2

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Manganese Bioavailability From Foods

Answered on November 22, 2014
Created November 23, 2011 at 6:05 PM

I often log my food into Fitday and have noticed that one thing that is pretty constant is that my dietary manganese is 700%plus percentage of the RDA. I don't know much about manganese other than it's toxic when inhaled. I looked at my multi and it contains 5 mg which is over 200% of the RDA for the average adult and I'm much smaller than the average adult. It seems that calcium can interfere with its absorption but I don't eat any dairy or supplement with calcium. Anybody know about the bioavailability of dietary manganese?

B8592e62f9804ddabae73c1103d6bcb9

(1956)

on June 26, 2012
at 12:58 PM

Manganese is important, but too much is dangerous. Too much and your brain will rot: http://www.ourcivilisation.com/madcow/index.htm

Fd70d71f4f8195c3a098eda4fc817d4f

(8014)

on June 22, 2012
at 04:07 PM

Manganese is an important mineral, but like anything, overdose/toxicity is possible. Sean Croxton (Underground Wellness podcast) did an interview not long ago with a nutritionist/traditional ND who does a ton of autism treatment. She had some interesting things to say about manganese toxicity & autism in kids. (There was more to it, but she did mention the zinc imbalance, if I recall correctly.)

7f8bc7ce5c34aae50408d31812c839b0

(2698)

on June 22, 2012
at 02:19 PM

Thats a lot of Manganese for a multi-vitamin. Are you sure is 5mg and not 5mcg? The one thing I'm always short of at the end of the day is manganese.

1dcfcebc5f36408d121f124a78292d42

(1295)

on April 26, 2012
at 07:47 PM

Someone read the MDA post today...

2870a69b9c0c0a19a919e54cb3a62137

(1520)

on April 12, 2012
at 07:45 PM

Any? No. Some? Yes.

77877f762c40637911396daa19b53094

(78467)

on April 12, 2012
at 07:26 PM

Doubtful. Manganese is plentiful in any non-RO filtered water.

1d0497f8781845ab371b479455bfee8e

(11157)

on November 23, 2011
at 06:42 PM

That's why I don't bother with multis...often I'm only a little short on calcium or magnesium at the end of the day, I can get just about everything else from diet.

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5 Answers

2
32f5749fa6cf7adbeb0b0b031ba82b46

(41747)

on November 23, 2011
at 06:29 PM

I'd say cut the multivitamin if you're getting such a high amount daily. No need to supplement things you are getting adequate amounts of. As you point out, calcium interferes with manganese absorption. It works in the other direction as well, excess manganese can interfere with other micronutrient absorption. Probably not calcium though (since daily calcium intake is 2 orders of magnitude greater than manganese intake), but other transition metals (e.g. iron) whose intake is on the same order as manganese could be affected greatly by excess manganese.

1d0497f8781845ab371b479455bfee8e

(11157)

on November 23, 2011
at 06:42 PM

That's why I don't bother with multis...often I'm only a little short on calcium or magnesium at the end of the day, I can get just about everything else from diet.

1
B8592e62f9804ddabae73c1103d6bcb9

(1956)

on May 10, 2012
at 10:22 PM

Cut the manganese back, you're getting way too much, it's toxic and will cause increased excretion of copper and zinc.

Fd70d71f4f8195c3a098eda4fc817d4f

(8014)

on June 22, 2012
at 04:07 PM

Manganese is an important mineral, but like anything, overdose/toxicity is possible. Sean Croxton (Underground Wellness podcast) did an interview not long ago with a nutritionist/traditional ND who does a ton of autism treatment. She had some interesting things to say about manganese toxicity & autism in kids. (There was more to it, but she did mention the zinc imbalance, if I recall correctly.)

B8592e62f9804ddabae73c1103d6bcb9

(1956)

on June 26, 2012
at 12:58 PM

Manganese is important, but too much is dangerous. Too much and your brain will rot: http://www.ourcivilisation.com/madcow/index.htm

1
3eca93d2e56dfcd768197dc5a50944f2

(11697)

on March 15, 2012
at 05:35 PM

I only get about 55% RDA manganese on the Paleo-ketogenic diet. I consider you lucky. :)

2870a69b9c0c0a19a919e54cb3a62137

(1520)

on April 12, 2012
at 07:45 PM

Any? No. Some? Yes.

77877f762c40637911396daa19b53094

(78467)

on April 12, 2012
at 07:26 PM

Doubtful. Manganese is plentiful in any non-RO filtered water.

1
559a1bf85bfe38a0fbbf56377c7278b4

on November 23, 2011
at 11:37 PM

I understand manganese is essential for good mitochondrial health and that a lot of people have iron overload, which manganese is thought to be good for. But this might of course not be true for you - the best thing is maybe to test what, if any minerals you need or have too much of already, and only supplement when you are fairly sure there is a need.

0
3ffbb9e87106be1349003654562f4ac7

on November 22, 2014
at 01:31 PM

but how do you get that much manganese?from what foods?

if thats from nuts its not much bioavailable

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