"In Utero Influence: How Male Fetal Hormones Impact Female Siblings"

The intrauterine position phenomenon, where sex hormones from one fetus can affect the development of another in the womb, has been observed in various mammals, including humans. This phenomenon has implications for understanding the effects of hormone-like chemicals such as BPA, sparking debates about their safety. Scientists are still researching whether these hormonal changes can impact humans, with studies suggesting potential differences in behavior, physiology, and development, but the complexities of studying a species in the real world present challenges.