Celeste Costanzo
Accredited Practising Dietitian, Fertility Theory
Australia
Celeste is an Accredited Practising Dietitian and the founder of Fertility Theory, a virtual nutrition practice dedicated to science-backed, food-first support for reproductive health. With a background in Food & Nutrition Science and a Master of Dietetics from Deakin University, Celeste helps individuals and couples take the guesswork out of fertility nutrition—supporting those with conditions like PCOS, endometriosis, and hormone imbalances to conceive using practical, personalised nutrition coaching.
Known for her warm, relatable approach, Celeste is passionate about making nutrition the most powerful (and underused!) tool in boosting fertility and improving pregnancy outcomes.