For many people, spring represents a natural moment of renewal and a return to balance. With lengthening days and more sunlight comes the desire to reorganize daily habits, improve well-being, and recover the energy lost during the winter months.
Far less often, however, do we pay attention to the fact that the body also requires regeneration at the cellular level. Winter is a period of increased burden on the organism. Limited physical activity, reduced exposure to sunlight, and a diet richer in highly processed foods can lead to deterioration of mitochondrial function, increased oxidative stress, and greater accumulation of damaged cellular structures.
Senescent cells also accumulate in tissues — cells that have lost the ability to divide but remain metabolically active and intensify inflammatory processes. Modern science indicates, however, that the body possesses natural regenerative mechanisms that can be supported through proper diet, physical activity, and selected bioactive substances.
Why does winter burden the body?
The influence of seasonality on bodily function has been confirmed in numerous scientific studies. It has been shown that the expression of thousands of genes changes with the seasons, and that during winter, processes associated with inflammation and reduced regeneration become more pronounced. The most important factors that worsen the body's condition in winter include:
- limited physical activity,
- vitamin D3 deficiency resulting from reduced exposure to sunlight,
- a diet rich in simple sugars and processed foods,
- higher levels of oxidative stress,
- disruption of the circadian rhythm and sleep quality.
The consequences of these changes may include chronic fatigue, decreased concentration, impaired immunity, and slower physical recovery.
Three pillars of cellular regeneration
1. Autophagy — natural cellular recycling
Autophagy is the process responsible for removing damaged cellular components, such as defective proteins and dysfunctional mitochondria. This mechanism plays a key role in maintaining cellular balance and protecting against aging processes.
Autophagy is intensified during fasting, physical exercise, and under the influence of selected bioactive compounds. One of the best-studied activators of this process is spermidine — a natural polyamine present in the body and in certain foods. Research suggests that it may support cardiovascular function, improve mitochondrial condition, and promote processes associated with longevity.
2. Senolysis — elimination of senescent cells
Senescent cells are cells that have lost the ability to divide but have not been removed by the body. Accumulating in tissues, they secrete pro-inflammatory factors that can negatively affect neighboring cells and accelerate aging processes.
The process of selectively removing such cells is referred to as senolysis. One of the most thoroughly studied natural compounds with senolytic activity is fisetin — a flavonoid found in strawberries, apples, and onions, among others. Experimental studies suggest that it may support the reduction of chronic inflammation and improve tissue function.
3. Restoring NAD+ levels
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme essential for cellular energy production, DNA repair, and the activation of sirtuins — proteins associated with longevity processes. With age, NAD+ levels gradually decline, which can lead to deterioration of mitochondrial function and a reduction in the body's regenerative capacity.
Nicotinamide riboside (NR) is among the most thoroughly studied NAD+ precursors and exhibits high bioavailability. Its supplementation may support energy metabolism and improve cellular function.
Key compounds supporting regeneration
Spermidine — autophagy activator
Spermidine occurs naturally in the body, but its levels decline with age. The richest dietary sources include wheat germ, fermented products, and aged cheeses. Its primary action involves activating autophagy processes and supporting the elimination of damaged cellular structures. Research also suggests a beneficial effect of spermidine on cognitive function and the cardiovascular system.
Recommended dosage: 1–2 mg daily, preferably in the evening.
Fisetin — selective senolytic
Fisetin is a flavonoid found in strawberries and apples, among others. In studies, it demonstrated the ability to selectively support the elimination of senescent cells. Due to its mechanism of action, fisetin is most commonly used in a pulsed regimen — taken over several consecutive days at defined intervals.
Recommended dosage: 500–1000 mg daily for 2–3 consecutive days per week. Best taken with a meal containing fats.
Nicotinamide Riboside (NR)
Nicotinamide riboside supports NAD+ synthesis, improving mitochondrial function and cellular energy production. Research indicates that NR supplementation can increase NAD+ levels in tissues, support regeneration, and improve the body's metabolic capacity.
Recommended dosage: 300–500 mg in the morning, preferably with a meal.
30-day regeneration plan — action schedule
The plan is divided into four phases, each targeting a different biological objective. The gradual introduction of individual components allows for the sequential activation of repair mechanisms and ongoing observation of the body's responses.
Week 1 — activation of basic regenerative processes
Goal: Initiating autophagy and reducing inflammation.
Supplementation:
- spermidine — 1–2 mg in the evening,
- NR — 300 mg in the morning,
- vitamin D3 + K2,
- omega-3 fatty acids.
Lifestyle:
- 12-hour overnight fast,
- daily outdoor walk,
- regular sleep schedule.
Week 2 — active senolysis
Goal: Supporting the elimination of senescent cells.
Supplementation:
- spermidine — continued,
- NR — 300–500 mg,
- fisetin — for 3 consecutive days,
- omega-3.
Lifestyle:
- adequate hydration (at least 2.5 l of water),
- introduction of resistance training 2 times per week.
Week 3 — mitochondrial rebuilding
Goal: Improving mitochondrial function and the body's energy regeneration.
Supplementation:
- spermidine,
- NR — 500 mg,
- coenzyme Q10,
- magnesium.
Lifestyle:
- moderate endurance training,
- brief cold exposure, e.g. a cool shower.
Week 4 — consolidating the results
Goal: Stabilizing the effects of regeneration and assessing well-being and energy levels.
Supplementation:
- spermidine,
- NR,
- second fisetin cycle,
- magnesium,
- omega-3,
- vitamin D3 + K2.
Lifestyle:
- monitoring sleep quality and energy levels,
- maintaining regular physical activity.
Effects of the regeneration plan
The effects of implementing the regeneration plan appear gradually and depend on lifestyle and the current state of the body. The most commonly observed benefits include:
- improved energy levels and reduced fatigue,
- better sleep quality,
- improved concentration and reduction of so-called "brain fog",
- faster recovery after physical exertion,
- improved skin condition,
- reduced intensity of chronic inflammation.
The first effects may appear after 1–2 weeks, while more complete improvement in overall body function typically requires several weeks of consistent adherence to the recommendations.
The importance of diet during regeneration
The effectiveness of regeneration depends not only on supplementation, but also on nutrition. During the body's reset period, it is worth limiting:
- simple sugars and highly processed foods,
- alcohol,
- frequent snacking between meals.
At the same time, it is worth increasing the consumption of products rich in natural bioactive compounds, such as:
- green vegetables,
- berries,
- fermented products,
- fatty sea fish,
- nuts and olive oil.
What can impair regeneration?
The most important factors limiting the effectiveness of the regeneration process include:
- chronic sleep deprivation,
- high stress levels,
- excessive alcohol consumption,
- a diet rich in simple sugars,
- lack of physical activity.
Eliminating these factors is just as important as supplementation itself.
A repeatable scheme within the annual cycle
The spring regeneration protocol is best treated as part of a year-round strategy for supporting the body. The scope of supplementation and regeneration may vary with the seasons.
- Spring: full 30-day regeneration plan with two fisetin cycles.
- Summer: maintenance supplementation (spermidine and NR) and greater natural physical activity.
- Autumn: shortened 14-day plan with one fisetin cycle as preparation for winter.
- Winter: basic body support (vitamin D3 + K2, magnesium, omega-3, NR) without intensive senolysis.
Eliminating these factors is just as important as supplementation itself.
Summary: spring begins in the cell
Spring is a good time to support the body's natural regenerative processes. Appropriately chosen nutritional measures, physical activity, and substances such as spermidine, fisetin, and nicotinamide riboside can support autophagy, mitochondrial function, and repair processes occurring at the cellular level. Introducing gradual changes to the daily routine can translate into improved energy levels, sleep quality, concentration, and overall well-being after the winter period.
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