Swedes can change their legal gender from the age of 16, after the Swedish parliament passed a law lowering the age. The law passed with 234 votes in favour and 94 against in Sweden’s parliament. Sweden was the first country to make gender transition legal – in 1972. But the new law has sparked a debate. For some, lowering the age from 18 to 16 will make an “important difference” but critics say more research is needed.