Episode 38 with Dr. Emily Ricker and Dr. Kristen Koltun: Energy Intake for Menstrual Cycle and Bone Health

In today’s episode, we speak with Dr. Emily Ricker and Dr. Kristin Koltun about the importance of a healthy caloric intake for menstrual cycle health and bone health.

Dr. Emily Ricker is a scientist in the Injury Prevention Research Laboratory in the Consortium for Health and Military Performance (CHAMP) at the Uniformed Services University of the Health Sciences (USUHS). Les Mills group exercise instructor certified in BODYATTACK, BODYPUMP, and RPM.

Dr. Kristen Koltun is a postdoctoral research associate in the Neuromuscular Research Laboratory and Warrior Human Performance Center at the University of Pittsburgh whose research interests include the effects of energy deficiency on metabolism and reproductive function, and bone adaptation to arduous physical training in exercising and military populations.

Please note that this podcast is created strictly for educational purposes and should never be used for medical diagnosis and treatment.

See you in the next episode!


  • Dr. Emily Ricker
  • Dr. Kristen Koltun
  • Research 
    • De Souza MJ, Mallinson RJ, Strock NCA, Koltun KJ, Olmsted MP, Ricker EA, Scheid JL, Allaway HC, Mallinson DJ, Kuruppumullage Don P, Williams NI. Randomised controlled trial of the effects of increased energy intake on menstrual recovery in exercising women with menstrual disturbances: the ‘REFUEL’ study. Hum Reprod. 2021 Jul 19;36(8):2285-2297. doi: 10.1093/humrep/deab149. PMID: 34164675; PMCID: PMC8487661.
    • De Souza MJ, Ricker EA, Mallinson RJ, Allaway HCM, Koltun KJ, Strock NCA, Gibbs JC, Kuruppumullage Don P, Williams NI. Bone mineral density in response to increased energy intake in exercising women with oligomenorrhea/amenorrhea: the REFUEL randomized controlled trial. Am J Clin Nutr. 2022 Jun 7;115(6):1457-1472. doi: 10.1093/ajcn/nqac044. PMID: 35170727; PMCID: PMC9170471.
    • Williams NI, Mallinson RJ, De Souza MJ. Rationale and study design of an intervention of increased energy intake in women with exercise-associated menstrual disturbances to improve menstrual function and bone health: The REFUEL study. Contemp Clin Trials Commun. 2019 Jan 18;14:100325. doi: 10.1016/j.conctc.2019.100325. PMID: 30723840; PMCID: PMC6353734.