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.

What Nicotinamide Riboside Is Doing Inside Your Retina eye health
May 26, 2026

What Nicotinamide Riboside Is Doing Inside Your Retina

You have probably heard that NR boosts NAD+ for energy and longevity. Here is what two new studies reveal about what it does specifically inside your retina.

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Why Your Eye Doctor Might Prescribe a Walk Eye Health
April 27, 2026

Why Your Eye Doctor Might Prescribe a Walk

Most glaucoma patients focus on drops and monitoring. But a 2025 study found that 10,000 steps a day is linked to significantly better blood flow to the optic...

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Sleep Apnea and Glaucoma: What the Science Shows Glaucoma
April 20, 2026

Sleep Apnea and Glaucoma: What the Science Shows

Thirty million Americans have sleep apnea. A growing body of research links repeated overnight oxygen drops to optic nerve damage. Here is what the evidence says and what...

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What the AAO's New NAD+ Statement Means for You Glaucoma
March 23, 2026

What the AAO's New NAD+ Statement Means for You

Two of America's top eye organizations just acknowledged that NAD+ precursors show promise for glaucoma. Here's what you need to know.

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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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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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