The abdomen (at least 2 inches away from the navel) is a common site for subcutaneous NAD+ because it has a good layer of subcutaneous fat and tends to be less sensitive
10.1097/00129300-200206000-00001 [PubMed] 7.Parul Sahni (2021) The screening and treatment of vitamin B12 deficiency
Clinical Lymphoma, Myeloma & Leukemia 2012
NHS approach to B12 deficiency: NICE Clinical Knowledge Summaries recommend investigating B12 deficiency in patients presenting with macrocytic anaemia, unexplained neurological symptoms, or risk factors including pernicious anaemia, gastrectomy, malabsorption disorders, metformin use, proton pump inhibitors, or nitrous oxide exposure
In fact, CoolSculpting is recommended for stubborn fat pockets that arent readily eliminated by dieting or exercising