In 2016, a study looked into whether dietary dairy would increase the circulating levels of oestrogen in mice – the researchers took milk from pregnant cows that was claimed to have an increased level of oestrogen, and measured the concentration.

The results showed  that the only time levels of hormone changed in these mice was when they were given [a] massive overdose, containing 1000x more oestrogen than exists in cow’s milk – even pregnant cow’s milk.

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All of this makes perfect biological sense – oestrogens are steroid hormones which are metabolised by the liver. The liver detoxifies our body…. You would have to completely swamp the system before you’d start to see an appreciable difference in the body. Eating some cheese, or drinking some milk just isn’t going to do that.

There are some good reasons why you might not consume milk (including, but not limited to environmental and ethical reasons), and even some good reasons why some people might not consume it for their health.

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