Hair loss affects more people than is often thought. Both men and women notice their hair thinning as they age. Consequently, the search for solutions goes beyond just shampoos or classic medication. In recent years, there has been increasing focus on cellular health as the foundation of hair preservation. Within this development, NMN (nicotinamide mononucleotide) has become an interesting area of research. <\/p>\n\n
Those who wish to delve into the basics first can read exactly what NMN is and how it works via our extensive explanation of NMN: https:\/\/everydaybetter.nl\/wat-is-nmn\/<\/p>\n\n
In 2025 and 2026, new scientific publications appeared looking at the relationship between NAD\u207a, aging, and hair follicles. In this article, we discuss what we currently know for certain, what remains uncertain, and how NMN might play a role within a broader strategy for hair health. <\/p>\n\n
To understand why NMN and hair growth in 2026 may be relevant to hair growth, we must first examine NAD\u207a. This molecule is essential for energy production within our cells. Hair follicles are among the most active cells in the body. They divide continuously during the hair’s growth phase, also known as the anagen phase. This process requires significant energy and a well-functioning DNA repair mechanism. <\/p>\n\n
As we age, NAD\u207a levels decline in various tissues. This mechanism is extensively described in scientific publications on NAD\u207a and aging, for example via PubMed: https:\/\/pubmed.ncbi.nlm.nih.gov\/29608132\/ <\/p>\n\n
Lower NAD\u207a levels are associated with reduced mitochondrial function, higher oxidative stress, and slower cell renewal. In theory, this can also have consequences for hair follicles, which are highly dependent on an optimal energy supply. <\/p>\n\n
In our complete NMN guide, we explain how NAD\u207a is linked to aging processes in different tissues: https:\/\/everydaybetter.nl\/complete-nmn-gids\/<\/p>\n\n
NMN is a direct precursor to NAD\u207a. Through supplementation, the body can produce NAD\u207a more efficiently. This mechanism is central to nearly all studies on NMN. <\/p>\n\n
In 2025, a clinical study was published in the journal Cosmetics<\/em> in which researchers investigated the effects of oral NMN supplementation in women between the ages of 40 and 50. The publication is open access via MDPI: https:\/\/www.mdpi.com\/2079-9284\/12\/5\/204 <\/p>\n\n Participants were administered NMN for twelve weeks. The researchers measured hair density, hair diameter, and the ratio between hairs in the growth phase and the resting phase. <\/p>\n\n The results were cautiously positive. An increase was observed in the percentage of hairs in the anagen phase. Additionally, the average hair diameter increased. This suggests that the follicles became more active and potentially functioned more robustly. Importantly, hormonal values did not change significantly, indicating that the effect was likely not hormonally driven but rather metabolic or cellular in nature. <\/p>\n\n The study was small-scale and not placebo-controlled. This means we must be careful with conclusions. Nevertheless, it is relevant that human data specifically looking at hair parameters in relation to NMN are available for the first time. <\/p>\n\n Hair follicles require well-functioning mitochondria for ATP production. NAD\u207a is crucial for this energy production. Review articles on mitochondrial aging and NAD\u207a can be found via PubMed, among others: https:\/\/pubmed.ncbi.nlm.nih.gov\/33468552\/ <\/p>\n\n In addition, oxidative stress plays a role. Free radicals can cause damage to follicle cells. NAD\u207a activates sirtuins, proteins involved in cellular protection and stress regulation. In scientific reviews such as those published in Molecules<\/em>, the relationship between NAD\u207a and skin aging is further explored: https:\/\/www.mdpi.com\/1420-3049\/29\/4\/798 <\/p>\n\n Finally, DNA repair is relevant. Hair follicles contain rapidly dividing cells. NAD\u207a is necessary for PARP enzymes involved in DNA repair processes. You can read more background on this role of NAD\u207a in our in-depth look at how NMN works: https:\/\/everydaybetter.nl\/nmn-werking\/ <\/p>\n\n While these mechanisms are biologically plausible, it does not yet mean that every individual will experience visible hair growth.<\/p>\n\n In 2026, several review articles were published discussing the role of NAD\u207a in skin aging and hair biology. The consensus is that NAD\u207a decline is a hallmark of aging and that restoring these levels can potentially offer benefits for metabolically active tissues such as skin and hair. <\/p>\n\n What is missing, however, are large randomized placebo-controlled studies with hundreds of participants. Until then, we must speak of promising early data, not proven therapy. <\/p>\n\n It is also important to distinguish between different forms of hair loss. Androgenetic alopecia is largely influenced by DHT. NMN is not a DHT inhibitor and does not replace medications such as finasteride or minoxidil. <\/p>\n\n Most human studies on NMN show a favorable safety profile at dosages between 250 and 600 mg per day. An example of clinical safety data can be found via PubMed: https:\/\/pubmed.ncbi.nlm.nih.gov\/34437791\/ <\/p>\n\n Side effects are generally mild and rare. For a transparent overview, you can also consult our page on NMN side effects: https:\/\/everydaybetter.nl\/nmn-bijwerkingen\/ <\/p>\n\n For people considering NMN in the context of hair health, it is wise to see it as part of a broader strategy. Hair follicles respond to the overall picture of metabolic health. <\/p>\n\n
\n\nMechanisms That May Play a Role<\/h2>\n\n
\n\nWhat the research on NMN and hair growth in 2026 says so far<\/h2>\n\n
\n\nSafety and Dosage<\/h2>\n\n