Associate Professor Georgia Guldan, a nutrition science specialist at the Chinese University of Hong Kong, says this is due, in part, to the high salt content of Chinese diets, but may also be related to low calcium intake.

• 香港中文大学的营养学专家乔治亚·古尔丹副教授说，其原因部分应归咎于中国人饮食中高含量的盐份，但可能也和钙的低摄入量有关。