Wed Jan 22 09:25:13 UTC 2025: ## Men’s Height and Weight Outpacing Women’s Over the Past Century: Study
**London, UK** – A new study published in *Biology Letters* reveals a significant disparity in the rate of height and weight increase between men and women over the past century. Researchers from the University of Roehampton analyzed data from multiple countries and found that men have grown taller and heavier at twice the rate of women since 1900.
The study, led by Professor Lewis Halsey, examined the relationship between the Human Development Index (HDI) – a measure of life expectancy, education, and per capita income – and changes in height and weight. For every 0.2-point increase in HDI, men gained an average of 4cm in height and 6.5kg in weight, compared to women’s increase of 1.7cm and 2.7kg respectively.
This means that improvements in living conditions have a disproportionately larger effect on men’s physical stature. While average female height increased by 1.9% (from 159cm to 162cm) during the first half of the 20th century, male height saw a 4% increase (from 170cm to 177cm). Professor Halsey noted that the proportion of women taller than the average man has decreased significantly over this period.
The researchers suggest that this disparity is linked to the energetic demands of reproduction in women, making them more ecologically constrained. Professor Michael Wilson of the University of Minnesota described the faster growth in men as “striking,” aligning with the theory that males’ investment in body size is more sensitive to nutritional conditions. Professor Halsey explains that access to energy-dense foods leads to greater increases in men’s size compared to women’s. He also points out that men’s height is perceived as attractive by women, as it signals health and robust development.
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