Key points from article :
Study in China included almost half a million people.
Study used the data of the people who mentioned having insomnia at least 3 days a week in the past month.
Researchers recorded diagnoses of cardiovascular, which include heart attack and stroke.
People who had 1 of the 3 sleep problems had a 10% increased risk of cardiovascular disease.
Treating individual insomnia symptoms may have the potential to reduce subsequent CVD risks.
Study doesn't prove that insomnia directly increases your risk of cardiovascular disease.
Findings of the study may not apply to the UK population.
