Why Do NAD+ Levels Decrease With Age and What Should Be Done

As we age, our energy levels decline, our mental performance decreases, and our recovery time lengthens. One of the most important biochemical factors behind this is the decrease in NAD+ levels in our bodies over time.
Recent research suggests that NAD+ supplementation may slow this decline and contribute to healthy ageing.
So why does NAD+ decrease with age, and what can we do to balance it?

What is NAD+?

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in all cells in our body that plays a role in vital processes such as energy production, DNA repair and cellular renewal.

Its main functions are:

Why do NAD+ levels decrease with age?

1. Weakening of mitochondrial function

Mitochondria are our energy production centres. With age, their efficiency decreases, NAD+ consumption increases, and reserves are depleted more quickly.

2. Increased DNA Damage

UV rays, environmental toxins, and free radicals damage DNA. More NAD+ is used to repair this damage.

3. Changes in Enzyme Activity

As we age, the activity of the enzyme CD38, which breaks down NAD+, increases, lowering existing NAD+ levels.

4. Chronic Inflammation (Inflammaging)

Low-level but persistent inflammation causes NAD+ stores to deplete.

5. Lifestyle Factors

Insufficient sleep, excessive stress, poor nutrition, smoking, and alcohol negatively affect NAD+ levels.

Symptoms of Low NAD+ Levels

NAD+ supplementation is used to increase NAD+ levels in the body. It is usually found in the following forms:

1. NMN (Nicotinamide Mononucleotide)

High bioavailability

Rapid absorption

Popular among middle-aged and older individuals

2. NR (Nicotinamide Riboside)

Strong scientific support

Effective for brain function and energy metabolism

3. Liposomal NAD+

High absorption rate

Direct form of NAD+

Other Ways to Increase NAD+ Levels

1. Intermittent Fasting

Fasting naturally increases NAD+ production and enhances sirtuin activity.

2. Regular Exercise

Aerobic exercise in particular increases the number of mitochondria and NAD+ levels.

3. Diet Rich in Vitamin B3

Tuna, chicken breast, mushrooms, peanuts, and green vegetables contain NAD+ precursors.

4. Cold Exposure

Short cold showers or ice baths can trigger NAD+ levels.

5. Avoid Stress and Maintain a Regular Sleep Schedule

DNA repair and NAD+ synthesis reach their maximum levels during sleep.

Scientific Findings

Harvard University studies have shown that increasing NAD+ levels in elderly mice resulted in energy and muscle performance similar to that of young mice.

A study published in Nature Communications revealed that NAD+ slows down signs of ageing by supporting sirtuin activity.

In human studies, individuals who regularly supplemented with NAD+ reported reduced fatigue and increased mental clarity.

Things to Consider

Consult a doctor before use

The dosage is usually between 250-500 mg daily

Products with a purity rate of 98%+ that have been tested by independent laboratories should be preferred

Frequently Asked Questions

1. Can NAD+ supplementation be used by young people?
It is generally recommended for those over 30, but young people who are under intense stress or involved in sports may also use it.

2. How long does it take to see results?
Improvements in energy and mental clarity are usually noticeable within 4-8 weeks.

3. Are natural sources sufficient?
Natural production may become insufficient with age, so supplements may be helpful.

The decline in NAD+ levels with age can lead to various negative effects, ranging from energy loss to signs of premature aging.
NAD+ supplementation and healthy lifestyle habits are among the most effective ways to slow down this process and maintain your biological age.
You can maintain optimal NAD+ levels by combining regular exercise, a balanced diet, a consistent sleep schedule, and appropriate supplementation.