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The latest in research by Dr. Glenn Rothfeld.

My Supplement Shelf: Vitamin D3

At 75 years old, living with Parkinson’s Disease, I have become increasingly interested in therapies that support strength, mobility, cognition, im... ... Read More

My Supplement Shelf: Vitamin D3

Glenn Rothfeld | May 20, 2026

At 75 years old, living with Parkinson’s Disease, I have become increasingly interested in therapies that support strength, mobility, cognition, im...

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Can Microdosing Semaglutide Help with Inflammatory Problems?

Glenn Rothfeld | March 25, 2026

Semaglutide (brand names Ozempic and Wegovy) has taken the medical world by storm. These drugs belong to a class called GLP-1 receptor agonists, w...

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Transfer Factor: Nature’s Communicator

Glenn Rothfeld | October 31, 2025

It's hard to find one supplement that supports the immune system as safely and effectively as Transfer Factor. Originally discovered over sevent...

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