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| Question | Answer |
| obesity | large amounts of fat formed around the sin and under the organs |
| cardiovascular disease | a result of the circulatory system functioning poorly |
| BMI (body mass index) | used to predict the amount of fat on the body (weight/height2) |
| waist to hip ratio | gives a better method of measuring abdominal fat |
| communicable disease | caused by pathogens and can therefore be passed from one person to another |
| non-communicable disease | cannot be passed on, caused by a problem or fault within the body or lifestyle of an individual |
| antibiotic | a medicine used to kill bacteria or stop it from growing (inhibit cell processes) |
| antibiotic resistance | when a bacteria has evolved so it can no longer be killed by the antibiotic that used to work on it |
| antibody | a protein that sticks to a pathogen to help the immune system to destroy it |
| antigen | protein on the surface of a bacterial cell |
| antiseptic | a substance used to kill microbes on the surface of a body or equipment |
| clinical trials | when a medicine is tested to make sure it is safe and has no side-effects |
| deficiency disease | a disease caused by a lack of a particular nutrient |
| epidemic | when a communicable disease spreads quickly |
| genetic disorders | a disease caused by faulty alleles of genes |
| health | complete social, mental and physical wellbeing |
| herd immunity | the theory that some unvaccinated people are safe because a large sum of people have been vaccinated |
| hydrochloric acid | the acid in your stomach which kills the bacteria in your food |
| immune | when you are protected from a particular pathogen so you cannot get it again |
| immune system | protects the body from communicable diseases |
| inhibit | to stop something from happening |
| lysozyme | an enzyme which breaks down the cell wall of a bacterial cell to kill the pathogen |
| malnutrition | when you get too little/much of a certain nutrient in your diet |
| MMR | vaccine for measles, mumps and rubella |
| secondary response | releasing lots of antibodies quickly the second time the same pathogen attacks you |
| stent | a small metal mesh tube to open a blocked blood vessel |
| STD/I | sexually transmitted disease/infection |
| vector | when an organism carries a pathogen from one person to another (animal vector) |
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