The Ashley treatment: ‘Her life is as good as we can possibly make it’

In an exclusive email exchange, Ashley's father talks to Ed Pilkington about his daughter's condition, her growth attenuation treatment – and the criticism his family has faced

Dr Dillner’s health dilemmas: is shaking hands a health hazard?

Luisa Dillner wonders whether it really is a dangerous habit

Gene therapy cures life-threatening lung infection in teenage boy

Doctors used the new technique to temporarily boost the immune system of the boy, who has an inherited condition

Why we sued Simon Singh: the British Chiropractic Association speaks

Edzard Ernst: The BCA gives a fascinating account of why it sued the writer for libel over an article in the Guardian, and the aftermath of its defeat

Older mothers may be more prone to depression than younger women

Preliminary study suggests risk of depression is five times as high among women who have children later in life

Death by denial: The campaigners who continue to deny HIV causes Aids

Brian Deer: As each of their followers dies, those who campaign against HIV treatments simply move on to the next level of denial

Vaccine developed to protect against norovirus or ‘winter vomiting bug’

A vaccine for norovirus, which is highly infectious and is difficult to kill by cleaning, could be availabe within five years

HIV warning to women using injectable contraception

World Health Organisation advises use of condoms for protection against infection

Chemo in pregnancy does not necessarily harm baby, says study

Children born to women undergoing cancer drug treatment show normal results in physical and mental development tests

Women with diabetes warned to take precautions when having a baby

Diabetic mothers-to-be have high risk of giving birth to children with congenital abnormality, study says