Fit Trivia: Can You Decrease Fat Cells? Fit Trivia: Can You Decrease Fat Cells As You Age? Answer: No. At birth, your number of fat cells is determined. As you gain or lose weight, your fat cells will grow or shrink, but you cannot add or remove fat cells. Share this Related Posts Fat Burning Walking Preview 14 Days Of Fat Burning Challenge14 Days Of Fat Burning Challenge If you're serious about blasting fat, my FREE 14-Days Of Fat-Burning Challenge was made for you! Every day for 2… Cardio Fat BurnerJoin Kathy in a energetic workout. Get off the couch and start moving towards a healthier lifestyle!