The Claim

Increasing rice soaking time from 1 to 12 hours is associated with progressively greater reductions in arsenic (up to 37.1%), lead (up to 42.6%), and cadmium (up to 16.6%) content in rice grains.

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.

Correlation
1 study reviewed
In plain English

Soaking rice for longer periods between 1 and 12 hours reduces the levels of arsenic, lead, and cadmium in the rice, with longer soaking times removing more of these metals.

See the scientific wording

Increasing rice soaking time from 1 to 12 hours is associated with progressively greater reductions in arsenic (up to 37.1%), lead (up to 42.6%), and cadmium (up to 16.6%), suggesting that longer soaking durations enhance the leaching of toxic metals from rice grains.

Why this might work

When rice is soaked in water, the toxic metals inside the grain slowly dissolve into the water and move out through tiny pores in the grain's outer layers, with more time allowing more metal to leave.

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.

    Soaking rice in water for longer makes it safer by washing out more harmful metals like arsenic and lead—12 hours removes more than just 1 hour.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.