We don't appreciate it as much but the poor diet and much more stressful city life that our generation is leading is VERY different from what our parents saw.
We've seen people in our parents generation get BP, Diabetes, Sugar, other stuff at 45/50 or afterwards, but this trend will change for us. We're more likely to have ailments, as a function of the change.
It's hard to really comprehend or explain. You're probably happy, eating fried food, chips, drinking, smoking and maybe not even regularly. But believe me, it can add up.
Gift yourself a full body checkup please 🙏