Spinach¹ may cause Alzheimer's disease in at-risk people, research suggests. 

 

研究表明，菠菜也许会使高危人群患上阿兹海默症（老年痴呆症）。

 

The salad leaf's iron-rich content may damage the brain similar to how the compound causes metal to rust², according to the researchers. 

 

People with high levels of iron alongside the protein amyloid, which has previously³ been associated with Alzheimer's, are more likely to experience rapid cognitive⁴ decline, a study found. 

 

Those with high amyloid but low iron levels are less at-risk of the disease, the research adds. 

 

Removing such 'rust' from the brain could prevent or delay the degenerative condition, the researchers add.

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