Key points from article :
NHS health check is free to everyone over 40 in England every 5 years.
The check-up takes 20 minutes and is carried out by a GP or nurse.
It involves a blood pressure test, lifestyle questionnaire, plus weight and height measurements.
Assesses risk of getting heart disease, stroke, kidney disease and type 2 diabetes.
Identifying an irregular heartbeat or high blood pressure would help to prevent blood clots.