A harder time falling asleep is the factor that may be related to sleep disturbances and sleep disorders.
What are sleep disorders?
This is the term that is used to refer to all forms of disturbances that may keep a person awake at night even though they may want to sleep.
This would have the person having difficulty being able to rest well. This may get worse in old age. Sleep disorders have being linked to be due to several issues.
These issues may include
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