A deficiency can manifest as dryness, acne, or even hyperpigmentation
Other causes are conditions affecting the stomach or small intestine, such as Crohns disease, operations such as gastrectomies (which involve removal of part of the stomach), and certain medications
If you are losing weight rapidly (more than 2 pounds per week consistently), ask your prescriber about a DEXA scan to monitor bone density
Parents should monitor children for side effects, including nervousness, tremor, and increased heart rate
During postprandial periods there is an increase in free circulating IGF-1 via insulin-induced suppression of IGFBP-1 secretion [168170], which sequesters free IGF-1 making it unavailable