Articles
Germ Warfare and the Siege of Fort Pitt
Germ warfare is defined as "the use of biological toxins or infectious agents with the intent to kill or incapacitate as an act of war." These biological agents are quite literally used as deadly living weapons. Germ warfare is by no means a modern concept, and...
Cytochrome p450 Enzymes and Drug Metabolism
Many drugs are metabolised in the liver. Drugs are either metabolised by phase I reactions (oxidation, reduction, or hydrolysis) or phase II reactions (e.g. glucuronidation). Phase I reactions are mainly carried out by the cytochrome P450 family of isoenzymes, of...
Building a Career in Global Health and Expedition Medicine
Building a career in global health and expedition medicine - the good, the bad, and the stuff no one tells you! Can I be a neurosurgeon and travel the world with my work? I’d like to do paediatrics but with some humanitarian work- is that possible? Will I still be...
Understanding Homeostasis
Homeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and pH balance. The two body systems that are responsible for...
HELLP Syndrome
HELLP syndrome is a pregnancy complication that usually presents in women who have pre-eclampsia or eclampsia. Affected women also show signs of liver damage and abnormalities in blood clotting. HELLP syndrome is characterised by: Haemolysis ELevated liver enzymes Low...
What is Evidence-based Medicine?
Evidence-based medicine is the term used to describe the process of systematically reviewing, appraising and using the findings of clinical research to assist with the delivery of optimum clinical care to patients. The most commonly quoted definition of evidence-based...
The Story of Penicillin
I sometimes take antibiotics for granted. As a doctor, I have prescribed thousands of courses of antibiotics throughout my career. I have taken many courses myself also, and they almost certainly saved my life when I perforated my appendix in my mid-20s. Antibiotics...
The Menopause
The menopause is the biological stage in a woman’s life when menstruation permanently ceases. It marks the end of the female reproductive life. It occurs with the final menstrual period and is usually diagnosed clinically after 12 months of amenorrhoea. In the UK, the...
Maternal Changes During Pregnancy
Pregnancy is a period of profound physiological transformation. The mother’s body undergoes wide-ranging adaptations across virtually all organ systems, designed to support foetal growth, prepare for labour, and safeguard maternal well-being. These changes are...
Pregnancy
Pregnancy, also referred to as gestation, is the period during which one or more offspring develop inside the uterus. It typically lasts around 40 weeks from the first day of the last menstrual period (LMP) and is divided into three trimesters. The first...
