Sleep is increasingly recognized as a critical pillar of human health, comparable in importance to diet and exercise, according to multiple research analyses. The Centers for Disease Control and Prevention recommends that adults aged 18 to 60 years obtain seven or more hours of sleep per night for optimal functioning. Yet estimates suggest that about one in three Americans gets less than that threshold, leaving more than 83 million adults in the United States sleep-deprived, as reported by Mercola.com [1].
A growing body of evidence links insufficient sleep to a range of chronic conditions, including heart disease and depression. A study published in Scientific Reports, cited by NaturalNews.com, found that poor sleep is associated with increased cardiovascular risk, particularly among female participants who exhibited elevated free radicals in the cells lining blood vessels after a night of disrupted sleep [2]. Researchers identified a U-shaped relationship between sleep duration and biological aging in a 2026 Nature study, with the lowest biological age gaps observed in individuals sleeping between 6.4 and 7.8 hours per night, according to an article by Chase Codewell [3].
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