You can see exactly what you are doing when injecting into the thigh

may cause iron-deficiency anemia Nausea and vomiting particularly with stricturing disease/obstruction Urgency and tenesmus with rectal/colonic involvement Weight loss and malnutrition due to malabsorption, food avoidance, elevated metabolic demand Fever with active inflammation, abscess, or fistula Perianal disease fissures, fistulae, skin tags, abscesses Extraintestinal Manifestations Arthropathy peripheral or axial (enteropathic arthritis, M07.6x) Dermatologic: Erythema nodosum (L52), pyoderma gangrenosum, psoriasis (L40.5) Ocular: Uveitis/iritis (H20.01), episcleritis, scleritis Hepatobiliary: Primary sclerosing cholangitis (K73.2), fatty liver, cholelithiasis Metabolic: Osteopenia/osteoporosis (from steroid use and malabsorption), nephrolithiasis Hematologic: Anemia (iron deficiency, B12/folate deficiency, anemia of chronic disease) When a patient with Crohns disease is admitted with significant weight loss, malnutrition, or protein-calorie deficiency , query the provider to specify the degree of malnutrition (mild, moderate, severe protein-calorie malnutrition)

If bloodwork shows you are deficient, correcting it can genuinely improve energy and wellbeing
GLP-1 Receptor Agonists Glucagon-like peptide-1 receptor agonists were developed to treat type 2 diabetes and turned out to produce substantial weight loss
Some researchers prefer this because the slightly lower concentration gives them more precision, especially if they are doing half-step escalations like 6mg or 10mg between the standard protocol doses
I'm now in my 50s and they are starting to get a bit irregular but in terms of pain - used to be bad when I was younger but started taking an iron supplement when I was in my 30s and that seemed to sort things out