NMN (nicotinamide mononucleotide) Health Benefits

Could NMN help the body age more successfully? NMN, or nicotinamide mononucleotide, is a naturally occurring compound that helps the body produce NAD+, a vital substance found in every living cell. NAD+ plays an important role in cellular energy, DNA repair, mitochondrial function, inflammation control, and other processes that help the body stay resilient over time. However, NAD+ does not remain steady throughout life. One observational study in humans found that NAD+ levels may drop by about 50% by age 50.

For older adults, this decline may be important. Lower NAD+ levels have been associated with metabolic dysfunction, inflammation, reduced mitochondrial performance, and other changes tied to aging and chronic disease risk. Since NMN helps the body make NAD+, researchers are studying whether NMN supplementation may help restore some of this lost cellular support. NMN has recently entered the supplement market. Early research suggests that NMN may benefit several areas of aging health, including energy metabolism, insulin function, brain and nerve health, cardiovascular support, muscle function, inflammation balance, and eye health.

NAD+ (nicotinamide adenine dinucleotide)

In controlled human trials, oral NMN supplementation significantly increased blood NAD+ levels compared to placebo. NMN is a lower-cost way to boost NAD+. ^1  2 

As you age, NAD+ levels progressively decline across multiple human tissues and have been associated with age-related chronic disorders and metabolic dysfunction. ^3  4

Every living cell of the body contains naturally occurring NAD+. However, one observational study in humans found that NAD+ levels may be reduced by half by the time a person reaches age 50. ⁵ 

Decreased NAD+ levels are associated with reduced mitochondrial function and increased risk of premature aging and chronic age-related conditions. ^{6  7  8  9}

We have discussed a lot about the negative effects of oxidative stress on the body. With age, cellular damage accumulates due to inflammation, oxidative stress, and DNA damage.

The Importance of NAD+

NAD+ is critical for all cells. Preclinical data show that it is a key mediator in energy metabolism, DNA repair, cellular antioxidant defenses, inflammation regulation, and more. It is critical for normal cellular function.

Without ample NAD+, cells cannot properly convert food into usable energy or effectively mitigate DNA damage. NAD+ is required for the normal function of over 300 proteins.

Why Take NMN instead of NAD+ Supplements

Orally consuming NAD+ is not an effective way to replenish levels. In addition to being poorly absorbed, it cannot readily pass through the cell membrane intact.

Two precursors have been shown in clinical studies to raise blood NAD+ levels significantly, efficiently, and safely, which are NR (nicotinamide riboside) and NMN (nicotinamide ).

Vision Benefits

Studies show NMN (Nicotinamide Mononucleotide) promotes eye health by increasing NAD+ levels, which restores mitochondrial function, reduces retinal inflammation, clears damaged cells, and increases tear production. These preclinical findings offer potential therapeutic avenues for degenerative conditions like age-related macular degeneration (AMD), glaucoma, and dry eye disease.

NMN helps reduce senescent cells

What is senescence?

Senescence is one of the recognized hallmarks of aging. It occurs when normal cells become senescent in response to stress, such as DNA damage or excessive reactive oxygen species (ROS). When too many senescent cells build up, they can increase inflammation and contribute to the development of many age-related diseases, including macular degeneration.

Senescent cells are sometimes called “biological zombies.” These damaged cells permanently stop dividing, but they do not die. Instead of undergoing normal programmed cell death, they remain in tissues and release harmful inflammatory molecules that contribute to tissue breakdown and aging. The body usually clears these cells naturally, but with age, the immune system becomes less effective. As senescent cells accumulate, they release a damaging mixture of inflammatory proteins, growth factors, and enzymes. This can affect nearby healthy cells and fuel chronic inflammation.

Scientists have found that NMN may help improve eye degeneration by reducing senescent cells. In a mouse model of macular degeneration, NMN treatment helped restore retinal structure while reducing cellular senescence. ¹⁰ 

One study concluded that NMN treatment can potentially help with the prevention of and protection from various ocular diseases, as NMN treatment modulated oxidative stress, ocular inflammation, and complex metabolic dysregulation in murine (mouse or rat) models. Other eye diseases noted that NMM may help with issues around ischemic retinopathy, corneal defect, glaucoma, and age-related macular degeneration. ¹¹

Macular Degeneration

Research suggests that NMN may influence the activity of many genes in induced pluripotent stem cell-derived retinal pigment epithelium cells, also known as iPS-RPE cells. Some of these genes may be involved in processes linked to age-related macular degeneration (AMD).  ¹²

The outer portion of the retina contains the photoreceptors and related structures that begin the process of vision. These cells capture light and help convert it into nerve signals, which then travel through the optic nerve to the visual cortex in the brain. However, photoreceptors cannot do this work alone. They depend on the retinal pigment epithelium (RPE), a layer of highly active support cells that helps maintain the health and function of the outer retina.

This part of the eye also has exceptionally high energy and nutrient demands. The RPE and photoreceptors receive support from the choriocapillaris, a dense network of tiny blood vessels located outside the retina. This blood supply delivers oxygen and nutrients to the outer retina, helping meet one of the highest metabolic demands in the body, possibly second only to the brain.  ¹³

Glaucoma

Lower serum levels of NMN have been reported in people with glaucoma, and reduced NMN has also been observed in retinal tissue. ¹⁴ Research has also linked glaucoma with mitochondrial problems, both in animal studies   ¹⁵ and in people with the disease. ¹⁶ Since mitochondria produce much of the energy cells need, impaired mitochondrial function can make retinal and optic nerve cells more vulnerable to damage. ¹⁷

Studies have also found changes in mitochondrial behavior, including increased mitochondrial size and movement, along with reduced action potential firing frequency. These findings suggest that mitochondrial dysfunction may play an important role in glaucoma-related nerve stress.

In animal models of glaucoma, NMN was shown to reduce glaucomatous damage. At the higher dose, NMN also helped lower the rise in intraocular pressure (IOP), suggesting that it may support the eye in more than one way: by protecting vulnerable cells and by helping reduce pressure-related stress.  ^18  19

Check out some of our other articles about NMN, NAD+ and similar vital chemicals in the body.

Conclusion

NMN provides a wide range of health benefits and supports natural approaches to help preserve healthy vision, in combination with a healthy lifestyle and other targeted supplementation.

Recent Related News:

The first human in history has received an experimental cellular “reprogramming” injection into the eyeball, aimed at reversing age-related cellular damage. This is a Phase 1 study. The therapy works by activating specific genes that prompt old, damaged cells to revert to a more youthful state. The trial focuses on treating open-angle glaucoma (OAG) and non-arteritic anterior ischemic optic neuropathy (NAION). Instead of merely slowing the progression of vision loss, the goal is to repair the optic nerve and restore vision. ²⁰

Suggested Supplements to Consider

Wonderfeel NMN capsules 60 vegcaps

Dr. Grossman’s Complete Eye Formula 2oz (oral spray)

Advanced Eye & Vision Support Formula (whole food) 60 vcaps

Dr. Grossman’s Meso Plus Retinal Support and Computer Eye Strain Formula with Astaxanthin 90 vcaps

Dr. Grossman’s ReVision Formula (wild-crafted herbal formula) 2 oz – supports healthy circulation and energy flow in the eyes and whole body, and supports healthy nerve function.

Visual Detox Homeopathic Drops 2oz

Dr. Grossman’s Advanced Eye and Dr. G’s Whole Food Superfood Multi1 20 Vcap Combo – 2 months supply

Dr. Grossman’s Blood Vessel Control Formula 2oz

Recommended Books

Natural Eye Care: Your Guide to Healthy Vision and Healing

Natural Brain Support: Your Guide to Preventing and Treating Alzheimer’s, Dementia, and Other Related Diseases Naturally

Natural Parkinson’s Support: Your Guide to Preventing and Managing Parkinson’s