Arsenic contamination of food and water is a problem in many parts of the world. Certain types of rice may contain particularly high levels (30Trusted Source).

Long-term exposure can lead to the development of cancer and heart disease. Research on lab animals shows that Moringa leaves combat the effects of arsenic toxicity. (31Trusted Source, 32Trusted Source).

Several studies in mice and rats have shown that the leaves and seeds of Moringa oleifera may protect against some of the effects of arsenic toxicity (33Trusted Source, 34Trusted Source, 35).

These results are promising, but it’s not yet known whether this also applies to humans.