This means:
“If you regularly wake up with a dry mouth, it could be caused by several things, and the post claims the symptom may provide clues about your health.”
Breakdown
“Waking up with dry mouth?” = your mouth feels unusually dry when you wake up.
“What your body might be telling you” = suggests the symptom could indicate an underlying issue.
“1” = probably means part 1 of a series, with more information coming later.
Common causes
Morning dry mouth can be associated with mouth breathing, blocked nasal passages, dehydration, certain medications, alcohol or tobacco use, and sometimes sleep apnea.
Persistent dry mouth can also increase the risk of tooth decay and oral infections.
Tone
This is a health-awareness/clickbait headline. It creates curiosity without saying what the actual cause is.
A simpler version:
“Why do you wake up with a dry mouth? Common causes and what may help.”
