Causation vs Correlation? People with no mental illness get a good night's sleep, are more productive and therefore get up early in the morning. People with D

Causation vs Correlation? People with no mental illness get a good night's sleep, are more productive and therefore get up early in the morning. People with Depression and/or Anxiety have trouble falling asleep and sleeping, so once they fall asleep late at night, they will wake up later in the morning after 4-5 hours of sleep.