Are protein requirements for female athletes the same than those of male athletes? Although it makes sense to think that body composition, energy metabolism and sex hormones may play a role in nutrient requirements, there are no fast and hard rules, but sensible guidelines as detailed below. Protein requirements for female athletes In theory, female athletes should have slightly lower protein requirements than their male counterparts because oestrogen causes exercising female bodies to increase fatty acid oxidation and decrease amino acid (and carbohydrate) oxidation (1, 2). Moreover, protein catabolism is higher in the luteal phase when oestrogen and progesterone are high (1). On the other hand, some studies seem to…