[Advances in research based on twins reared apart].

The design of twins reared apart, very rare genetic epidemiological resources has been hailed as fascinating experiment of nature. However, not so many studies have been based on it due to the difficulty in recruiting the participants. It also makes the only existing research on twins raised apart particularly valuable. How to utilize these resources fully will be the focus of this research area. This review will overview its design background, basic hypothesis, and current status of research and give advice for the research in this field in China.