Health, 14–17 years — 20 topics · MyLeoNes™ Kuks
20 health topics written for 14–17 years — not a older text simplified. In teaching order, each a deck of five cards: the idea, why it exists, a worked example, the common trap and where you meet it.
Health · 14–17 years
Your body clock and sleep
How light, timing and hormones help set sleep and wakefulness.
The stress response
Why the body reacts to pressure, and how recovery keeps the response useful.
How vaccination protects communities
How training the immune system can reduce illness and interrupt transmission.
Why antibiotics do not cure viruses
The difference between bacterial and viral infections, and why misuse creates resistance.
How the body controls blood sugar
Your cells need glucose for energy, but too much or too little in the blood can cause trouble. Insulin and another hormone help keep the amount within a safe range.
How to read a medicine dose
A medicine label gives more than a number: it names the active ingredient, its strength and how often it may be taken. Reading all three prevents accidental double doses and other avoidable harm.
Consent and bodily autonomy
Consent means that each person freely agrees to a particular touch, activity or medical decision. It must be informed, specific and possible to change; silence, pressure or an earlier yes do not replace it.
How addiction changes reward learning
Addiction is not just a bad habit or a lack of willpower. Repeated exposure to a substance or behaviour can train the brain’s reward and habit systems, making urges stronger and stopping harder.
Inflammation and fever
How the body reacts when tissue is damaged or germs enter, and why symptoms can be useful signals rather than the illness itself.
The menstrual cycle
How hormone changes prepare the reproductive system, why cycles vary, and how menstruation fits into the larger pattern.
Preventing and testing for STIs
How sexually transmitted infections spread, how barriers and testing reduce uncertainty, and why many infections have no obvious symptoms.
Recognising a concussion
How a hit or sudden movement can temporarily disturb brain function, and what to do when signs appear after sport or an accident.
How the heart and blood vessels deliver oxygen
Learn how the heart, blood and blood vessels work together to supply cells and carry away waste.
How loud sound can damage hearing
Understand why volume, time and distance matter when protecting the delicate sensory cells in your inner ear.
How to compare food labels
Use serving sizes and values per 100 grams to make fair comparisons instead of judging a food by one headline claim.
First aid for severe bleeding
Learn the immediate actions that can slow dangerous bleeding while professional help is on its way.
How the kidneys balance water and salts
Your kidneys do more than make urine. They constantly adjust water, salts and waste in your blood, helping cells work properly even when you drink, sweat or eat different foods.
How the lungs exchange gases
Breathing is more than moving air in and out. Deep inside the lungs, oxygen crosses into the blood and carbon dioxide crosses out, because thin surfaces and tiny blood vessels make that exchange possible.
How alcohol changes judgement and reaction
Alcohol affects the brain before a person necessarily looks drunk. It can slow reactions, weaken judgement and reduce coordination, making ordinary choices and risks harder to assess accurately.
How talking therapy can change unhelpful thought patterns
Thoughts can feel like facts, especially when anxiety or low mood is strong. A talking therapy can help someone notice patterns, test them against evidence and practise different responses, without pretending that every problem is simply a matter of attitude.
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