This research investigates how bisphenol A (BPA), a common plastic chemical, may contribute to obesity. By disrupting hormonal systems during brain development, BPA alters appetite regulation and metabolic set points. Animal studies show increased obesity and diabetes risk, suggesting environmental chemicals may play a significant role in the obesity epidemic.

This research examines whether emotional sensitivity in women varies across the menstrual cycle by studying the interaction of sleep, hormones, and time. By tracking emotional memory at multiple cycle stages, the work aims to replace stereotypes with evidence and address long-standing gaps in women’s health and cognitive research.

Feathers and blood preserve detailed biological records of Tītī stress, diet, and environment across both New Zealand and the North Pacific. By analysing hormones and stable isotopes in modern and historical samples, this research reveals how climate change affects Tītī populations and identifies which groups are most vulnerable, guiding future conservation efforts.