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Chapters

0:00 Introduction
0:06 Lack of physical activity
0:40 Unhealthy sleep schedule
1:09 Late night snacks
1:38 certain medications
2:19 Increased fiber intake
2:52 More carbohydrate consumption than usual
3:29 Increased sodium intake
4:28 You worked out too hard





Sleep and weight is the association between the amount sleep an individual obtains and the weight of that individual.

Numerous studies have demonstrated an association between sleep disturbances and weight gain, and more specifically, that sleep deprivation is related to overweight.[1] Furthermore, body weight also influences the quality of sleep and the occurrence of sleep disorders like obstructive sleep apnea.[2] Oversleeping may also contribute to weight gain.[3]

Additionally, there is a decrease in sleep duration and quality among most populations due to modern lifestyles which include an increased time spent looking at artificial lights from screens.[4][5] Numerous studies found a relationship between quality of sleep and bodyweight, showing that sleep deprivation might be associated with future weight gains and incident obesity.[6] The availability of night-time use of electronic devices and communication devices are associated with shorter sleep duration and increased body weight in children.[5] he biological reaction to a stressor is the activation of the HPA-axis. In a stressful environment the body will release multiple hormones including cortisol. Over a long duration high cortisol concentrations can have negative effects on the immune system,[7] attention and memory[8] and can increase the risk of psychological disorders, such as depression.[9] Also, too much stress can have an impact on sleep and is a risk factor of insomnia.[10]

Stress can have an effect on sleep patterns, food intake and consequently weight gain.[1] Stress has been found to be associated with increased emotional reward of palatable foods, which in turn can also lead to obesity.[1] There seems to be only a one-sided relationship between cortisol levels and sleep deprivation. High cortisol levels due to high stress can lead to decreased sleep duration.[1] However, 24-hour sleep deprivation does not seem to lead to changes in cortisol levels in healthy adults.[11]

However, it is believed that chronic sleep deprivation has a negative effect on the neuroendocrine system and seems to change the ways in which people deal with challenges.[12] The first changes appear to be on emotional perception, but might also change the fundamental properties of the neuroendocrine stress axis in the long run.[12]