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The first medical description of pernicious anaemia is from 1821. It is written by Dr James Combe and describes a previously well 47 year old corn-merchant who presented with pallor, weakness, and neurological symptoms. It would take over a hundred years before we would know how to treat this condition, and another decade after that to understand why the treatment worked.

Vitamin B12 is an essential component of our diet and only found in animal products. Deficiency in vitamin B12 can present with fatigue, anaemia (macrocytic), and neurological symptoms. The most at risk from a dietary perspective are vegetarians, vegans, and the elderly. Patients may also have an autoimmune condition (pernicious anaemia) that interferes with gastric parietal cells and intrinsic factor; the way our body can absorb vitamin B12 from our diet.

This is the story of vitamin B12.

Our special guest:

Our special guest is Professor Ken Sikaris who is a chemical pathologist and Director of Chemical Pathology at Dorevitch Pathology.

The first medical description of pernicious anaemia is from 1821. It is written by Dr James Combe and describes a previously well 47 year old corn-merchant who presented with pallor, weakness, and neurological symptoms. It would take over a hundred years before we would know how to treat this condition, and another decade after that to understand why the treatment worked.
Vitamin B12 is an essential component of our diet and only found in animal products. Deficiency in vitamin B12 can present with fatigue, anaemia (macrocytic), and neurological symptoms. The most at risk from a dietary perspective are vegetarians, vegans, and the elderly. Patients may also have an autoimmune condition (pernicious anaemia) that interferes with gastric parietal cells and intrinsic factor; the way our body can absorb vitamin B12 from our diet.
This is the story of vitamin B12.
Our special guest:
Our special guest is Professor Ken Sikaris who is a chemical pathologist and Director of Chemical Pathology at Dorevitch Pathology.

Welcome to the This Medical Life podcast. Our mission is to share stories about the triumphs and tragedies of diseases and illnesses from ancient times up until what we know today. It is about those scientific and medical minds who came before us and how, every single day, we stand on the shoulders of giants. This is a podcast about the stories of medicine.


Hosted by Dr. Travis Brown and Steve Davis, our target audience is General Practitioners, medical students, and other health professionals. We hope to educate, inspire and celebrate those who choose to care for others in their profession. From experience, we know that our audience extends beyond these fields and would like to welcome anyone to listen. The stories of those who came before us are nothing short of remarkable and we hope you enjoy them as much as we do.

Production by Tim Whiffen

Design by Tom Buzz

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