Understanding Circadian Rhythm

Circadian rhythm is a 24-hour internal clock running in the background of your brain, cycling between sleepiness and alertness. It's also known as your sleep/wake cycle and is influenced by environmental cues like light and temperature.

Surprisingly, your genes play a significant role in your circadian rhythm. Clock genes control your biological clock, affecting sleep patterns and even metabolic processes. Variations in these genes can explain why some people are night owls or early birds.

Disruptions in circadian rhythm can have serious mental health implications. Studies show links between irregular sleep patterns and conditions like depression, bipolar disorder, and seasonal affective disorder. Maintaining a stable rhythm can improve mental well-being.

As you age, your circadian rhythm changes, often leading to earlier bedtimes and wake-up times. This shift can affect sleep quality and overall health, highlighting the importance of adapting lifestyle habits to maintain a healthy rhythm.

Exposure to natural light, especially in the morning, helps reset your circadian clock. Conversely, excessive exposure to artificial light at night can disrupt your rhythm, leading to poor sleep and associated health issues. Consider limiting screen time before bed.

Even without light perception, blind individuals can have functional circadian rhythms guided by non-visual light-sensitive cells in their eyes.