Researchers have conducted a review of studies on pregnancy in trans men, finding they may experience higher miscarriage rates. The review, published in a medical journal, analyzed 44 studies and found miscarriage rates of 31% to 40% among trans men, compared to 11% to 22% in the general population. Further research is needed to understand this issue, as the current studies did not include direct comparison groups.

This means it is unclear whether the increased miscarriage rates are related to transmasculine identities or other factors, such as testosterone use before pregnancy. More information on this topic is available from the source, including details of the research review and its findings.