Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[CLKD]

Flossy Macflossy wrote: CLKD - no, I wasn't given any iron supplements, I was just told to drink less tea - apparently that affects iron levels.  That sounds like another thing to ask my doc about - plus repeat blood tests.  I've given up my beloved beer
which has tannins and grains in .......


which prompted : SundayGirl :  Depends on when you drink it CLKD. 

Tannins and oxalates in tea can inhibit iron absorption as it binds to the iron and stops you absorbing it, moreso if it's non-haem iron. It also stops you from absorbing iron supplements as effectively too.

Just leave a gap between eating or taking supplements and drinking tea. (And don't forget to take your iron supplements well away from any other supplements you take. That's a whole other thread though )

Interesting topic. 

It's snowing so DH has nowt else to do [well he hasn't seen the list that I've written for him  ]

He's been searching.  Of course, red wines have tannins ........... the body recycles naturally about 85% of iron by circulation.  Apparently this may affect vegans and vegetarians with a mainly plant-based diet, as those meat eaters are unlikely to be affected due to the haemoglobin's .

I will copy and paste his findings.

[CLKD]

The effect of tea on iron absorption.
 
P B Disler,
S R Lynch,
R W Charlton,
J D Torrance,
T H Bothwell,
R B Walker,
F Mayet
 
Abstract
The effect of tea on iron absorption was studied in human volunteers. Absorption from solutions of FeCl3 and FeSO4, bread, a meal of rice with potato and onion soup, and uncooked haemoglobin was inhibited whether ascorbic acid was present or not. No inhibition was noted if the haemoglobin was cooked. The effect on the absorption of non-haem iron was ascribed to the formation of insoluble iron tannate complexes. Drinking tannin-containing beverages such as tea with meals may contribute to the pathogenesis of iron deficiency if the diet consists largely of vegetable foodstuffs.

 
 
 
https://doi.org/10.1136/gut.16.3.193

 

Curr Dev Nutr

. 2017 Jan 19;1(2):1–12. doi: 10.3945/cdn.116.000042

The Impact of Tannin Consumption on Iron Bioavailability and Status: A Narrative Review
Nicole M Delimont 3, Mark D Haub 3, Brian L Lindshield 3


The source of 'uncooked haemaglobin' isn't stated in the article.  Sometimes 'this requires on-going Research' usually hints at Scientists looking for Grants.
 
 

[ElkWarning]

This is really interesting - from an anecdotal perspective...

I stopped drinking tea two or three years ago. I don't like milk and was cutting out processed sugar. Basically, this meant I wasn't hugely enjoying hot, brown water. I switched to herbal teas and/or sparkling water  Anyway, according to recent blood tests my iron levels are the best they've ever been. I wonder if the two are connected.

[CLKD]

Without a double blind study how likely would you find out?

After my 3 morning black teas with 2 sugars I drink fizzy bottled water .  My taste buds alter during the day, don't know if it's how the water is drawn when every1 turns on the taps? 

I don't like milk.