Asked by: Mark Buckmaster, via email
A few days after eating pine nuts, some people get a bitter, metallic taste in their mouth, which can last for weeks.
Research has linked the taste to a species of pine nut from China (Pinus armandii), but scientists are still trying to figure out what causes the strange taste and why only some people are affected. The good news is that while the symptoms are unpleasant, there are no long-term negative health consequences.
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