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DAIRY farmers in Canada are investigating complaints by consumers that their blocks of butter have become too hard to spread.
The saga began with a question posted on Twitter by Julie Van Rosendaal, a Canadian cookbook author, who asked her followers: "Have you noticed it's no longer soft at room temperature?"
Hundreds of people responded saying they shared the problem. Scientists warned it could become a public health issue, and have blamed an increase in the use of palm oil.
Dr Sylvain Charlebois, the senior director of the Agri-Food Analytics Lab at Dalhousie University, who looked into the claims, said: "Disturbing reports...