We need raw materials and balance, not pre-packaged spare parts

The body is an intelligent producer, not a passive receiver. When we give it the right raw materials and a sustainable life rhythm, it can create the signaling molecules it needs to prevent disease, reduce inflammation, and build resilience. This is what we call homeostasis — the body’s own balance.

Why raw materials instead of finished products

Many people take supplements that contain molecules the body normally produces on its own. These can be useful in cases of illness or severe deficiency, but when we give ready‑made signaling molecules to healthy individuals, we risk suppressing the body’s own production. A more sustainable and effective alternative is to support the body’s internal factories by ensuring sufficient raw materials and the right lifestyle factors.

When we talk about serotonin and melatonin, for example, it’s not about mysticism but about simple building blocks and good conditions. The body produces these signaling molecules from other intermediates triggered by the amino acid tryptophan — and tryptophan comes from the food we eat and from gut bacteria that convert it further. When we give the gut and the body enough raw materials — for example nutrient‑dense foods rich in polyphenols, prebiotic fiber, and omega‑3 — we create the conditions for natural production at the right pace.

A Swiss study* shows that over a period of three years, biological aging was reduced by up to four months with a moderate intake of omega‑3, vitamin D, and regular exercise.

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Daylight, consistent sleep, and physical activity are just as important raw materials as food. Morning light activates the circadian rhythm, which in turn regulates when melatonin is synthesized and released. Regular movement and consistent sleep improve both gut function and hormonal balance, and they support the cells’ ability to convert raw materials into signaling molecules and energy.

Let the body produce what it needs — give it raw materials, not spare parts.

NAD+ is another example of a molecule often presented as something we need to supplement. NAD+ cannot be taken synthetically; it is a product of multiple nutritional and lifestyle factors. NAD+ is formed from B vitamins and niacin, among other things, and is required in many cellular reactions. By prioritizing a varied diet rich in B vitamins, niacin, omega‑3, prebiotic fiber, and polyphenols — combined with good sleep, regular physical activity, and reduced chronic stress — we support the body’s ability to maintain and recycle NAD+ effectively. This is why strategies that strengthen the body’s own synthesis pathways are often more sustainable than relying on pre‑packaged precursors as standard supplements.

When the body is exposed to persistent stress and inflammation, tryptophan is increasingly diverted away from the constructive synthesis pathways and into the kynurenine pathway via the enzymes IDO and TDO. This increases the production of kynurenine and reduces the formation of beneficial microbial metabolites such as IPA. The kynurenine pathway produces several pro‑inflammatory or neurotoxic intermediates, while IPA (indole‑3‑propionic acid) is neuroprotective and anti‑inflammatory and is formed when gut bacteria convert tryptophan in a health‑promoting microbial context.

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This is why stress and chronic inflammation act as saboteurs of the body’s “construction lines”: instead of tryptophan being used for serotonin, melatonin, and IPA, resources are redirected toward defense and repair through kynurenine metabolism. To restore balance, one should reduce stress and inflammation while supporting the gut microbiota and the availability of raw materials — for example through prebiotic fiber, polyphenol‑rich plants, omega‑3, sufficient sleep, and regular physical activity — so that more tryptophan can flow toward IPA, serotonin, and melatonin rather than kynurenine.

Summary

This does not mean supplements never have a place. In cases of deficiency or illness, ready‑made molecules can be necessary. But for healthy individuals seeking prevention and long‑term wellbeing, a strategy based on raw materials, regularity, and stimulation is often more sustainable and biologically sound. Give the body the materials and conditions it needs, and production will follow.

In short: support the gut and the cells with nutrient‑dense food, ensure daylight, sleep, and movement, and work purposefully to reduce stress and inflammation. Then the body’s own factories work for you — producing signaling molecules in the right amounts and at the right time.

Support the body’s own production lines with the right raw materials, balance, and activity rather than replacing them with ready‑made molecules.

*This text is written for preventive purposes and is not intended as treatment advice for diseases or conditions that require medical care.

*Source: Individual and additive effects of vitamin D, omega-3 and exercise on DNA methylation clocks of biological aging in older adults from the DO-HEALTH trial