Center for Environmental Therapeutics

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Center for Environmental Therapeutics

CET is a non-profit dedicated to education and research on new environmental therapies.

Environmental Therapeutics is...

a growing set of effective treatments that utilize natural elements including light and air. Difficulties that tend to respond well to these therapies include:

🔸Depression
🔸Mania
🔸Troubles with sleep
🔸Daytime fatigue
🔸Reactions to shift work
🔸Changes with Daylight Saving Time

02/03/2026

🌿 When winter feels heavy, even a short walk can make a big difference.

Research shows that spending time in nature (even in brisk or chilly weather) can boost your mood, reduce stress, and reset your rhythm when the days are short and dark. A walk in the garden isn’t just exercise … 𝗶𝘁’𝘀 𝗺𝗲𝗱𝗶𝗰𝗶𝗻𝗲 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗺𝗶𝗻𝗱.

👉 Tap the link in the comments to learn more.

02/02/2026

𝗪𝗶𝗻𝘁𝗲𝗿 𝗳𝗲𝗲𝗹𝗶𝗻𝗴 𝗵𝗲𝗮𝘃𝗶𝗲𝗿 𝘁𝗵𝗮𝗻 𝗶𝘁 𝘀𝗵𝗼𝘂𝗹𝗱? 😩 For many people, the season brings real changes in mood and motivation.

In this podcast episode, experts unpack Seasonal Affective Disorder (SAD), exploring what’s happening in the brain and body (and what actually helps).

🎧 Listen to the full episode: link in the comments.

02/01/2026

✨ 𝗠𝗲𝗲𝘁 𝘁𝗵𝗲 𝗟𝗶𝘁𝗲𝗨𝗽: your winter, brighter

A beautifully simple light therapy lamp built to mimic natural sunlight and lift your mood, energy, and focus when real daylight fades.

✅ Designed for daily use, right at home or on your desk.

🔗 Find the link to our shop in the comments.

01/30/2026

💡 Think light therapy is only for winter blues? Think again.

New research shows bright light can help with depression 𝗯𝗲𝘆𝗼𝗻𝗱 𝗷𝘂𝘀𝘁 𝗦𝗲𝗮𝘀𝗼𝗻𝗮𝗹 𝗔𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗗𝗶𝘀𝗼𝗿𝗱𝗲𝗿, and Dr. Norman Rosenthal (the psychiatrist who named SAD) says it deserves wider attention in mental health treatment.

👉 Keep reading in the comments to learn more.

01/29/2026

💬 𝗩𝗶𝗮 : “I use a light box on my desk all day at work. Is that okay, or could it be too much?”

Light therapy can be a powerful tool for Seasonal Affective Disorder and low mood, but timing, intensity, and placement 𝗺𝗮𝘁𝘁𝗲𝗿 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝘀𝗶𝗺𝗽𝗹𝘆 𝗹𝗲𝗮𝘃𝗶𝗻𝗴 𝗮 𝗹𝗮𝗺𝗽 𝗼𝗻 𝗮𝗹𝗹 𝗱𝗮𝘆. Our experts break down when it helps (and when it doesn’t).

👉 Keep reading in the comments to learn what light therapy routines really work.

01/28/2026

☀️ More daytime light exposure doesn’t just lift mood: it actually boosts attention, alertness, and reaction speed in everyday life.

Participants in the first real-world study of its kind performed better cognitively when they spent 𝗺𝗼𝗿𝗲 𝘁𝗶𝗺𝗲 𝗶𝗻 𝗯𝗿𝗶𝗴𝗵𝘁 𝗹𝗶𝗴𝗵𝘁 𝗱𝘂𝗿𝗶𝗻𝗴 𝘁𝗵𝗲 𝗱𝗮𝘆.

👉 Want to understand how light can sharpen your brain and your day? Keep reading in the comments.

01/27/2026

🌬️ Stuck inside with stale air, low energy, and foggy thinking? It might be more than just “indoors blues.”

Research shows that high-density negative air ionization (a type of charged air similar to the fresh air by waterfalls and sea spray) has been shown in controlled trials to lift mood and improve alertness for people with SAD and beyond.

👉 Keep reading in the comments to learn more about 𝗵𝗼𝘄 𝗶𝗼𝗻𝗶𝘇𝗲𝗱 𝗮𝗶𝗿 𝗰𝗼𝘂𝗹𝗱 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂𝗿 𝗺𝗼𝗼𝗱.

01/26/2026

🕰️ 𝗦𝘁𝗿𝘂𝗴𝗴𝗹𝗶𝗻𝗴 𝘁𝗼 𝘄𝗮𝗸𝗲 𝘂𝗽 𝗳𝗲𝗲𝗹𝗶𝗻𝗴 𝗿𝗲𝘀𝘁𝗲𝗱 and ready even after you’ve gotten up early? New science shows it’s not just about discipline: it’s about when your brain gets light.

Early-morning light helps reset your internal clock, lift your mood, and sharpen your focus in ways coffee can’t.

👉 Keep reading in the comments to dive into the full article.

01/25/2026

🌥 Seasonal Affective Disorder (SAD) doesn’t have to be something you just “get through.”

Effective treatments range from lifestyle changes and light therapy to professional support, all aimed at 𝗹𝗶𝗳𝘁𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗺𝗼𝗼𝗱 𝗮𝗻𝗱 𝗿𝗲𝘀𝘁𝗼𝗿𝗶𝗻𝗴 𝗯𝗮𝗹𝗮𝗻𝗰𝗲 during the darker months.

Continue reading in the comments 👇

01/23/2026

📘 Looking for real-world solutions to Seasonal Affective Disorder?

The book 𝘋𝘦𝘧𝘦𝘢𝘵𝘪𝘯𝘨 𝘚𝘈𝘋: 𝘈 𝘎𝘶𝘪𝘥𝘦 𝘵𝘰 𝘏𝘦𝘢𝘭𝘵𝘩 𝘢𝘯𝘥 𝘏𝘢𝘱𝘱𝘪𝘯𝘦𝘴𝘴 𝘪𝘯 𝘈𝘭𝘭 𝘚𝘦𝘢𝘴𝘰𝘯𝘴 by Norman E. Rosenthal breaks down evidence-based approaches, from light therapy and lifestyle changes to clinical insights that help you 𝘁𝗮𝗸𝗲 𝗰𝗼𝗻𝘁𝗿𝗼𝗹 𝗼𝗳 𝘆𝗼𝘂𝗿 𝘄𝗶𝗻𝘁𝗲𝗿 𝗺𝗼𝗼𝗱.

Find a full review on this book in the comments below 👇

01/22/2026

🧠 Winter depression shares some things in common with jet lag: sluggish energy, foggy thoughts, and feeling unmotivated.

𝗧𝗵𝗲 𝗴𝗼𝗼𝗱 𝗻𝗲𝘄𝘀? Light therapy was developed to treat SAD and can be just as powerful as medication when done right.

Head to the comments to learn how to choose the right lamp and the most effective time for your sessions. ☀️

01/21/2026

💬 𝗧𝗼𝗱𝗮𝘆 𝗼𝗻 𝗔𝘀𝗸 𝗢𝘂𝗿 𝗘𝘅𝗽𝗲𝗿𝘁𝘀: “I’ve lived with mild to moderate SAD for years. Light therapy helps my mood… but why is my sleep still a mess?”

Our experts explain why light therapy works for some symptoms... and when insomnia needs a different approach. 💡

👇 Read the full expert answer in the comments.

Address

31 Harvard Street
Worcester, MA
01609

Telephone

+16463958241

Website

http://www.cet.org/

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Our Story

CET is an independent, non-profit professional organization dedicated to education and research on the new environmental therapies.

We are scientists and clinicians who work in the fields of psychiatry, psychology, chronobiology, sleep research and medicine, and gather on this website the findings of world-wide research on ENVIRONMENTAL THERAPEUTICS to help individuals and clinicians.

These treatments cover many clinical syndromes and diagnoses, in particular mood and sleep disorders, shift-work problems, but also children’s development, the ageing process, healthy architecture, and the politics of daylight saving time.

Visit our website for more information: www.cet.org