WebMD: Many chronic health conditions are linked to feelings of depression or stress about your disease itself, so this can keep you awake at night.

Some studies have shown a link between sleep disorders and GERD. But it’s hard to say whether these two conditions just exist together, or if GERD is a cause of insomnia.

You have acid in your stomach to help with digestion. But with conditions like GERD, it can travel into your esophagus. When you’re upright, that acid may get pushed back down into your stomach when you swallow. But when you’re lying down, gravity no longer helps that happen. It also turns out that we don’t swallow much when we sleep, so acid can stay in your esophagus longer. That causes discomfort and disturbs your sleep.

If you have GERD, sleeping with your head elevated and making sure you don’t eat for a few hours before bed can help.

Many people with type 2 diabetes have sleep problems due to unstable blood sugar levels. Both high and low blood sugar during the night can make it hard to stay asleep.

Sleep and asthma are related in a couple of different ways. Sleep loss can increase inflammation in your body and make your asthma worse. Many people with asthma also have other health conditions, including sleep apnea.

 Some people struggle with nighttime, or nocturnal, asthma, which clearly affects sleep.

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