What is biological age?

Your chronological age is simply how long you have been alive. Your biological age is a measure of how well your body is ageing at a cellular level, taking into account the health of your cells, inflammation levels, metabolic function and a range of other biomarkers.

Two people can share the same birthday and have biological ages that differ by a decade or more. One might have the cellular health of someone ten years younger. The other might show markers of accelerated ageing that increase their risk of chronic disease long before symptoms appear.

Your chronological age tells you how long you have been alive. Your biological age tells you how well you have been living.

Does genetics determine how fast we age?

This is one of the most common assumptions about ageing and one of the most empowering to challenge.

Research shows that genetic factors account for only 15 to 25 percent of how we age. The rest is shaped by lifestyle. What you eat, how you move, how well you sleep, how you manage stress and what you put into your body consistently over time.

That is not a small margin. It means the vast majority of how you age is within your influence.

What are the signs of accelerated biological ageing?

Biological ageing does not announce itself loudly. It shows up quietly in how you recover, how you feel and how your body responds to the demands of daily life.

Common signs include persistent fatigue that does not resolve with rest, slower recovery after exercise or illness, declining mental sharpness and concentration, disrupted sleep, and increased inflammation markers on blood tests.

None of these are inevitable. And all of them are influenced by lifestyle.

Can you slow down or reverse biological ageing?

Yes. And the research is genuinely compelling.

A 2021 clinical trial published in the journal Aging found that just eight weeks of targeted diet, exercise, sleep and stress management improved participants' biological age by more than three years on an epigenetic clock. Eight weeks. Three years.

Separately, research shows that people who exercise 150 minutes per week have ageing markers nine years younger than sedentary people.

Lifestyle changes can slow the pace of biological ageing and in some cases reverse it. It is not fixed. It does not require dramatic intervention. Just consistent daily habits done well over time.

What lifestyle habits have the biggest impact on biological age?

The research consistently points to the same five areas.

Movement. Regular physical activity is the single most evidence-backed behaviour for slowing biological ageing. It improves cardiovascular health, maintains muscle mass, reduces inflammation and supports metabolic function. Even moderate, consistent movement makes a measurable difference.

Nutrition. Long term dietary patterns matter more than short term changes. A diet rich in whole foods, plant diversity and quality protein supports the cellular processes that underpin healthy ageing. Ultra-processed foods are consistently associated with accelerated biological ageing.

Sleep. Chronic sleep deprivation is one of the fastest ways to accelerate biological ageing. Poor sleep disrupts hormonal balance, increases inflammation and impairs the cellular repair processes that happen overnight. Quality matters as much as quantity.

Stress management. Long term stress exposure affects cortisol levels, immune function and cellular ageing. People with strong social connections consistently show younger biological ages than those who are socially isolated.

Targeted supplementation. Certain nutrients and compounds play a direct role in the cellular processes involved in ageing. NAD+ is vital coenzyme that has a role in cellular energy production, DNA repair and tissue regeneration and declines significantly with age. Collagen supports structural integrity in skin, joints and connective tissue. Creatine is involved in ATP production and supports muscle mass preservation, one of the strongest predictors of healthy ageing. Magnesium is another crucial nutrient, supporting sleep quality and cellular function.

What does NAD+ have to do with ageing?

NAD+ is a coenzyme found in every cell of the body. It plays a central role in cellular energy metabolism and DNA repair, two processes that are fundamental to healthy ageing.

NAD+ levels decline significantly with age, dropping by around 50 percent between your 20s and your 50s. This decline is associated with reduced cellular energy, slower repair and many of the hallmarks of biological ageing.

Supporting NAD+ levels through supplementation, particularly with clinically studied forms like Niagen, is one of the more direct ways to support cellular health as you age.

What role does collagen play in biological ageing?

Collagen is the most abundant protein in the body. It provides structural support to skin, joints, bones and connective tissue. And like NAD+, collagen production declines with age, beginning in our mid-20s and accelerating through our 40s and 50s.

The visible signs of this decline are well known. Changes in skin texture, elasticity and firmness. But the less visible effects on joint health, muscle integrity and recovery are equally significant for how well we age.

Supporting collagen production daily through hydrolysed marine collagen is one of the most practical things you can do for long term structural health.

Is spring a good time to start building healthy ageing habits?

There is genuine science behind why spring feels like a natural reset. As daylight increases, the brain produces more serotonin, the neurotransmitter associated with mood, motivation and energy. Behaviour change feels less effortful. New habits are easier to form and maintain.

Research shows that 80 percent of New Year's resolutions fail by mid-February, not because people lack willpower, but because January is a difficult environment for sustained change. Spring offers the biological and psychological conditions that make habits more likely to stick.

If your health intentions have slipped, spring is not too late. It might actually be the best time to start.

Where to start with healthy ageing at Matakana Superfoods

The science points clearly to daily consistency over dramatic intervention. A few well-chosen habits, done regularly, compound into something meaningful over time.

Our healthy ageing range brings together the products most directly supported by the research. From NAD+ supporting Niagen to Marine Collagen, Creatine Synergy, Magnesium Glycinate+ and Astragalus Root. Each one chosen for its evidence base, not just its popularity.

Start with one. Build from there.

Shop the Healthy Ageing Collection

Always read the label. Follow the directions for use.