Dr Thys Heyns Aesthetics

Dr Thys Heyns

Regenerative & Aesthetic Medicine

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Wellness & Regenerative

PNOĒ Metabolic Assessment

New at Brooklyn · Dr Kate Mekler

A simple, non-invasive breathing assessment that measures how your body uses oxygen and burns calories at rest — revealing your unique metabolic physiology.

Book Your Assessment

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Precision Longevity Medicine

Meet Dr Kate Mekler

Precision Longevity & Metabolic Medicine

Dr Kate Mekler brings the PNOĒ Metabolic Health Assessment to Brooklyn from 15 July 2026. With over 20 years of medical experience across South Africa and the UK — spanning internal medicine, oncology, and public health — her focus is precision longevity: helping patients optimise their health from the inside out.

MBChB (Stell.) · MPH (UWC) · HPCSA MP 0510009
PNOĒ Certified · Advanced Cellular Medicine & Peptide Therapy (SSRP, US)

Dr Kate Mekler

Dr Kate Mekler

What This Assessment Reveals

Four dimensions of your metabolic health

Autonomic Nervous System Balance

Insight into your body's stress and recovery balance — how well you shift between activity and rest, and whether chronic stress is affecting your health.

Heart & Lung Function

How efficiently your heart and lungs work together to deliver and use oxygen — a key marker of cardiovascular fitness and overall vitality.

Cellular Efficiency & Metabolic Health

How efficiently your cells produce energy and which fuel your body prefers to burn — fat or carbohydrate — at rest. Foundational to weight and energy.

Healthy Ageing & Longevity

Insights to support long-term health, vitality, and disease prevention — helping you make informed decisions about how you age.

The Assessment

What to expect

Your assessment includes

— A 10–15 minute resting breathing test
— Real-time analysis of your metabolism
— A detailed, personalised report
— A one-on-one consultation with Dr Kate
— Tailored recommendations for your goals

How it works

— You relax comfortably in a seated position
— You breathe normally through a mask
— The device measures your oxygen and CO₂
— Software analyses your metabolic markers
— Dr Kate interprets and explains your results

Preparing for Your Assessment

A few simple steps beforehand

Fast for 6 hours before (water encouraged)

Avoid alcohol for at least 6 hours

Avoid caffeine and smoking beforehand

No strenuous exercise for 24 hours

Continue your usual medications

Wear comfortable clothing & arrive early

New at Brooklyn · From 15 July

Understand your metabolism

Book your PNOĒ Metabolic Assessment with Dr Kate Mekler. A simple test that reveals how your body truly works — and how to optimise it.

Theunette: 012 346 1552 · brooklyn@drthysheyns.co.za