Lifestyle factors like poor diet, lack of exercise, smoking, drinking alcohol, and stress can lead to some forms of cancer, heart disease and mental health problems
Throughout the 20th century, the government increased its involvement in funding medical research and treatment, passing legislation to help prevent disease and illness, and educating people about dangers to their health
Scotland was the first of the four UK nations to ban smoking in public places, through legislation passed in 2006. England, Northern Ireland and Wales followed in 2007
By the end of the 20th century, it was understood that some diseases, conditions or disorders are hereditary - which means they are passed from parents to children in genes
In 1941, America entered World War Two and the American government realised the potential importance of penicillin for treating wounded soldiers and funded its mass production
Medicine in modern Britain has seen great advances in the 20th and 21st centuries as technology developed and the government became more involved in the health of the British people
In 1900, most sick people were still cared for at home, generally by women as it was traditionally viewed as their role to look after members of the family