Brain Embraces Being Middle-Aged A new study was done to find out what the top signs that you are middle-aged. They wasted their money. All they would have to do is ask me. Seriously, I check all the boxes when it comes to this particular survey. I guess that means I'm middle-aged. Beats being called 'old' I suppose. The U.S. Sun reports that the survey, commissioned by Healthspan, found that the average person doesn't feel middle-aged until they turn 47. That is the age I'll turn later this year. But when you look at the different signs that you are middle-aged, I can confirm that many of those begin LONG before you are in your mid to late forties!