作为一种多发于中老年的疾病，男性发病率高于女性，比例为3：2。

As a disease whose prevalence is related with advancing age, it affects more men than women with a ratio of 3:2.

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1型糖尿病发病率低的人所食用的牛奶含酪蛋白（是A2形式的β酪蛋白，而含A1和B变种形式的β酪蛋白比例要低得多）。

The cow-milk found in populations with a low incidence of type 1 diabetes has a much lower fraction of A1 and B betacaseins (instead they have the A2 variant).

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20世纪70年代以来儿童肥胖症的发病率增加，而且在同一时期，生活在郊区的儿童比例也增加了。

Obesity rates among children have been increasing since the 1970's and, during that same time period, the proportion of children living in suburbs has increased.

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