Hiatus hernia causing weight loss only in waist and torso. Eating more doesn't help, and I take probiotics regularly. Solutions?

Unrelated issues. There is no substitution for a healthy, well-balanced diet, regardless if the goal is weight gain or loss.Weight gain is achieved if the individual takes in more calories than he/she burns; weight loss happens when calories burned exceed calorie intake. Exercise to improve toning, reduce cravings ; stress, assist in body self-image. Unfortunately, you can't pick where (or not) you gain the weight.