health and disease

• health is the state of physical and mental wellbeing
• diseases can be communicable or non-communicable
• communicable disease are those can be spread from one person to another, such as measles and chicken pox
• non-communicable disease are those that cannot spread between people or between animals and people
• asthma, cancer and coronary heart disease are non-communicable diseases
• people who have problems with their immune system have an increased chance of suffering from communicable diseases
• some types of cancer can be triggered by certain viruses. e.g HPV can cause cervical cancer in women
• immune system reactions in the body caused by infection by a pathogen can sometimes trigger allergic reactions
• mental health issues can be triggered when someone is suffering from severe physical health problems. they can even affect that person's life expectancy
• there are many factors that affect health, such as: diet, stress levels and life situation