What is NAD+, and why do people use it?

NAD+ is a coenzyme found in every cell. It helps your body produce energy, support metabolism, and carry out DNA repair. NAD+ levels naturally decline with age, which is why some people use NAD+ supplements as part of a wellness routine.

What do NAD+ supplements support?

People use NAD+ supplements to support cellular energy, cognitive function, metabolism, and healthy ageing. Results vary, and research is ongoing.

How can you verify that your My NAD product is genuine?

Each genuine My NAD product includes a unique authenticity verification system. You can verify your product through the official authenticity portal to confirm it is genuine.

Why is product authentication important for supplements?

Counterfeit supplements may contain incorrect ingredients, improper dosages, or poor-quality materials. Verifying authenticity helps ensure you receive a genuine product that meets quality and safety standards.

Who should consider taking NAD+ supplements?

Adults interested in supporting healthy aging, energy metabolism, cellular health, and overall wellness may consider NAD+ supplements. Always consult a healthcare professional before starting any new supplement.

Are NAD+ supplements generally well tolerated?

NAD+ supplements are generally well tolerated when you use them as directed. If you are pregnant, breastfeeding, taking medication, or managing a medical condition, you should speak with a healthcare professional before use.

Why do NAD+ levels decline with age?

Research indicates that NAD+ levels naturally decrease as we age due to changes in cellular metabolism and increased demand for DNA repair processes. This decline has led to growing interest in NAD+ supplementation.

How may My NAD products fit into a healthy aging routine?

NAD+ supports cellular energy production and DNA repair. You may use My NAD products as part of a broader routine that includes good nutrition, exercise, sleep, and regular medical guidance. Results vary from person to person.

Where can I buy genuine My NAD products in the UK?

To ensure authenticity and quality, purchase My NAD products only through the official My NAD website or authorized distributors.

7 Signs You Might Have Low NAD+ Levels

NAD+ Blogs
6 days ago
2 min read

Persistent fatigue, brain fog, slower workout recovery, and disrupted sleep are among the most commonly reported signs associated with lower NAD+ levels — though these symptoms overlap with many other causes, so they're not a diagnosis on their own.

1. Persistent Fatigue That Rest Doesn't Fix

NAD+ supports mitochondrial energy production. When levels decline, cellular energy production becomes less efficient, which can show up as tiredness that doesn't fully resolve with sleep or rest.

2. Brain Fog and Trouble Concentrating

Your brain is one of the most energy-hungry organs in the body, relying on a constant supply of ATP. Reduced NAD+ availability has been linked to difficulty concentrating and slower mental processing.

3. Reduced Physical Stamina

NAD+ plays a direct role in the energy-generating reactions your muscles rely on during exercise. Lower levels may show up as quicker fatigue during workouts that previously felt manageable.

4. Slower Recovery After Exercise

Beyond energy production, NAD+ is involved in cellular repair. Reduced availability may mean longer, more noticeable muscle soreness and a slower bounce-back after physical activity.

5. Disrupted Sleep

NAD+ interacts with sirtuin proteins that help regulate your circadian rhythm. When NAD+ activity is disrupted, sleep can become lighter or harder to fall into. We cover this in more depth in our guide to NAD+ and sleep.

6. Low Mood or Irritability

Because NAD+ supports energy production in neurons, some research links declining levels to low mood and reduced motivation — though mood is influenced by many overlapping factors.

7. A Generally Sluggish Metabolism

NAD+ is directly involved in how your body metabolises nutrients. Reduced availability may contribute to a general sense of sluggishness in how your body processes food into usable energy.

These Symptoms Aren't a Diagnosis

It's important to be honest about this: these signs overlap heavily with dozens of other common causes — poor sleep, stress, thyroid issues, iron deficiency, and more. If you're experiencing several of these consistently, the right first step is a conversation with your GP, not assuming it's NAD+.

Frequently Asked Questions

Can a blood test confirm low NAD+?

NAD+ testing exists but isn't routine in standard NHS blood panels. If you're concerned about persistent symptoms, start with your GP, who can rule out more common causes first.

Is fatigue always a sign of low NAD+?

No. Fatigue has dozens of possible causes, from poor sleep to iron deficiency to thyroid conditions. Low NAD+ is one possible contributor, not the default explanation.

At what age do NAD+ levels start declining?

NAD+ levels decline gradually with age, with many people noticing the decline becoming more pronounced from their 40s onward, though this varies by individual.

Does stress lower NAD+ levels?

Chronic stress and inflammation are thought to increase NAD+ consumption in the body, which is one reason stress management is often mentioned alongside NAD+ support strategies.

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.