The prevalence of obese older individuals with multi morbidity has increased in developing countries. The indication of bariatric surgery in this group, such as Roux-en-Y Gastric Bypass Surgery (RYGB) and vertical gastrectomy (VG), is the focus of intense debate and controversy, mainly due to the nutritional and microbiota alterations it provokes. Within this context, this mini review aims to discuss the indication of bariatric surgery in the older individuals and its impact on intestinal microbiota.