Digital platforms should be programmed to flag vitamin B12 deficiency (<200 pg/mL), iron deficiency anemia (ferritin < 30 ng/mL or hemoglobin < 11 g/dL), vitamin D3 deficiency (25OHD3 < 20 ng/mL), and undernutrition (albumin < 3.5 g/dL) [59]. Here, ALB is linked to Iron deficiency anemia.