The best way to predict heart attack risk and other obesity-related diseases is a measurement that divides the circumference of your waist by your hips.
If youâ€™re a woman, the waist-to-hip ratio should come out as no more than 0.8. Men have a little more wiggle room: a healthy waist-to-hip ratio for them is 0.95.
I don't have a tape measure so I can measure mine yet. I do know that before I started cycling, my waist was more than 100 cm, which just by itself is a fairly serious risk factor. At a guess now, I would say that it is maybe 94 cm based on my trouser size. Anyway, it's a big improvement. Still a way to go though (at a guess).