Trevor MacDonald from Canada took a break from testosterone therapy in order to give birth to his child, learnt that he could still nurse using an SNS device.

Explaining the process, he said: "An SNS is a bottle with a tube going into it.

"You put one end of the tube next to your nipples and then latch the baby onto your nipple and the tube at the same time."

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"This way, the baby gets both the milk that the parent can produce and supplement [milk] from the bottle at once."

But, like most new parents, Trevor said the process of breast-feeding was not easy for him and his partner.

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"We struggled through the exhaustion of sitting up through the exhaustion of sitting up through nursing sessions day and night," he said.

Luckily, the pair have now got to grips with feeding, so much so that they decided to have another baby just a few weeks ago.