 [ Symptoms ] i am 55 at 115 120 lbs and 19 yrs old i noticed a horizontal line across the bottom of my stomach what is it  i would like to know what causes this line and if there is anyway to get rid of it it seems to be permanent i do not think it is a stretch mark because i have never been pregnant and i have always been on the skinny side i have never lost or gained large amounts of weight at once also i am not currently pregnant [ Disease ] he is called nutrution doctor you should focus on carbohydrates in diet you can use triactin or mosigor twice daily every 12 hours growth formula 2 spoons twice daily on a cup of milk you will gain 1 kilogram per daynotice you should do thyroid cbc stool tests to role out any pathological reason for weightloss