"The NHS has removed the term "dad" from its childbirth guide after receiving a complaint that the leaflet was excluding same-sex parents.
The Ready Steady Baby pamphlet, which offers advice on pregnancy and the first year of parenthood, has been given to mums and dads-to-be for the last 14 years.
However, the 220-page guide will no longer refer to fathers after a complaint that claimed it was "not inclusive of people in same-sex relationships".
Instead, the leaflet will use the non-gender specific term "partner" in its latest revision.
Norman Wells, of the Family Education Trust, said the NHS was wrong to change the language in the booklet. He said: "The NHS should not be squandering tax payers' money to advance the cause of a minority interest group.
"No matter how much effort is made to present positive images of families headed by same-sex couples, the fact remains it takes a man and a woman to create a child."