Obesity and Sleep

How Does Sleep Deprivation Lead to Weight Gain?

Sleep loss creates a hormone imbalance in the body that promotes overeating and weight gain. Leptin and ghrelin are hormones that regulate appetite, and when you aren’t getting sufficient sleep, the production of these hormones is altered in a way that creates increased feelings of hunger. Sleep deprivation is associated with growth hormone deficiency and elevated cortisol levels, both of which have been linked to obesity. Additionally, insufficient sleep can impair your metabolism of food.

Unfortunately, the effects of sleep loss on weight are not limited to changes at the chemical level. Restricted sleep duration has been shown to cause a greater tendency to select high-calorie foods Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source . Calories consumed late at night increase the risk of weight gain. Furthermore, adults who do not get sufficient sleep get less exercise Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source than those who do, possibly because sleep loss causes sleepiness and fatigue during the day.

Childhood Obesity and Sleep

Children require more sleep than adults due to the important development taking place in their bodies and minds. Sleep loss in children increases their risk  Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source for becoming overweight or obese. In fact, children who aren’t sleeping enough may experience the same hormonal changes seen in adults that lead to weight gain. They could also experience increased daytime fatigue, leading to decreased activity levels.

Bedtime might also affect weight. One study found that children who went to bed later had worse diet quality , consuming more nutrient-poor foods and fewer fruits and vegetables than children who went to bed earlier.

Moreover, research has shown that among children who are overweight, those who sleep less and experience irregular sleep schedules are at the greatest risk Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source for harmful health effects.

How Does Being Overweight Affect Sleep?

People who are obese are more likely to report insomnia or trouble sleeping than those who are not obese. There is also evidence to suggest that obesity is associated with increased daytime sleepiness and fatigue , even in people who sleep through the night undisturbed. Researchers suggest that obesity may change metabolism and/or sleep-wake cycles in such a way that causes sleep quality to deteriorate. It’s also possible that there are physical effects of carrying excess weight itself which impact sleep quality.

What Sleep Concerns Are Common in People Who Are Overweight?

Many health conditions can affect sleep, and some of them are found more often in individuals who are overweight or obese. The presence of one or more of the following conditions can compound insomnia and other sleep issues caused by obesity:

• Obstructive sleep apnea (OSA): OSA is a sleep disorder in which the airway partially or fully collapses, causing loud snoring and breathing issues at night. OSA is seven times more common Trusted Source MSD Manuals First published in 1899 as a small reference book for physicians and pharmacists, the Manual grew in size and scope to become one of the most widely used comprehensive medical resources for professionals and consumers. View Source in individuals who are obese. Weight not only affects one’s risk for OSA, but being overweight can increase the severity of OSA symptoms. In December 2024, following two major phase 3 clinical trials, the Food and Drug Administration approved weight loss drug Zepbound to treat moderate to severe obstructive sleep apnea in patients with obesity. The medication is the first to be specifically approved for the treatment of OSA. Trusted Source The New England Journal of Medicine (NEJM) The NEJM is recognized as one of the world’s leading medical journals. Published continuously for over 200 years, NEJM delivers high-quality, peer-reviewed research and interactive clinical content to physicians, educators, researchers, and the global medical community. View Source .
• Gastroesophageal reflux disease (GERD): GERD is a chronic condition in which the contents of the stomach leak into the esophagus, causing symptoms such as heartburn. Obesity is a known risk factor Trusted Source Medline Plus MedlinePlus is an online health information resource for patients and their families and friends. View Source   for GERD. Symptoms are often worse when lying down, and GERD may be associated with disturbed sleep Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source .

• Depression: Obesity is associated with depression, and the two share a reciprocal relationship . In other words, obesity can cause or intensify depression symptoms, while depression can lead to weight gain. People with depression are also likely to suffer from sleep issues; insomnia occurs with depression up to 75% Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source of the time.
• Asthma: Asthma is a respiratory condition involving inflammation of the airway. Obesity increases one’s risk Trusted Source National Heart, Lung, and Blood Institute (NHLBI) The NHLBI is the nation's leader in the prevention and treatment of heart, lung, blood and sleep disorders. View Source for developing asthma and for experiencing worse asthma symptoms. Many patients with asthma experience nighttime symptoms Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source , leading to difficulty falling and staying asleep.
• Osteoarthritis: Osteoarthritis is a joint disorder marked by worn down cartilage. Being overweight can cause osteoarthritis Trusted Source Centers for Disease Control and Prevention (CDC) As the nation’s health protection agency, CDC saves lives and protects people from health threats. View Source because of the strain additional weight places on the joints. Osteoarthritis affects sleep and may share a cyclical relationship Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source with pain, depression, and disturbed sleep in which these conditions exacerbate one another.

How Can You Get Better Sleep When Overweight?

The term “sleep hygiene” means engaging in practices that support a good night’s sleep. This is important for everyone, but it’s especially critical if you are dealing with sleep concerns. Sleep hygiene involves things like setting a predictable sleep schedule, creating a bedtime routine, and engaging in healthy habits during the day. The following steps may be especially useful to consider when overweight:

• Exercise: Exercising may improve sleep quality Trusted Source Elsevier Elsevier is a publishing company that aims to help researchers and health care professionals advance science and improve health outcomes for the benefit of society. View Source   in people suffering from sleep disturbances. It has also been shown to reduce symptoms in patients with OSA Trusted Source SpringerLink SpringerLink provides researchers with access to millions of scientific documents from journals, books, series, protocols, reference works, and proceedings. View Source , independent of weight loss. Also, exercising outside exposes you to natural light, promoting a healthy sleep-wake cycle.
• Find a mattress that works for you: It’s important that your mattress allows for proper alignment of your spine and balanced contact pressure between your body and the mattress. Mattress preferences vary from one person to the next. Research has shown that body weight affects  Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source the type of mattress one may find most comfortable.
• Select foods carefully: Diet and nutrition are also components of sleep hygiene, but sleep loss can make healthy eating more challenging. Taking steps to maintain a balanced diet may improve sleep. For example, researchers have found that a diet high in carbohydrates may decrease your ability Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source   to get deep sleep. Another study found that eating within 30 to 60 minutes of bedtime resulted in poorer sleep patterns Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. View Source .

The sleep loss-weight gain cycle can be a tricky one to break. It’s important to work with a doctor or involve a sleep specialist if you are experiencing poor quality sleep that could be related to weight. Weight loss may be recommended for some, but not all, patients. A medical professional can provide individualized guidance about how to best incorporate the approaches discussed above and may be able to suggest additional interventions.

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