Twins

Myths and legends have surrounded twins for centuries. Here, we explain how they’re formed, how alike they really are and what twins teach us about human health

Researchers have linked a newly discovered gene to persistent stuttering into adulthood – giving hope to those with severe speech disorders

Twins and other multiple birth babies face a higher risk of infant mortality, underscoring the need for specific healthcare guidelines

The number of families having multiple babies – like twins, triplets or more – has doubled in the last 40 years, but the support and advice provided to those families needs to catch up

Thirty-five years of twin research have led to incredible insights into how the environment and our genes impact our health