Insights & Discussion
Maintenance of sufficient vitamin D status may be important in preventing anemia, particularly in diseases characterized by inflammation.
Vitamin D has previously been found to be associated with anemia in various healthy and diseased populations. Recent studies indicate that the association may differ between race and ethnic groups and is likely specific to anemia of inflammation. The mechanism underlying this association involves the reduction of proinflammatory cytokines by vitamin D and the direct suppression of hepcidin mRNA transcription. There is also evidence that vitamin D may be protective against anemia by supporting erythropoiesis. Other calciotropic hormones including fibroblast growth factor 23, and parathyroid hormone have also been found to be associated with iron homeostasis and erythropoiesis.
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Recent revelations of L-DOPA, dopamine, 5-hydroxytryptophan, tryptamine, serotonin, N-acetylserotonin, melatonin, 2-hydroxymelatonin, AFMK, AMK, and vitamin D3 derivatives in honey expand its health benefits.
2022 Melatonin Research Serotonin, melatonin and their precursors and metabolites and vitamin D3 derivatives in honey Kim TK, Fabisiak A, Brzeminski P, Reiter RJ, Slominski AT
Review Article Honey Melatonin Serotonin
The identification of L-DOPA, dopamine, 5-hydroxytryptophan, tryptamine, serotonin, N-acetylserotonin, melatonin, 2-hydroxymelatonin, AFMK, AMK, and vitamin D3 derivatives in honey aligns with their presence in insects and plants. Serotonin and melatonin, integral to tryptophan metabolism, serve diverse roles as hormones, neurotransmitters, and antioxidants. Dopamine and tryptamine, essential neurotransmitters, have broad significance across species. The detection of these molecules in honey, a widely consumed health-promoting substance, enhances its beneficial effects on human health.
The findings highlight the multifaceted composition of honey, encompassing compounds with recognized roles in neurotransmission, antioxidant activity, and hormonal regulation. The presence of these molecules not only broadens honey's spectrum of health benefits for humans but also implies their significance in the intricate physiology of social insects, influencing bee development and colony functions. The co-detection of these compounds with vitamin D3 derivatives further underscores the interconnectedness of honey with insect and plant biology, shedding light on potential synergies that contribute to the diverse positive effects of honey on human health.
Vitamin D and Omega 3 fatty acids supplementation appears to reduce the risk of autoimmune diseases.
2022 BMJ Open Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial Hahn J, Cook NR, Alexander EK, Friedman S, Walter J, Bubes V, et al.
Cohort Study Autoimmune Disease Omega-3 Fatty Acids Vitamin D
In this nationwide, double-blind, randomized, controlled trial, 25,871 male and female participants over the ages of 50 and 55 respectively, were given either Vitamin D (2000 IU/day), Omega 3 fatty acids (1000 mg/day), both, or a placebo. Over the median follow-up period of 5.3 years, participants self-reported cases of autoimmune diseases, and these were verified by thorough medical record review.
In the discussion of results, it was found that Vitamin D supplementation, regardless of the presence of Omega 3, seemed to reduce the occurrence of autoimmune diseases by 22%. Meanwhile, Omega 3 supplementation alone didn't show a statistically significant reduction in autoimmune diseases, but it did show a larger effect in reducing autoimmune diseases than the reference arm (that received placebo for both Vitamin D and Omega 3).
Simultaneous administration of vitamin D and Epigallocatechin gallate significantly reduces the size of uterine fibroids in premenopausal women, and decreases menstrual flow duration.
2021 Gynecological Endocrinology Vitamin D and green tea extracts for the treatment of uterine fibroids in late reproductive life: a pilot, prospective, daily-diary based study Grandi G, Del Savio MC, Melotti C, Feliciello L, Facchinetti F
Clinical Study Uterine Fibroids Vitamin D
In this study, 16 premenopausal women with uterine fibroids of varying sizes aged over 40 years old were given doses of Epigallocatechin gallate, Vitamin B6 and Vitamin D daily for 90 days. The women were selected based on specific criteria including their fibroid size and lack of other causes for abnormal uterine bleeding. Each woman kept a detailed daily diary recording details about their bleeding and pelvic pain.
The analysis of the data revealed that there was a noteworthy decrease in both the average size of fibroids for each woman and the size of individual fibroids. This effect was especially pronounced in women with predominantly intramural fibroids in comparison to subserosal fibroids. While menstrual cycle duration and intensity did not change, the length of menstrual flow was decreased. Uterine and ovarian volume as well as endometrial thickness did not exhibit any significant changes. The treatment was generally highly satisfactory to the participants, with no adverse effects reported.
The body begins to upregulate iron absorption at a ferritin concentration of less than 50 µg/L, indicating an incipient iron deficiency in young women.
2021 EClinicalMedicine Threshold ferritin and hepcidin concentrations indicating early iron deficiency in young women based on upregulation of iron absorption Galetti V, Stoffel NU, Sieber C, Zeder C, Moretti D, Zimmermann MB
Cohort Study Ferritin Hepcidin Iron Absorption
In the methodology, this study utilizes a pooled analysis of stable iron isotope studies conducted between 2006 and 2019 on healthy women aged 18 to 50. These studies quantified iron absorption from meals providing physiological quantities of iron. A mathematical model known as generalized additive modeling was employed to ascertain the relationships between iron absorption, ferritin, and a molecule called hepcidin. By estimating the first derivatives of the trend created by the model, inflection points (or thresholds) in these relationships were established.
The results revealed that hepcidin increased in a linear fashion parallel to ferritin. Iron absorption increased when hepcidin reached a threshold value and when a threshold ferritin value was detected, beyond which iron absorption remained stable. An auxiliary validation within the results found that a hepcidin of approximately 3 nmol/l corresponded to a ferritin level of approximately 51 µg/l. These findings collectively suggest that if the body's ferritin concentration falls below 50 µg/L—corresponding to a hepcidin level of less than 3 nmol/l—the body will respond by absorbing more iron from the diet, signaling an emerging iron deficiency.
We determined the concentration of 20(OH)D3 in honey to be 0.26 µg/g, corresponding to approximately 10 IU/g.
2020 Molecules Detection of 7-Dehydrocholesterol and Vitamin D3 Derivatives in Honey Kim TK, Atigadda V, Brzeminski P, Fabisiak A, Tang EKY, Tuckey RC, et al.
Experimental Study 20(OH)D3 Honey Vitamin D
Using an LC-MS assay utilizing 20(OH)D3-d3 as internal standard, we determined the concentration of 20(OH)D3 in honey to be 0.26 µg/g, corresponding to approximately 10 IU/g based on the conversion for vitamin D3 (400 IU = 10 µg). While this may seem relatively low, it must be noted that 20(OH)D3, unlike vitamin D3, is an activated form of the vitamin. It is non-calcemic but exerts many of the other activities of 1,25(OH)2D3 seen in cell culture and in animal studies, with comparable potency. Thus, while the amount of 20(OH)D3 in honey is relatively low, it could potentially be of physiological significance.
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