Nature, nurture and the things being remembered

2. Depression and Poor Mood
If you like to stay up late, you may be prone to experiencing mood-related 
issues. Researchers of a March 2021 Biomolecules study noted that those 
who prefer awake time during the evenings are "predisposed" to conditions 
from mood disorders to personality disturbances.
Researchers have also suggested that people who stay up late may have 
a harder time regulating their emotions. In a 2017 study in the Journal of 
Biological Rhythms, scientists found that late chronotypes are more likely 
to suppress their feelings and less likely to practice cognitive reappraisal 
(the ability to change the way one thinks about something
—to "look on the 
bright side," for example) than morning people.
3. Diabetes
Type 2 diabetes is a serious condition, particularly when it comes to staying 
up late. In fact, in a January 2022 meta-analysis published in Advances in 
Nutrition, researchers discovered that across 39 studies, people who 
stayed up late had "a significantly higher risk of diabetes" along with other 
conditions.

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4. Diabetes Management
Being a late chronotype can make it more difficult to manage diabetes. 
Consuming meals early in the day can be beneficial and should be 
encouraged in people with diabetes, according to a February 2020 Nutrition 
& Diabetes study.
Not getting enough sleep can affect how much you eat, what you're eating, 
how you respond to insulin, and how you feel mentally. All of these things 
can affect your diabetes management.
Also, research published in Sleep Medicine Clinics in December 2015 
found that people with diabetes showed a link between evening 
chronotypes and unhealthy cholesterol levels.