The Claim

After washing, soaking, and rinsed cooking, arsenic levels in cooked rice remain sufficiently elevated to maintain carcinogenic risk above acceptable thresholds, while non-carcinogenic risks for all other metals are below established safety limits.

Source: The reduction of toxic metals of various rice types by different preparation and cooking processes - Human health risk assessment in Tehran households, Iran.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
44score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Cooking rice by washing, soaking, and rinsing reduces toxic metals, but arsenic levels stay high enough to pose a cancer risk, while risks from other metals are within safe limits.

See the scientific wording

Despite significant reductions in toxic metals through washing, soaking, and rinsed cooking, arsenic levels in cooked rice remain high enough that the carcinogenic risk remains above acceptable thresholds, while non-carcinogenic risks for all metals fall below safety limits.

Why this might work

Rice grains naturally store arsenic in their starchy inner layers, and even after washing and boiling in excess water, the arsenic stays trapped inside the starch structure and does not wash out completely, so people who eat the cooked rice still get a high dose of arsenic that can damage DNA over time.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: The reduction of toxic metals of various rice types by different preparation and cooking processes - Human health risk assessment in Tehran households, Iran.

    Even after washing and cooking rice in lots of water, there’s still enough arsenic left to possibly cause cancer, but the other bad metals like lead and cadmium are low enough to be safe.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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