How much mercury is in dried seaweed?

The research found the average mercury content of food-grade seaweed was 0.01 mg/kg dry weight.

Why is there a lead warning on seaweed?

Seaweed (at least from some waters) is naturally high in cancer-causing chemicals like arsenic and cadmium and lead. So products sold somewhere like CA may be required to carry a warning.

How safe is eating seaweed?

Eating fresh seaweed is generally considered safe for most people. While the plant offers many health benefits, there are a few things to watch out for: Too much iodine. While iodine is a vital trace mineral for thyroid health, too much can have the opposite effect.

Can I get mercury poisoning from seaweed?

Seaweed can absorb and store minerals in concentrated amounts ( 8 ). This poses a health risk, as seaweed can also contain large amounts of toxic heavy metals such as cadmium, mercury and lead.

How much seaweed should I eat daily?

“It is difficult to determine how much seaweed a person should consume to benefit from its good qualities,” said Mouritsen. “Five to 10 grams of dried seaweed per day is my estimate.” Not that you should need to seek this out or sprinkle it on your breakfast cereal (although you can if you wish).

Is seaweed contaminated with mercury?

The intakes of total mercury, lead, and cadmium for Korean people from seaweed were estimated to be 0.11, 0.65, and 0.45 µg kg(-1) body weight week(-1), respectively.

Why does roasted seaweed have Prop 65 warning?

The majority of seaweed products on the market today likely contain traces of one or all three of these metals. These Notices alleged that seaweed and seafood products contain arsenic, cadmium and/or lead (and related compounds) and therefore require a Prop 65 warning.

Does seaweed have high mercury?

Depending on where they’re grown, some varieties of seaweed can contain high levels of mercury, cadmium, lead, and arsenic ( 41 ). The Food and Drug Administration (FDA) regulates the levels of these chemicals and heavy metals in fresh seaweed ( 42 ).