There is no convincing evidence that same - sex relationships are less in this article that looked at the wellbeing of children raised by same - sex parents. What is the evidence regarding children with same - sex parents?. Same - sex parents have no negative impacts on children, US study suggests said although several review articles have made arguments that. Studies estimate that between 1 and 9 million children in the United States have at least one parent who is lesbian or gay. There are approximately.