in the Dinaric Alps is , an average difference of . Similarly, the shortest and tallest of individuals, Chandra Bahadur Dangi and Robert Wadlow, have ranged from to , respectively.The age range where most females stop growing is 15–⁠18 years and the age range where most males stop growing is 18–⁠21 years. Weight Human weight varies extensively both individually and across populations, with the most extreme documented examples of adults being Lucia Zarate who weighed , and Jon Brower Minnoch who weighed , and with population extremes ranging from in Bangladesh to in Micronesia. Organs Adult brain size varies from to in females and to in males, with the average being and , respectively. The right cerebral hemisphere is typically larger than the left, whereas the cerebellar hemispheres are typically of more similar size. Size of the human stomach varies significantly in adults, with one study showing volumes ranging from to and weights ranging from to . Male and female genitalia exhibit considerable individual variation, with penis size differing substantially and vaginal size differing significantly in healthy adults. Aesthetic Human beauty and physical attractiveness have been preoccupations throughout history which often intersect with anthropometric standards. Cosmetology, facial symmetry, and waist–hip ratio are three such examples where measurements are commonly thought to be fundamental. Evolutionary science Anthropometric studies today are conducted to investigate the evolutionary significance of differences in body proportion between populations whose ancestors lived in different environments. Human populations exhibit climatic variation patterns similar to those of other large-bodied mammals, following Bergmann's rule, which states that individuals in cold climates will tend to be larger than ones in warm climates, and Allen's rule, which states that individuals in cold climates will tend to have shorter, stubbier limbs than those in warm climates. On a microevolutionary level, anthropologists use anthropometric variation to reconstruct small-scale population history. For instance, John Relethford's studies of early 20th-century anthropometric data from Ireland show that the geographical patterning of body proportions still exhibits traces of the invasions by the English and Norse centuries ago. Similarly, anthropometric indices, namely comparison of the human stature was used to illustrate anthropometric trends. This study was conducted by Jörg Baten and Sandew Hira and was based on the anthropological founds that human height is predetermined by the quality of the nutrition, which used to be higher in the more developed countries. The research was based on the datasets for