NAD+ and Perimenopause: What the Science Says

NAD+ and Perimenopause: Understanding the Connection

NAD+ and perimenopause overlap for a simple reason: both change during the same decade of life. As oestrogen levels start to fluctuate and eventually fall, the body's supply of NAD+ — a coenzyme every cell needs to convert food into usable energy — also declines with age. The science linking the two is still early, drawn mostly from animal studies and a handful of small human surveys. However, the underlying biology provides a plausible reason why energy, sleep, and focus often shift together during this transition.

How NAD+ and Oestrogen Are Connected at a Cellular Level

NAD+ does far more than fuel mitochondria. One of its derivatives, NADPH, is required by the enzyme 17β-hydroxysteroid dehydrogenase to convert the weaker hormone oestrone into oestradiol, the more active form of oestrogen. As NAD+ levels fall with age, researchers have asked whether reduced NADPH availability could be one small piece of the broader hormonal picture. This is a proposed mechanism, not a proven cause of perimenopause itself.

A second connection comes from an enzyme called CD38, which consumes NAD+ as cells age. In mouse studies, reducing CD38 activity increased NAD+ levels in ovarian tissue and helped preserve fertility. Higher CD38 activity was linked to faster ovarian ageing. The ovary is thought to age roughly two and a half times faster than the rest of the body. Separate mouse studies found that NAD+ precursors (NMN and NR) improved egg quality, ovulation rates, and mitochondrial function in ovarian tissue. These findings are animal-based, and it isn't yet established that the same effects translate to humans.

NAD+ and Perimenopause: Where the Energy Dip May Come From

The NHS lists fatigue, disrupted sleep, low mood, and difficulty concentrating among the common features of perimenopause. Other symptoms include hot flushes and changes to periods, with symptoms often lasting seven to nine years or longer. Because NAD+-dependent mitochondria generate cellular energy, some researchers have suggested that a falling NAD+ supply may contribute to the fatigue and brain fog many women describe. However, hormonal shifts, disrupted sleep, and stress are almost certainly larger drivers. NAD+ is best thought of as one thread in a much bigger picture, not the sole explanation.

The Role of NAD+ in Energy Production

Understanding how NAD+ functions in energy production is essential. NAD+ plays a crucial role in cellular metabolism. It helps convert nutrients from food into energy. This process is vital for maintaining overall health and vitality. As we age, NAD+ levels decline, which can impact our energy levels and overall well-being.

The Importance of Mitochondrial Health

Mitochondria are the powerhouses of our cells. They produce energy that fuels our daily activities. Supporting mitochondrial health is crucial, especially during perimenopause. NAD+ is integral to this process. By ensuring adequate NAD+ levels, we can potentially enhance mitochondrial function. This can lead to improved energy levels and overall wellness.

What the Human Evidence Actually Shows, and Where It Falls Short

Human data specifically on NAD+ and perimenopause is limited. The most cited example is a self-reported survey (registered as NCT04841499) of women aged 35 and over with menopausal symptoms who took an oral NAD+ precursor supplement combining NR and pterostilbene. Participants reported improvements, including fewer episodes of bloating and better sleep frequency. However, this was an open-label, self-reported survey rather than a randomised, placebo-controlled trial. It studied an oral supplement rather than an injectable form of NAD+. Therefore, it cannot establish that NAD+ caused the reported improvements. It's a useful early signal, not proof.

Where NAD+ Injections May Fit Alongside Other Support

For most women, the most evidence-backed ways to support energy and well-being through perimenopause remain the basics: consistent sleep, regular movement, adequate protein, and stress management. These should be combined with any treatment a GP recommends. Some women also explore NAD+ injections as one additional piece of a broader routine focused on mitochondrial health, rather than as a stand-alone fix for perimenopause symptoms. If you're taking hormone replacement therapy (HRT) or any other prescription medication, speak to your GP or prescriber before adding NAD+ injections. Interactions between NAD+ and other hormonal treatments haven't been formally studied.

Frequently Asked Questions

Does Taking NAD+ Raise Oestrogen Levels?

Not in any way that's been clinically demonstrated. NAD+'s derivative NADPH is involved in the enzymatic pathway that converts oestrone into oestradiol. However, no human trials have shown that NAD+ supplementation or injections raise oestrogen levels in perimenopausal women. Hormone replacement therapy, prescribed and monitored by a doctor, remains the option with the strongest evidence for directly addressing low oestrogen.

Can I Take NAD+ Injections Alongside HRT?

There's no published research on how NAD+ interacts with hormone replacement therapy. This isn't something to decide alone. If you're on HRT or considering it, check with your GP or prescriber before starting NAD+ injections. They can factor in your full medical picture.

At What Age Do Most Women Notice Perimenopause-Related Energy or Sleep Changes?

Perimenopause most commonly begins in a woman's 40s, though it can start earlier. The NHS notes that symptoms such as fatigue and disrupted sleep often last seven to nine years or longer before periods stop completely. Timing varies significantly from person to person.

Is There Clinical Trial Evidence That NAD+ Injections Specifically Ease Perimenopause Symptoms?

Not yet. The human evidence available so far comes from a self-reported survey of an oral NAD+ precursor supplement, not an injectable form. It wasn't a controlled trial. No published research has specifically tested NAD+ injections against perimenopause symptoms, so any benefit for this particular use remains unproven.

Are There Any Safety Considerations for Trying NAD+ Injections During Perimenopause?

The general precautions for NAD+ injections apply regardless of life stage. Follow your kit's instructions closely. Seek medical attention if you notice any signs of an allergic reaction or feel unwell after injecting. There's no evidence that perimenopause itself is a contraindication. However, if you have other health conditions or take regular medication, it's worth discussing with a healthcare professional first.

This article is for general informational purposes only and does not constitute medical advice. Always speak with a qualified healthcare professional before starting any new supplement or injectable therapy.