Final answer:
Persons most susceptible to circadian rhythm disruptions are those engaging in rotating shift work or frequent travel across time zones. Symptoms include fatigue, insomnia, and mood disturbances. Managing light exposure and maintaining a stable routine can mitigate these effects.
Step-by-step explanation:
A person most likely to experience circadian rhythm disruption is one who engages in rotating shift work or frequently travels across multiple time zones. The nature of rotating shifts, with frequently changing work hours, prevents the establishment of a regular sleep-wake cycle, leading to symptoms like fatigue, insomnia, depression, and anxiety. Similarly, jet lag can cause a mismatch between an individual's internal circadian cycle and the new environment when they travel across time zones, leading to similar symptoms. These disruptions in circadian rhythms can have serious impacts on health and job performance.
Additionally, the hormone melatonin, which is released in response to darkness, helps regulate sleep-wake cycles. Interventions to realign the biological clock, such as exposure to bright light during shift work and minimizing light during sleep periods, can be beneficial. Furthermore, factors like changes in light, nutrition, or certain medications can also influence circadian rhythms.