Remember when you could pull an all-nighter and bounce back like nothing happened? Now, an 8pm movie on the couch feels ambitious. You are not alone — and it is not just "getting older." There is a biological reason, and it is called NAD+.
From my conversations with busy professionals across Singapore and Southeast Asia, fatigue is the number one complaint I hear. Not the "did not sleep well" kind, but the deep, stubborn tiredness that follows you everywhere. One client, a 42-year-old finance executive, told me: "I used to have endless energy. Now I am drained by 3pm no matter what I do." After learning about NAD+, we focused on supporting her cellular energy pathways. Within weeks, she noticed real change. Here is what is happening inside your cells.
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every living cell. Think of it as a tiny helper that makes two critical things happen: energy production and cellular repair.
When NAD+ levels are high, your cells hum efficiently. When they drop, fatigue, brain fog, and slower recovery creep in.
Your body naturally produces NAD+ from precursors like niacin, tryptophan, and nicotinamide riboside (NR). But as you age, several things go wrong:
By age 40, your NAD+ levels can be half of what they were in your 20s. By 60, even lower. This decline is directly linked to age-related fatigue, metabolic slowdown, and reduced cellular resilience.
Yes. While you cannot stop ageing, you can support your NAD+ levels through lifestyle changes and targeted supplementation.
Fasting increases NAD+ levels by activating a pathway that boosts production. Even a 12-14 hour overnight fast can help. Many of my readers in Singapore find that simply skipping late-night snacks and having an earlier dinner makes a noticeable difference.
Regular exercise, particularly HIIT, has been shown to increase NAD+ levels in muscle tissue. You do not need a gym membership. A 15-minute routine at home with bodyweight exercises works wonders for your cellular health.
Both alcohol and UV radiation increase NAD+ consumption. Your body uses up NAD+ to repair the damage they cause. Cutting back preserves your NAD+ for essential functions like energy production and DNA repair.
NAD+ is too large to be absorbed directly from a supplement. Instead, you take precursors — smaller molecules your body converts into NAD+. The two most studied are NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside). Both are available as supplements. Quality matters — look for third-party tested products from reputable brands.
Animal studies have consistently shown that boosting NAD+ improves mitochondrial function, enhances physical performance, and protects against age-related decline. Human studies are still emerging, but early results are promising. One study found that NR supplementation increased NAD+ levels in healthy middle-aged adults. Another showed improved muscle function and reduced fatigue in older adults.
Is NAD+ a miracle cure? No. But supporting NAD+ levels is one of the most evidence-backed strategies for cellular energy and healthy ageing right now.
NAD+ precursors like NMN and NR are generally considered safe for healthy adults. However, long-term human studies are still limited. Always talk to your doctor before starting any new supplement, especially if you are on medication, pregnant, breastfeeding, or have a medical condition.
That afternoon slump you have been blaming on your coffee wearing off? It might be your NAD+ levels talking. The good news is you are not powerless. Small, consistent changes — better sleep, regular movement, smart supplementation — can make a real difference in how you feel every day.
Start with one thing this week. Maybe it is an earlier dinner. Maybe it is a 15-minute walk. Then see how you feel. Your cells will thank you.
Ask Elaine how this applies to your goals and routine — free, no pressure.