biology

**__Drugs__**
 * The three stages of drug testing are:**
 * __Toxicity (kill cells)-__animal testing moved on to human cell lines
 * __Efficacy (effective)__- does it actually treat the symptons associated with the disease.
 * __Dosage__ - what is the correct dose for age/sex/size

__**Drugs in sport**__ High altitude training is useful because up high where they train there are low levels of O2 (oxygen) this increases amount of red cells (they carry more oxygen). This is where they take the red cells and put them in plasma to freeze them but before racing they take them out and the red cells are injected back into the body. This is banned!
 * Blood doping:**
 * __**High altitude training**__(ok not banned)
 * Cyclists are banned for EPO injection (EPO hormone that promotes red cell growth
 * __**Storing blood**__
 * __**Doping**__
 * **Diretics rapid fluid loss -**This makes you lighter to compete.
 * **Anatolic steroids -**It is a class C drug. For males the sideaffects are that they might grow breasts, they may become infertile and it can cause testes to become very small.
 * You could have very poor sleep
 * More aggressive
 * Affects growth
 * They can make your muscle mass increase
 * For females the sideaffects are- a deep voice,facial hair,more spots and may cause shrinking breasts.

__**Drugs and their use s**__
 * __**Legal status:**__
 * CANNABIS:
 * The side effects of cannabis are schizopenia this mainly occurs with young people
 * People use cannabis because they say it makes them feel better
 * It can cause multiple sclerosis
 * Cannabis can make you feel relaxed and happy
 * The drug can cause bronchitis and lung cancer.
 * Taking cannabis can also lead to the use of other drugs
 * Cannabis based drugs are licensed in the uk by doctors.
 * When taking cannabis your heart rate increases and so does your blood pressure.
 * It can affect your hand and eye coordination it makes it hard to judge distances so it makes you unable to drive and can effect your work
 * For men taking cannabis it can reduce your sperm count/mobity to do things in life, and for women it can reduce or affect ovulation.
 * It can make you chatty or get the munchies.
 * It is also used as a pain relief it is an active ingredient THC
 * Cannabis can make you hullucinate.
 * It alters your neuro transmitters.

Our information is from our exercise books and text book. by philippa watkins and chiara cavanagh