Luke O’Neill: People who hassle you are not just an annoyance — they will make you age faster

All of us have a chronological age — the time that has passed since we were born. But it turns out our bodies age at different rates. Two people might have a chronological age of 50, but one might have the heart of a 40-year-old, while the other’s heart is more like a 70-year-old’s. We all know people in their 60s who are as sprightly as a 30-year-old when it comes to sport. This is because biological ageing happens at a different pace in each of us.