I'm a ~30 year old meat-eating male in a family with a history of anemia on my mother's side (including my sister). It was discovered sometime within the past

I'm a ~30 year old meat-eating male in a family with a history of anemia on my mother's side (including my sister). It was discovered sometime within the past few years during a routine blood test that I had low hemoglobin from a moderate-to-severe Iron/B12 deficiency (no full blown other condition, though) I was never recommended injections, however. Doctor told me to take an off-the-shelf supplement and to eat more red meat. (I rarely did) When I don't follow through with those items I do notice. Following his advice has greatly improved my overall feeling of well-being. I would otherwise feel tired, foggy-headed, weak, faint, anxious, nauseous at times—sometimes a mix of all of the above. Used to think my blood sugar was just low.