Will Too Much Manganese?

If you take too much manganese as supplements, you could have side effects. These can include loss of appetite, slowed growth, and reproductive issues. It may also cause anemia. This is because manganese competes with iron for absorption.

How much manganese per day is too much?

Side Effects and Dangers. It appears to be safe for adults to consume up to 11 mg of manganese per day ( 30 ). The safe amount for adolescents 19 or younger is 9 mg per day or less. A healthy person with functioning liver and kidneys should be able to excrete excess dietary manganese.

Is eating too much manganese bad for you?

Taking more than 11 mg per day by mouth is POSSIBLY UNSAFE for most adults. Manganese is LIKELY UNSAFE when inhaled by adults for long periods of time. Excess manganese in the body can cause serious side effects, including symptoms resembling Parkinson's disease, such as shaking (tremors).