research Environmental Factors and Puberty Timing: Expert Panel Research Needs 284 citations, February 2008 in “Pediatrics” Chemicals and body size might change when puberty starts and progresses, but more research is needed to confirm this.
research What Should It Take to Describe a Substance or Product as 'Sperm-Safe'? 58 citations, March 2013 in “Human Reproduction Update” Products should be called 'sperm-safe' only after thorough, well-designed tests.