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).

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）。

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They say that informal breast-milk sharing puts babies at risk of HIV, hepatitis B and other infectious diseases.

他们说随意的分享母乳，让宝宝们有了被艾滋病毒，B型肝炎和其他传染性疾病感染的危险。

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Milk contains essential nutrients like Calcium, Potassium, Protein, Vitamins a, B-12, d, Niacin, Phosphorus and Riboflavin.

牛奶含有的基本营养素有钙，钾，蛋白质，维生素a、B12、D，烟酸，磷，核黄素等。

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Historically, two grades of milk were established: Grade A and Grade B.

FORBES: Why Milk Isn't As "Natural" As You Think

Grade A is for use in fluid milk products as well as any other dairy products, whereas Grade B which meets slightly lower standards, can only be used for manufactured dairy products, like cheese.

FORBES: Why Milk Isn't As "Natural" As You Think

Vitamin B-12 deficiency can result from a diet lacking in vitamin B-12, which is found mainly in meat, eggs and milk.

CNN: Vitamin deficiency anemia