Assertion: melatonin's level | /r/HasProperty | affected by various outside factors
Facets:
value: negatively
type: MANNER
Source sentences:
text: Although melatonin is a hormone naturally occurring in our bodies, levels of the substance can be negatively affected by various outside factors, including not getting enough exposure to sunlight during the day, jet lag, shift work, stress and light pollution both outside and inside the home.