Answer:
Yes.
Explanation:
Knowing that sleep deprivation affects your mental health, then it isn't a long shot to know that it would affect an essay.
First off, lots of people dislike essays. And I mean lots. I personally do not mind, but that's just me. Tie in the fact that lots of kids also don't like school and that's even worse.
Now, back to sleep. Quoting this from G*ogle, " 70% of adults [in Am*rica] report that they obtain insufficient sleep at least one night a month, and 11% report insufficient sleep every night." This is then followed up by, "..it is estimated that sleep-related problems affect 50 to 70 million Am*ricans of all ages..."
* sips tea *
Wow.
So, this isn't any surprise that lots of people, primarily Americans, do not get enough sleep. This is, can, and will tie in with their mental health, which will affect their performance by day.
Tie that in with everything I said about school and you get an enormous yes.
Yes! Sleep affects your mental health and it will definitely affect that mental health essay, so long as it's asking you the questions.
Hope this helped!
Source(s) used: G*ogle, SleepHealth
