As winter approaches and daylight fades, many people begin to feel unusually low or tired. Psychiatrist Dr. Norman Rosenthal, who first discovered Seasonal Affective Disorder (SAD), explains how light therapy and simple lifestyle changes can make a big difference.
🌤 Understanding Seasonal Affective Disorder (SAD)
Seasonal Affective Disorder is a type of depression that typically begins in fall or winter, caused by reduced sunlight exposure. It leads to:
- Low mood or sadness
- Fatigue and excessive sleep
- Lack of interest in activities
- Difficulty concentrating
According to research, about 5% of Americans experience SAD each year — with women being four times more likely to be affected. Many others experience milder symptoms, often referred to as the “winter blues.”
💡 Light Therapy: The Expert’s Go-To Treatment
Dr. Rosenthal, now a professor at Georgetown University School of Medicine, recommends light therapy as one of the most effective treatments for SAD.
“Light can lift mood by mimicking natural sunlight,” he explains.
In his home, Rosenthal uses bright light boxes every morning, helping his body regulate its natural rhythm and energy levels.
How to apply it:
- Use a 10,000-lux light box daily for 20–30 minutes.
- Sit near the light early in the morning.
- Combine it with morning exercise or reading for best results.
🏃 Other Ways to Fight the Winter Blues
Rosenthal adds that small daily actions can reduce the impact of SAD and keep energy levels up.
Simple steps include:
- Get outdoors: Even on cloudy days, natural light helps regulate mood.
- Stay active: Exercise boosts serotonin and reduces fatigue.
- Connect socially: Talking to friends and family prevents isolation.
- Maintain a sleep routine: Go to bed and wake up at consistent times.
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🌞 You’re Not Alone
“If you’re struggling each winter, remember you’re not the only one,” says Rosenthal. “There are effective ways to feel better — starting with light, connection, and self-care.”
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