“…There is an increasing recognition that vitamin D plays a crucial role in female reproduction (Xu et al., 2021) as well as in spermatogenesis (Zanatta et al., 2017). Low serum concentrations of 25‐OH‐D in humans have been associated with an increased risk of mortality and a variety of disorders including musculoskeletal diseases, diabetes mellitus, cardiovascular diseases, autoimmune diseases, cancer, gestational diabetes, and fertility issues (Dusso et al., 2005; Haidari et al., 2016; Holick, 2017; Pilz et al., 2018; Poel et al., 2012; Zhang & Naughton, 2010). Metabolic bone disease or rickets due to vitamin D deficiency has been documented in chimpanzees (Pan troglodytes) , and a wide range of non‐human primates under human care (Junge et al., 2000; Knapka, 2003; Power et al., 1995).…”