Frykman et al 1994

J Lab Clin Med 1994; 123.561-4

Frykman et al:
“The study demonstates that a low-dose iron supplement containing both heme iron and non-heme-iron (Hemofer) has fewer side effects when compared with an equipotent, traditional non-heme iron supplement.”

Hoppe M, et. al. 2012

“Heme iron-based dietary intervention for improvement of iron status in young women.”

“Non-heme Iron as Ferrous Sulfate Does Not Interact with Heme Iron Absorption in Humans.”

“Iron supplementation in pregnancy: Is less enough. A daily dose of iron, containing a heme component prevents depletion. An equivalent dose of pure inorganic iron seems less effective.”

Medical Necessity of Hemoglobin Iron PhD Medicine Michael Hoppe Signed Certificate (2015-02-10)

Heme iron. The natural way of iron supplementation.

Everything you need to know about heme iron. Ed 1.3

“A prospective study of intakes of zinc and heme iron and colorectal cancer risk in men and women.”

Intakes of dietary iron and heme-iron and risk of postmenopausal
breast cancer in the National Institutes of Health–AARP Diet and Health
Study

“The results of this large cohort study do not support an association between iron or heme-iron intakes and postmenopausal breast cancer.”

Duodenal Absorption and Tissue Utilization of Dietary Heme and Nonheme Iron Differ in Rats

“Differential tissue utilization of heme vs. non-heme iron was evident between erythroid and iron storage tissues, suggesting that Heme-Iron may be exported into the circulation in a form different from that of non-heme iron.”