reading about zinc I came across the following article. I mean it focuses on chronic kidney desease but I found this gem of info stating that zinc combined with iron is better than iron alone. Now I'm not iron deficient. But I thought this might be interesting for those who are. Beware too much zinc over long periods of time can be toxic. (A chronic toxicity vs acute or immediate toxicity).
"In many pregnant women and infants suffering from anemia, several reports indicate that zinc supplementation combined with iron therapy can increase hemoglobin levels and improve iron indexes more than iron alone [134,135,136,137,138,139,140,141]. In addition, zinc deficiency is known to be associated with various risk factors for cardiovascular disease"
"Dietary Zinc can affect plasma levels but the association is not suitable for making inferences on dietary intake, in particular since zinc levels do not always decrease following deprivation. The concentration of zinc in blood does not only depend on intake, but also on non-dietary factors, and it is subject to tight homeostatic control.
However, despite it's poor sensitivity and specificity, plasma zinc is still the most widely used biomarker of zinc status. Zinc in hair is associated with intake, and this might be an alternative biomarker, in particular for long-term exposure."
I take about 8-10mg supplemental zinc based on my tracked dietary intake and accounting for the dreaded antinutrients 😋. Up to 15mg long term supplemental zinc is likely safe and short term doses shouldn't exceed 40mg to be on the safe side. The possibility of negative effects on copper status may emerge if you exceed 40mg supplementation. If you go much higher than that again you can even impact magnesium status too, and that wouldn't be good at all.
I rate the chances of getting a zinc biomarker hair test on the NHS to be somewhere between nil and "you must be joking".
Interest to read about impact on copper status. I laughed at between nil and "you must be joking". Reminds me of nearly chuckling in the face of a doctor who thought copper deficiency was Wilson’s disease. It is an inherited disorder and copper toxicity occurs.
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