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    The NADefense Blog

    Learn More About Vision Wellness

    Plain-English guides on eye health, the science behind our ingredients, and how to have better conversations with your ophthalmologist.

    Can GLP-1 Drugs Like Ozempic Protect Your Optic Nerve? Eye Health
    March 20, 2026

    Can GLP-1 Drugs Like Ozempic Protect Your Optic Nerve?

    Weight loss drugs are everywhere. But emerging research suggests GLP-1 drugs like semaglutide and liraglutide might do more than slim your waistline: they could protect the nerve cells...

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    How to Protect Your Vision After 45: A Science-Based Supplement Guide Eye Health
    March 09, 2026

    How to Protect Your Vision After 45: A Science-Based Supplement Guide

    As you reach your mid-40s, your eyes undergo changes that go beyond needing reading glasses. While presbyopia is common, more serious conditions like macular degeneration and glaucoma can...

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    Why Mitochondrial Health Is the Key to Preventing Age-Related Eye Disease Eye Health
    February 23, 2026

    Why Mitochondrial Health Is the Key to Preventing Age-Related Eye Disease

    Your retina is one of the most energy-hungry tissues in your body. While most eye health advice focuses on sunglasses and surface-level vitamins, the real battle against age-related...

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    NAD+ and Glaucoma: What New Research Reveals About Protecting Your Optic Nerve Eye Health
    February 11, 2026

    NAD+ and Glaucoma: What New Research Reveals About Protecting Your Optic Nerve

    Lowering eye pressure is the standard treatment for glaucoma, but for many, it isn't enough. Emerging research suggests that a decline in NAD+, a vital coenzyme for cellular...

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    * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Sight Guard is a dietary supplement. Consult your physician before starting any supplement regimen.

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