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ASK A VEGAN

Why don't vegans drink milk?

Dairy cows are repeatedly impregnated and separated from their calves, and most humans lose the ability to digest lactose after infancy.

FOOD

Short answer

Dairy cows are repeatedly impregnated and separated from their calves, and most humans lose the ability to digest lactose after infancy.

FOOD

The detail

A dairy cow only produces milk after giving birth. To keep milk flowing, cows are artificially inseminated roughly every year and their calves are removed within 24 hours — male calves typically go to veal, females replace their mothers in the herd. Cows are slaughtered at 4–6 years of age although their natural lifespan is ~20.

About 68% of the world's adults are lactose-intolerant. Fortified soy, oat, pea and almond milks match or exceed dairy's calcium and protein without the ethical footprint.

A practical first step is transitioning to fortified soy or pea milk, which provide protein levels comparable to cow's milk. A 2018 study published in Science found that the environmental footprint of dairy is roughly three times higher than plant-based alternatives in terms of greenhouse gas emissions. You can still enjoy creamy textures by using soaked cashews or coconut cream in recipes that traditionally call for heavy dairy.

Source: NIH 2010; USDA ERS 2023

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