The experts all seem to agree that we are not getting enough sleep, and this will impact your health. How much sleep an individual needs may be different depending on the person. However, as adults, most experts recommend between 6-8 hours per night.
There seems to be a correlation between lack of sleep and obesity. It is not a cause and effect; however, there is evidence to relate a higher BMI with a lack of sleep. Lack of sleep may affect appetite hormones such as gherlin and leptin. There has also been research showing that lack of sleep may impair glucose tolerance and increase insulin resistance. On the other hand, obesity is related to sleep apnea, and therefore extra body fat may interfere with getting enough sleep.