People who have difficulties falling or staying asleep may have a higher risk of developing dementia later in life, scientists have found. Scans of nearly 600 middle-aged people showed sleeping badly aged the brain by nearly three years and was associated with poorer brain health years later – despite adjustingContinue Reading

Kissing in humans evolved as a symbolic expression of love from grooming behaviours seen in ancestral great apes, a comprehensive new study says. The kiss has been a versatile way by which humans across civilisations and societies have shown affection, intimacy, or social bonding, most often in a way thatContinue Reading