📖 Global Health Literacy
Medical terms, explained like you are a person — not a textbook. Built for non-native speakers and anyone who wants medicine without the jargon.
Hypertension
High blood pressure — the force of blood against artery walls is too high for too long. The "silent killer" because it usually has no symptoms.
💡 Takeaway: Get it checked regularly; lifestyle (salt, movement, sleep) matters a lot.
Cholesterol
A waxy fat in your blood. "Good" HDL helps clear it away; "bad" LDL can build up in arteries. The balance matters more than the total.
💡 Takeaway: A blood test tells you your numbers — know them.
BMI
Body Mass Index — a rough height-to-weight ratio. It is a screening number, not a diagnosis. Muscular people can have "high" BMI and be perfectly healthy.
💡 Takeaway: Use it as one signal, not a verdict.
Immunity
Your body's layered defence: barriers (skin, mucus), fast-acting cells (neutrophils, NK cells) and memory cells (B and T lymphocytes) that remember past infections.
💡 Takeaway: Sleep, nutrition, exercise and vaccination are the four pillars of strong immunity.
Antibiotics
Drugs that kill bacteria — NOT viruses. They do nothing for colds and flu, and overuse creates resistant "superbugs".
💡 Takeaway: Take them exactly as prescribed, never share them.
Inflammation
Your body's alarm-and-repair system: blood flow and white cells rush to an area (redness, heat, swelling, pain). Acute inflammation heals; chronic inflammation (from obesity, smoking, poor diet) quietly damages organs.
💡 Takeaway: You can't feel most chronic inflammation — which is why healthy habits and check-ups matter.
Metabolism
All the chemical reactions that keep you alive — turning food into energy, building and repairing tissue. Your "metabolic rate" is how fast your body burns energy at rest.
💡 Takeaway: Muscle raises your resting metabolism; crash diets lower it — another reason to lift weights and avoid starvation diets.
Blood Sugar (Glucose)
The sugar your cells burn for energy, carried in blood. Insulin is the key that lets it into cells. High fasting levels signal trouble.
💡 Takeaway: Fibre, protein and movement flatten the spikes.
Placebo
A treatment with no active ingredient. The placebo effect — feeling better because you expect to — is real and powerful; that is why drug trials use blind comparisons.
💡 Takeaway: Feeling better after a remedy doesn't prove the remedy worked.
Contraindication
A reason NOT to use a treatment. Example: "contraindicated in pregnancy" = do not use it while pregnant.
💡 Takeaway: Always check contraindications before herbs or medicines.
Antioxidant
A molecule that neutralises "free radicals" (unstable molecules that damage cells). Found richly in plants, especially colourful fruit and vegetables.
💡 Takeaway: Eat the rainbow — supplements rarely beat real food.
Dehydration
Your body has too little water to work properly. Mild: thirst, dark urine, headache. Severe: confusion, rapid pulse — urgent.
💡 Takeaway: Thirst is a late signal; check urine colour instead.
Electrolytes
Minerals (sodium, potassium, magnesium) that carry electrical signals for muscles and nerves. Sweating and illness deplete them.
💡 Takeaway: Water plus a pinch of salt and some fruit covers most needs.
Probiotic
Live beneficial bacteria for your gut. Found in yoghurt, kefir, fermented foods. They help digestion and immunity — modestly.
💡 Takeaway: Food sources beat most supplements.
Chronic vs Acute
Acute = sudden and short (a sprain). Chronic = long-lasting (years). Treatments and urgency differ completely.
💡 Takeaway: Tell your clinician how long symptoms have lasted.
Antibody
A Y-shaped protein your immune system makes to grab and neutralise a specific germ. Each antibody is custom-made for one target — that's why immunity is specific.
💡 Takeaway: Antibodies are why vaccines work: they train your body to make them before the real germ arrives.
Antigen
Any substance your immune system recognises as foreign and reacts to — usually parts of a virus or bacterium, but also pollen or food proteins in allergies.
💡 Takeaway: Vaccines contain harmless antigens so your body learns the enemy without getting sick.
Acute vs chronic
Acute = fast onset, short course (like a cold or a sprain, days to weeks). Chronic = long-lasting (months to years), like diabetes, asthma or hypertension.
💡 Takeaway: Acute often needs quick care; chronic needs steady management — both are treatable.
Antibiotic resistance
Bacteria that survive an antibiotic multiply, creating a strain the drug no longer kills. Overuse and unfinished courses are the main drivers.
💡 Takeaway: Take antibiotics exactly as prescribed, finish the course, and never demand them for a virus — resistance is a global emergency.
Placebo effect
Real improvement caused by believing a treatment works — not by the treatment itself. It is a genuine biological response (the brain releases its own painkillers), not "imaginary".
💡 Takeaway: Placebo responses are why rigorous trials compare treatments against dummy pills.
Symptom vs sign
A symptom is what YOU feel (pain, nausea, fatigue). A sign is what a doctor can measure or see (fever, rash, high blood pressure).
💡 Takeaway: Tell your doctor both — symptoms guide questions, signs guide diagnosis.
Vaccination
Training your immune system with a harmless version of a germ (weakened, killed, or just a piece of it) so it reacts fast and hard to the real thing.
💡 Takeaway: Vaccines are among the safest and most effective interventions in medicine — they save millions of lives every year.
💉 Medicine, Explained
How injections, painkillers and the medicines themselves came to be — in plain language.
Injections: Types, Why They Work Faster, and What's Safe
Why some medicines are injected instead of swallowed — the routes, the needle sizes, and the safety rules that keep injections clean.
Read: Injections: Types, Why They Work… →Painkillers Explained: Paracetamol, Ibuprofen, Aspirin & the Strong Ones
The honest guide to everyday pain relief — how each drug works, when to use it, and the dose limits that keep you safe.
Read: Painkillers Explained: Paracetamol,… →How Medicines Were Discovered: From Willow Bark to Penicillin
Aspirin from a tree, quinine from a bark, penicillin from a mold, insulin from a dog — the accidental, brilliant history of drug discovery.
Read: How Medicines Were Discovered: From… →📚 More plain-language guides
Every other explainer in the health-literacy library.
Antibiotics: All Generations Explained — 1st to 4th (with Salt Names)
Cephalosporins 1st-4th generation, penicillins, macrolides and more — every class with real salt names, what it covers, and when it is used.
Read: Antibiotics: All Generations Explained… →Why Water Is the Most Important "Medicine" You Take
Your body is 60% water. Every function depends on it — here is how much you need, what dehydration does, and how to drink more without trying.
Read: Why Water Is the Most Important… →The Human Body: A Tour of the 11 Systems You Live In
Bones, muscles, heart, brain, lungs, stomach, hormones — a plain-language tour of the machine that is you, and what each system needs to thrive.
Read: The Human Body: A Tour of the 11… →Sleep: The 8-Hour Medicine You Cannot Skip
Sleep is when your brain cleans itself and your body repairs. Here is what happens when you sleep, what goes wrong without it, and how to fix it.
Read: Sleep: The 8-Hour Medicine You Cannot… →First Aid Basics Everyone Should Know
Bleeding, burns, choking, fainting, fractures and CPR — the life-saving steps any person can do before help arrives.
Read: First Aid Basics Everyone Should Know →How Vaccines Work: The Science in Plain Language
The immune system's memory, the different vaccine types, herd immunity — and why vaccines are so safe despite the myths.
Read: How Vaccines Work: The Science in Plain… →