insomnia

Morning or night person? It depends on many more genes than we thought

 Morning or night person? It depends on many more genes than we thought

Do you prefer to rise early with the lark or stay up late with the owl? Your preference turns out to be partly decided by your genes. Our genetic study of nearly 700,000 people has revealed new insights about the genetics of chronotype – our preference to rise early or sleep late – and how it influences our mental and physical health.