根据最新的研究证实：如果你想让孩子长得身材高大，就需要考虑在和你所处地理环境较远的地方寻找伴侣。
波兰的科学家们最近发现如果孩子的父母都来自于同一个城市，他们的平均身高偏矮。而当父母所处地域差异很大时，子女们通常长得身材高大。
父母所处地域差异大时，子女们通常身材更加高大。（图）
这项研究的论文发表在最近的《American Journal of Physical Anthropology》杂志上。文章的第一作者，来自于波兰科学院人类学学院的Dariusz Danel博士认为这和遗传的多样性相关。
来自于不同地域的父母相比那些居住在同一个环境下的父母在遗传学上基因通常差异更大。
而父母在遗传基因上的差异性越大，他们的子女在成长时身体更能有效率的消耗能量，因此就能够长得更高。
Dariusz Danel说道“这个现象在儿童6到18岁的成长阶段过程中表现得比较明显。”
科学家们在波兰测量了2675个男孩、2603个女孩以及他们父母的身高并进行了比较。研究结果如他们预料的是：这些孩子的身高和他们父母的身高及财富存在一定联系，因为那些身材高大的孩子通常被哺育的更好。
但是更重要的是，按照上诉结论，有大约20%的男孩和14%的女孩在身高上出现异常，并且有确凿的证据显示这和父母所处地域上的差异相关。
这项研究指出这和每个人的遗传多样性相关，并且男孩似乎更容易受这方面的影响，因为他们比女孩在身高成长上更快，更持久。
Dariusz Danel博士认为在上个世纪，这个地域差异对身高的影响应该表现得比现在更为明显。这主要和当代饮食习惯相关，如今大部分的儿童每天摄入的营养已经远远超出成长所必须的量，这使得该因素对身高的影响变得越来越小。
Isolation by distance between spouses and its effect on children's growth in height
Heterosis is thought to be an important contributor to human growth and development. Marital distance (distance between parental birthplaces) is commonly considered as a factor favoring the occurrence of heterosis and can be used as a proximate measure of its level. The aim of this study is to assess the net effect of expected heterosis resulting from marital migration on the height of offspring, controlling for midparental height and socioeconomic status (SES). Height measurements on 2,675 boys and 2,603 girls ages 6 to 18 years from Ostrowiec Świętokrzyski, Poland were analyzed along with sociodemographic data from their parents. Midparental height was calculated as the average of the reported heights of the parents. Analyses revealed that marital distance, midparental height, and SES had a significant effect on height in boys and girls. The net effect of marital distance was much more marked in boys than girls, whereas other factors showed comparable effects. Marital distance appears to be an independent and important factor influencing the height of offspring. According to the “isolation by distance” hypothesis, greater distance between parental birthplaces may increase heterozygosity, potentially promoting heterosis. We propose that these conditions may result in reduced metabolic costs of growth among the heterozygous individuals.
