I'd say like anything health related you want to see changes over time. If something suddenly changes for the worse you know something new is going on. That's

I'd say like anything health related you want to see changes over time. If something suddenly changes for the worse you know something new is going on. That's why I like have access to consistent health care in my country. Something like an overall rise in blood pressure isn't necessarily something a person will notice. High blood pressure is described as the "silent killer".