Insomnia: The Silent Killer, Part 2

https://www.hghprescription.com/human-growth-hormone-clinic/insomnia-the-silent-killer/#4

Dehydration. Simple logic applies here. The more you are dehydrated, the harder your body has to work to recharge and detox. The longer it takes to detox, the more sleep you need. Unfortunately, dehydration can inhibit your ability to fall asleep. If that weren't bad enough, research has shown that severe dehydration can result in an overactive mind...still another roadblock to falling asleep. Another vicious cycle.
Hypothyroidism. The thyroid gland controls your metabolism, which is defined as the speed your digestive system converts food into energy. When the gland is under-active, sleep disruption can occur.
Shift work. The night shift is quite capable of turning your internal clock upside-down.
Sleep apnea. This hideous affliction is severe, at times, deadly severe since the sufferer briefly stops breathing during the night. This doesn’t just happen once; some studies have recorded multiple occurrences in one night. Naturally, this has a debilitating effect on sleep quality.
Food timing. For some folks, eating certain foods (or any food at all) in the two hours before going to bed can result in an upset stomach or heartburn. Also, consuming food can cause a release of insulin, which can also disrupt sleep. Finally, drinking copious amounts of fluids in the evening can result in a few midnight bathroom trips. To be on the safe side, try not to eat anything after dinner, and keep evening liquid consumption to a minimum.