Longevity used to be a topic for scientists and billionaires. Now it’s a regular part of the conversation for professionals who want to stay productive and healthy for longer. Two terms come up again and again: biological age and AKG. Here’s what they mean and how to think about them without falling for the hype.

What Is Biological Age?

Your chronological age is the number of birthdays you’ve had. Your biological age is an estimate of how old your body behaves. Researchers calculate it using patterns in your DNA, known as epigenetic clocks, or by combining standard blood markers such as glucose, inflammation and kidney function into a single score.

The idea is simple. Two people born in the same year can age at very different rates, and biological age tries to capture that gap. If you want a quick, free starting point, the calculator at SDAI BioAge gives an estimate based on lifestyle and health inputs.

Why It Matters for Professionals

Long hours, poor sleep and constant stress all take a toll. Biological age gives you a way to see whether your habits are helping or hurting over time. It won’t replace a doctor’s assessment, but it can be a strong motivator to change.

This interest in preserving health for the future isn’t new. Families have been thinking long term for years, as our look at the benefits of stem cell banking shows. Longevity science simply applies that mindset to adults.

What Is AKG?

Alpha-ketoglutarate (AKG) is a molecule produced naturally in the body during the Krebs cycle, the process that turns food into energy. It also plays a role in how genes are switched on and off. Levels appear to drop as we age, which is why researchers became interested in topping them up.

What the Research Shows So Far

• Animal studies. In 2020, researchers reported in Cell Metabolism that middle-aged mice fed calcium AKG lived longer and had fewer signs of frailty.
• Early human data. A 2021 analysis of 42 adults using an AKG-based formula reported lower epigenetic age after several months. It had no placebo group, so it’s a signal rather than proof.
• Ongoing trials. Larger, controlled human studies are under way and should give clearer answers.

In short, the science is promising but still developing. Anyone telling you AKG is a guaranteed anti-ageing fix is getting ahead of the evidence.

How to Choose a Product If You’re Interested

If you and your doctor decide AKG is worth trying, compare products carefully. Check the form (calcium AKG is the version used in the key mouse study), the dose, third-party testing and local registration. A page with Ca-AKG supplements compared side by side can save you hours.

The Habits That Matter Most

No supplement beats the basics. The strongest evidence for a longer healthspan still points to:

1. Seven to nine hours of quality sleep.
2. Regular strength and aerobic exercise.
3. A diet rich in whole foods, fibre and protein.
4. Staying socially connected.
5. Managing stress before it becomes chronic.

Get those right, track your progress, and treat any supplement as a small extra rather than the main event.

This article is for general information and isn’t a substitute for medical advice.

Frequently Asked Questions

Can biological age really be lower than my actual age?

Yes. Biological age estimates how your body is ageing based on biomarkers, so it can sit above or below your calendar age depending on genetics and lifestyle.

Is AKG proven to slow ageing in humans?

Not yet. Animal studies are encouraging and early human data is interesting, but large controlled trials are still needed before firm conclusions can be drawn.

How often should I check my biological age?

Most people retest every six to twelve months. Changes happen slowly, and different tests can give different results, so consistency matters.