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Join Maria and the GBL team for livestreams, workshops, and special gatherings that bring our community together in real time.

Join Maria and the GBL community for live broadcasts, encore presentations, workshops, and special events—bringing us together in real time, every Friday.

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Episode 025

Cannabis 101: THC & CBD

Know What's In It—and How It Works

THC and CBD may be the best-known cannabinoids, but understanding cannabis means knowing more than their names. In this encore episode of Just Say KNOW with Maria®, Penny Barthel, author of The Cannabis Gardener, breaks down how THC and CBD interact with the body, why their effects can differ, and how cannabinoids can work together as part of the plant’s bigger picture. Consider it Cannabis 101 for making more informed choices about what’s in the products you buy—or grow.

Listen on just say know!

Just Say KNOW with Maria · Cannabis Education for Curious Minds · Fridays on KCAA 1050 AM / 106.5 FM — Presented by Green Bee Life.

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Find answers to your questions and get inspired with our growing library of articles & guides.

Must Reads From Our GBL Learning Center

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Must Reads From Our Learning Center

Cannabis flower surrounded by illustrations of cannabinoids, terpenes, flavonoids, and other plant compounds.

Featured

The Entourage Effect of Cannabis Explained

by Maria Calabrese, JD, MS

Cannabis

What Is Cannabis? Understanding the Plant, Hemp & Marijuana

by Maria Calabrese, JD, MS

Cannabis

What Is THC?

by Maria Calabrese, JD, MS

Cannabis

What Is Plant-Based Medicine? Cannabis, Psychedelics & Natural Therapies Explained

by Maria Calabrese, JD, MS

Cannabis 101

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Cannabis

What Is Plant-Based Medicine? Cannabis, Psychedelics & Natural Therapies Explained

by Maria Calabrese, JD, MS

Explore what plant-based medicine is, how cannabis and other botanicals fit within it, and why emerging research is reshaping conversations about natural therapies and wellness.

Cannabis

What Is Cannabis? Understanding the Plant, Hemp & Marijuana

by Maria Calabrese, JD, MS

Cannabis, hemp, marijuana, THC, CBD—what does it all mean? This Cannabis 101 guide breaks down the plant, its compounds, how it interacts with the body, ways cannabis is used, changing…

A colorful photo composition of the human body with the endocannabinoid system highlighted

Cannabis

What Is the Endocannabinoid System (ECS)? [A Beginner's Guide]

by Maria Calabrese, JD, MS

Learn what the endocannabinoid system (ECS) is, how it helps regulate balance throughout the body, and how cannabinoids like CBD and THC interact with this remarkable communication network.

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GBL Founder, Maria Calabrese redefines cannabis with industry experts on KCAA radio Fridays, 4pm PT.

Listen To Just Say KNOW

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Maria Calabrese Host | Executive Producer

Radio Show | Podcast

"Just Say KNOW with Maria" on NBC's KCAA radio and TV redefines cannabis with real conversations and expert insights. It's a people show with cannabis, not just another cannabis show with people!

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