Most people know that stress is tiring, but what is less well understood is why prolonged stress can leave you feeling depleted for days or weeks after the stressful period has passed. The answer is not simply psychological. It is biological, and it starts with NAD+, the molecule central to how every cell produces energy.  

Nuchido TIME+ is a clinically studied NAD+ supplement formulated to support the cellular energy systems that chronic stress places under pressure. 

Media image 1

How Chronic Stress Increases NAD+ Demand

When the body perceives stress, it triggers a cascade of protective responses. Cortisol is released, inflammation increases, and DNA repair mechanisms are activated. All of these are energy-intensive processes that draw heavily on NAD+ to function. 

Under short-term stress, this is manageable. The problem arises with chronic stress, where demand remains elevated over weeks or months. Chronic inflammation activates enzymes called PARPs, which consume NAD+ rapidly as part of the DNA damage response. At the same time, CD38, another NAD+-consuming enzyme, increases its activity under inflammatory conditions. They create a level of NAD+ consumption that the body's production capacity struggles to match. 

Media image 1

The NAMPT and Salvage Pathway Connection

The body replenishes NAD+ primarily through the salvage pathway, in which the enzyme NAMPT (nicotinamide phosphoribosyltransferase) recycles NAM, a byproduct of NAD+ consumption, back into fresh NAD+. This recycling loop is the main source of NAD+ in your cells. 

Chronic stress disrupts this in two ways. First, elevated consumption from PARP and CD38 activity generates more NAM than the salvage pathway can efficiently process. Second, NAMPT activity itself declines under conditions of sustained inflammation and oxidative stress, reducing the cell's capacity to recycle NAD+ at the very moment demand is highest. NAD+ levels fall, and with them, the cellular energy available to every tissue in the body. 

Why Post-Stress Energy Crashes Are Not Just Mental

  • The exhaustion that follows prolonged stress is often described as burnout. The emotional component is real, but so is the physical one. When NAD+ levels fall, mitochondria operate less efficiently, producing less ATP, the form of energy cells actually run on. Less ATP means less available energy for every process in the body, from physical movement to cognitive function. 
  • This is why post-stress fatigue often feels different from ordinary tiredness. It does not resolve fully with sleep or a restful weekend. The cellular energy deficit persists until NAD+ levels are restored and the salvage pathway is functioning effectively again.

How Restoring NAD+ Supports Cellular Resilience

Supporting NAD+ levels during and after periods of stress gives the body's cellular systems the resources they need to maintain and recover normal function. Healthy NAD+ levels support several processes directly relevant to stress recovery:

ATP production

NAD+ is a critical for mitochondrial energy production, helping cells sustain output even under increased demand.

DNA repair

Stress-induced DNA damage is repaired by PARP enzymes that depend on NAD+. Adequate supply supports this repair without depleting energy available for other functions.

Inflammatory resolution

Once a stressor has passed, NAD+ supports the pathways that help bring inflammation back down, enabling recovery rather than prolonging immune activation.

SUPPORT YOUR CELLULAR ENERGY WITH NUCHIDO TIME+
0 days
0 hours
0 mins
0 secs
BUY NUCHIDO TIME+

What Helps Support Energy During and After Stress

Managing the Stress Load 

Sustained sleep, regular movement, and genuine rest all reduce the inflammatory signalling that drives PARP and CD38 activity. These are not incidental lifestyle factors; they directly affect the rate at which NAD+ is consumed. See also how NAD+ connects to stress and energy in young professionals. 

Nutritional Support

B vitamins, zinc, and polyphenol-rich foods including green tea, parsley, and citrus support the cofactors involved in NAD+ production and can help to lower inflammation. During periods of elevated stress, dietary quality often declines at precisely the moment the body needs these nutrients most. 

NAD+ Supplementation

Where lifestyle support is not enough, targeted NAD+ supplementation may help restore cellular energy systems more directly. Nuchido TIME+ activates NAMPT to support the salvage pathway, contains ingredients that help reduce the inflammatory NAD+ consumption driven by CD38 and PARP activity, and supplies nicotinamide as a direct precursor. It is the only NAD+ supplement clinically proven in a human trial to restore the body's natural NAD+ production pathway. View our clinical evidence. 

Testimonials

"Loving your Nuchido TIME+ supplement. Only been a few months but feeling a noticeable difference in increased energy. Great complement to a healthy lifestyle and diet."
@ejtoner
"Nuchido TIME+ gave me a second chance at reclaiming my social life and health. A truly amazing product!"
@joshwafigaroa
"I am a fitness instructor, just turned 50, constantly active and this product has helped me so much with muscle recovery, fatigue and overall health. A great investment in my health and wellbeing."
Joanne Neale
"This has been life changing for me and my perimenopausal symptoms. It’s actually mind blowing. Thank you so much for developing this!"
Susan Wintoniw

    THE TIMES+

    Read our blogs to understand how aging affects cellular energy, muscle fatigue and repair.

      FAQs

      Why does chronic stress make you so tired?

      Chronic stress activates PARP and CD38 enzymes that consume NAD+ at an accelerated rate, while also suppressing NAMPT, the enzyme responsible for recycling it. When NAD+ levels fall, mitochondria produce less ATP and the body has less energy available for every function, from cognitive performance to physical recovery.

      What is the connection between stress and NAD+?

      Stress raises NAD+ demand through DNA repair and inflammatory responses, while reducing the efficiency of the salvage pathway responsible for replenishing it. This means NAD+ levels can fall significantly during sustained stress, with effects on energy that persist after the stressor has passed.

      Why does post-stress exhaustion last longer than the stress itself?

      Because the underlying cause is cellular. Once NAD+ levels fall and NAMPT activity is suppressed, recovery depends on restoring both. Sleep addresses surface tiredness but does not directly accelerate the biochemical processes involved in NAD+ replenishment.

      Can NAD+ supplementation support recovery from stress?

      Supporting NAD+ levels may help maintain the cellular energy systems that stress depletes. Nuchido TIME+ is clinically proven to increase NAD+ levels and support the NAMPT-driven salvage pathway. Its formula also includes ingredients that help reduce the inflammatory NAD+ consumption associated with chronic stress. Nuchido TIME+ has also been clinically proven to increase energy levels and improve sleep quality, supporting recovery from stress.

      How is stress-related fatigue different from ordinary tiredness?

      Ordinary tiredness typically resolves with adequate sleep. Stress-related fatigue reflects a deeper imbalance in cellular energy production. When NAD+ is depleted and NAMPT activity is reduced, energy systems continue to underperform until that deficit is addressed at the cellular level.