New research reveals why some people use food to soothe their emotions.
A twins study shows that children born via IVF have similar epigenetic changes compared with those born naturally.
Teenagers are heavily influenced by what their friends eat, to the extent that they forget about their parents' cooking.
Smoking causes 96,000 premature deaths a year in the UK. The fact that it protects against Parkinson's disease is not a reason to take up the habit.