all, especially not "definitively". Matt Walker's career is based on fearmongering about sleep. The actual studies are quite mixed. Here's a recent one that showed little to no effect of short or long sleep lengths on cancer risk: https://www.ncbi.nlm.nih.gov/pubmed/30463535 https://www.ncbi.nlm.nih.gov/pubmed/30463535. Feel free to read the book, but don't do so without strong skepticism. In particular, the book never actually attempts to answer the question in its title, other than to present some vague, unfalsifiable theories. It presents tons of information, but no answer to the question.

dntrkv 7y ago
There were parts of the book that I was definitely skeptical of, and after doing some research, found were not supported by any studies that I could find. So I will agree that you should remain skeptical about some claims... Really, you should be skeptical of anything you hear. But the fact that under sleeping has serious detrimental effects on your health is supported by many studies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2845795/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2845795/ https://www.ncbi.nlm.nih.gov/pubmed/8621064 https://www.ncbi.nlm.nih.gov/pubmed/8621064 https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/486518 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/410883 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://www.ncbi.nlm.nih.gov/pubmed/19109114 https://www.ncbi.nlm.nih.gov/pubmed/19109114 https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/414701 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://www.ncbi.nlm.nih.gov/pubmed/6878979 https://www.ncbi.nlm.nih.gov/pubmed/6878979 https://www.ahajournals.org/doi/full/10.1161/01.HYP.0000217362.34748.e0 https://www.ahajournals.org/doi/full/10.1161/01.HYP.00002173... There are so many studies out there about this, I don't see how you can deny this fact.

dntrkv 7y ago

There were parts of the book that I was definitely skeptical of, and after doing some research, found were not supported by any studies that I could find. So I will agree that you should remain skeptical about some claims... Really, you should be skeptical of anything you hear. But the fact that under sleeping has serious detrimental effects on your health is supported by many studies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2845795/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2845795/ https://www.ncbi.nlm.nih.gov/pubmed/8621064 https://www.ncbi.nlm.nih.gov/pubmed/8621064 https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/486518 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/410883 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://www.ncbi.nlm.nih.gov/pubmed/19109114 https://www.ncbi.nlm.nih.gov/pubmed/19109114 https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/414701 https://jamanetwork.com/journals/jamainternalmedicine/fullar... https://www.ncbi.nlm.nih.gov/pubmed/6878979 https://www.ncbi.nlm.nih.gov/pubmed/6878979 https://www.ahajournals.org/doi/full/10.1161/01.HYP.0000217362.34748.e0 https://www.ahajournals.org/doi/full/10.1161/01.HYP.00002173... There are so many studies out there about this, I don't see how you can deny this fact.