# Nicotinamide Riboside Enhances NAD+ Levels and Reduces Inflammation Post-Stroke

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NMN & NR Supplementation · 2025-11-27


    Nicotinamide riboside (NR) supplementation has been shown to enhance NAD+ levels and mitigate age-related neuroinflammation following stroke. This finding is significant as aging is associated with increased inflammation, which can worsen neurological outcomes after a stroke. Understanding how NR affects immune responses can provide insights into potential therapeutic strategies for aging populations.

 What this study examined

This study investigated the impact of nicotinamide riboside on monocyte metabolism and inflammatory responses in aged mice following ischemic stroke. Using a distal middle cerebral artery occlusion model, researchers compared young and aged mice to assess the effects of NR on NAD+ levels, immune cell activation, and overall stroke outcomes. The primary outcomes included changes in monocyte metabolic profiles, gut barrier integrity, and systemic inflammation.

 Why this matters for longevity research

The findings of this study are particularly relevant to longevity research as they highlight the role of NAD+ in modulating immune responses during aging. With increasing age, the body's ability to manage inflammation declines, which can lead to worse health outcomes. By enhancing NAD+ availability through NR supplementation, researchers suggest a potential strategy to improve healthspan, particularly in older adults at risk for cerebrovascular disease.

 Key findings

Aged monocytes exhibited decreased NAD+ levels compared to young monocytes.

Increased inflammatory responses were observed in aged monocytes after stroke.

Pretreatment with NR elevated NAD+ levels in aged monocytes.

NR normalized the activation states and numbers of intestinal macrophages.

Gut barrier integrity was preserved with NR treatment.

NR reduced both systemic and brain inflammation in aged mice.

Improved stroke outcomes were noted in aged mice receiving NR supplementation.

 The science behind it

NAD+ (nicotinamide adenine dinucleotide) is a crucial coenzyme involved in various metabolic processes, including energy production and cellular repair. It plays a significant role in regulating sirtuins, which are proteins linked to aging and inflammation. As individuals age, NAD+ levels decline, leading to impaired mitochondrial function and increased oxidative stress. This study suggests that restoring NAD+ levels through NR supplementation can enhance mitochondrial function in immune cells, thereby reducing inflammation and improving overall health outcomes, particularly after events like stroke.

 How it fits into the longevity field

This research aligns with a growing body of literature exploring NAD+ metabolism and its implications for aging and longevity. Other interventions, such as caloric restriction and exercise, have also been shown to influence NAD+ levels and sirtuin activity. The potential of NR as a supplement to enhance healthspan is gaining attention, especially as researchers continue to explore its effects on age-related diseases and overall metabolic health.

 Practical takeaways

Researchers and informed consumers should consider the implications of NAD+ supplementation through NR, particularly in the context of age-related inflammatory diseases. While this study provides promising results, further research is necessary to fully understand the long-term effects and optimal dosing of NR in various populations. It is essential to approach supplementation with caution and to stay informed about ongoing research in the field of aging and longevity.

 FAQ

 What is nicotinamide riboside?

Nicotinamide riboside is a form of vitamin B3 that serves as a precursor to NAD+, an essential coenzyme involved in cellular metabolism.

 How does NAD+ affect aging?

NAD+ plays a critical role in energy production and cellular repair, and its decline with age is linked to increased inflammation and age-related diseases.

 Can nicotinamide riboside improve stroke recovery?

Research suggests that nicotinamide riboside may enhance recovery after stroke by reducing inflammation and improving NAD+ levels in immune cells.

 Source: PubMed · J Neuroinflammation · published 2025-11-27.

## Sources

- PubMed · J Neuroinflammation: https://pubmed.ncbi.nlm.nih.gov/41299539/