Two recent studies have decided to look at how staying thin can depend on your sleeping habits. One study had eight men and women around 22 years old sleep in a lab for two weeks. Over five nights, they gained almost two pounds when limited to five hours of sleep. They ate more, but hunger hormones responded normally. When participants were allowed nine hours of sleep, they ate less food. If you’ve gained more than 10 percent of your body weight, a sleep study is recommended. Diagnosing sleep apnea or sleeping disorders may help you sleep better, helping you to maintain your body weight.
Another study had 145 volunteers ages 45 to 75 keep sleep diaries for two weeks. Those with markers that were associated with Alzheimer’s disease slept less than those without although they spent the same amount of time in bed. This leads to the question of whether Alzheimer’s effects sleep or if sleep effects Alzheimer’s. Sleep experts recommend seven to eight hours of sleep for an ideal day. If you’re having weight gain or thinking problems without another explanation, you may want to try out a sleep study to see if you find more information that can help you address these issues.