Melatonin levels change naturally in response to
A) stress hormones.
B) androgens and estrogens.
C) sleep-wake cycles.
D) the amount of light.

Question

Quizplus · Accepted Answer

Melatonin levels are regulated by the amount of light exposure. They increase in response to darkness and decrease in response to light. This is why melatonin supplements are often used to help regulate sleep patterns, particularly in people who have difficulty falling asleep due to shift work or jet lag. Melatonin levels are not directly affected by stress hormones or sex hormones, although these may have indirect effects on sleep and wakefulness.

Melatonin Levels Change Naturally in Response to