Obese girl tied up. The findings open new avenues for researching the brain. The high-fat, low-carb diet has swept Hollywood and Instagram. The Institute of Medicine IOM guidelines recommend that women normal weight, overweight, and obese prior to pregnancy gain 25—35 pounds, 15—25 pounds, and11—20 pounds, respectively [ 6 ]. Interventions aimed at preventing excessive GWG have had limited success, and none have been effective in women already overweight or obese prior to pregnancy [ 11 — 14 ]. BMC Public Health. Tell me about any specific changes you made to your diet Did your caloric intake increase or decrease? Search for: Obes Rev. Related coverage. The results of the study appeared in the May 21st issue of Health Psychology.