health

• Communicable disease can be passed from one organism to another
• Non communicable diseases are genetical
• If you are affected by one disease you have a high chance of becoming susceptible to another disease
• Communicable diseases are caused by pathogens
• Cholera- bacterium from contaminated water, symptoms of diarrhoea, prevented by drinking clean water
• Tuberculosis- bacterium airborne, symptoms of coughing and lung damage. To prevent spread avoid large crowds and practice good hygeine.
• Malaria- a protist, misquotes carry and pass to humans, damages red blood cells and liver. To avoid use nets and insect repellent
• Chalara Ash dieback- fungus in ash trees, carried through air and wind. Spread when trees are moved.
• HIV is an STI that attacks white blood cells and weakens immune system.
• HIV leads to aids when untreated and the immune system deteriorates and eventually falls.
• Chlamydia is a bacterial infection (STI), behaves like a virus but can only reproduce inside a hosts cells.
• Chlaumidya doesn’t really have symptoms but can cause infertility.
• To prevent spread of STIs wear a condom, have regular screenings or avoid sexual contact
• HIV is spreads through fluids: semen, vagina fluids and blood.
• Drug users avoid sharing needles to prevent spread of HIV
• HIV can be spread to baby from mother, mendicant can be taken to prevent this
• Health is a state of physical, mental and social well being
• Life factors can increase non communicable diseases.
• smoking increase risk of cardiovascular disease and heart attack
• Nicotine increases blood pressure and damages artery walls
• Nicotine builds up fatty deposits and restricts blood flow.
• Too many or too less nutrients lead to malnutrition and obesity
• Malnutrition can lead to scurvy ( vitamin deficiency )
• Not enough exercise and having a high fat diet can lead to obesity
• Alcohol can cause liver disease due to enzymes breaking down alcohol that scar liver and leaves permanent damage
• Types of pathogens: bacteria, fungi, protist and virus
• A pathogen is a micorganism that causes disease
• Bacteria in animals: salmonella

  Becteria in plants: Agrobacterium
• Fungi in animals: athletes foot.

  Fungi in plants: rose black spot.
• Protists in animals: malaria.

  Protists in plants: downy mildew
• All pathogens infect the host, reproduce and spread from host, adapt to cause further infection
• Transmissions of pathogens: direct contact, water, airborne, unhygienic food preparation and vectors