The claim made in this article that some people need more sleep than others seems to be completely valid, as all the content referenced can be traced back to an original and reliable source.
The article referenced a 2013 study from the American Sociological Review that provides a detailed experiment of the difference in sleeping patterns between men and women complete with data tables and an analysis, showing that on average, men report 496 minutes per night whereas women report 508.
The article also references a claim from the Cleveland Clinic which can also be traced back to its original source, claiming that “roughly, 1 in 3 adults worldwide have insomnia symptoms, and about 10% of adults meet the criteria for insomnia disorder.”
Additionally, this article references a study done by Dan Gartenberg, who has a PhD in cognitive psychology from George Mason University and 15+ years of experience in sleep research and technology(linkedin). The study talks about the many different factors, especially light exposure, that can affect our circadian rhythms and therefore our sleep schedule.
The final and perhaps most significant made in the Time article is from a study at UCSF, which thoroughly explains the science behind the mutation that some people have in their genes that contributes to sleep regulation and makes some people what they refer to as “short sleepers.”
In addition to the confirmation and validity of the sources this Time article referenced, its author, Jeffrey Kluger, is a well known editor at Time, as well as the author of 12 books such as Apollo 13(time.com). The article is also very recent, being released only earlier this month, so its information is up to date. When looking for similar information in other articles, I came across an article from the NIH itself, which directly referenced the UCSF study as well, proving even more validity. This Time article does a thoughtful and thorough job of answering the question presented in the headline, and backs it up with many credible and valid sources.