Mental Health

Light Therapy & Sleep Reset

Circadian Rhythm

Light exposure resets circadian rhythm and mood regulation. Inadequate daylight and excessive evening light disrupt sleep and emotional balance. Light therapy is a powerful, underused tool. Timing matters more than intensity.

Try This Today

Use light as your daily reset button. Within 30–60 minutes of waking, get 5–10 minutes of natural sunlight (or bright light exposure) to anchor your circadian rhythm and boost daytime energy. Then, dim lights and limit screens 1–2 hours before bed to allow melatonin to rise naturally—helping you fall asleep faster, improve mood, and support better blood sugar control.

Measure: Note daily sunlight exposure time.

Do: Get 10–20 minutes of morning light today.

Reflect: Ask whether light exposure supports your rhythm or disrupts it.

For Real

Is This Your Story?

A patient experiences low mood and poor sleep during winter months. Morning light exposure is introduced. Sleep improves, mood lifts, and energy returns without medication changes.

Power of Light

Morning light suppresses melatonin and anchors circadian rhythm. Evening blue light delays sleep onset and increases cortisol.

Lab trends may show worsened glucose and mood during circadian disruption.

Using light strategically improves sleep, energy, and emotional stability.

METABOLIC U

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