Presentations, Writing, Media

Nanci is available for written / live interviews, TV appearances, commercials, seminars, marketing projects and more…

Please call / email for more info.

Speaking

Professional seminars available on a variety of topics from general nutrition and fitness to nutrigenomics forhealth and sport to advanced strategies for athlete training and performance nutrition. Invest in quality for your professional presentations at academic meetings, sports/training camp venues, office/corporate clients, schools, fitness facilities or at other private or public locations.

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Research

Nanci has published hundreds of nutrition columns and articles in addition to peer-reviewed publications. Skilled research services for your articles or educational/resource materials.

Fee structure for this service will vary, depending on the topic to be researched and the amount of time allocated to the research process. Please contact

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Writing

Inform, educate, entertain. Articles pertaining to health, fitness, sport/general nutrition or nutrigenomics will be tailored to suit your goals and target readership.

Prices will vary depending on the time needed to research your topic, and the length of the article. Some Pro Bono writing provided, please contact for details.

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Publications

Original Articles

  • Messina, V, Guest, NS, Alison Duncan, A, Mangels, R, Norris, J, Ruscigno, M, Glenn, A, Wolfram, T, Marinangeli CPF, Messina, M. Dietary guidance on plant-based meat alternatives for individuals wanting to increase plant protein intake. Front Nutr. 2025 Aug 5;12:1641234.
  • Raj, S, Guest, NS, Landry, M, Pawlak R, Mangels, R, Senkus K, Rozga, M. Vegetarian Dietary Patterns: A Position of the Academy of Nutrition and Dietetics. J Acad Nutr Diet. 2025 Jun;125(6):831-846.e2.
  • Guest, NS, Raj, S, Landry, M, Mangels, R, Pawlak R, Senkus K, Handu D, Rozga, M. Vegetarian and Vegan Dietary Patterns to Treat Adult Type 2 Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Adv N 2024 Oct;15(10):100294.
  • Landry, M, Senkus K, Mangels, R, Guest, NS, Pawlak R, Rozga, M. Relationships between Vegetarian, Vegan & Non-Vegetarian Diets and Prevention of Cardiovascular Risk Factors and Disease: An Umbrella Review of Systematic Rev’s. Am J Prev Cardiol. 2024 Sep 28;20:100868.
  • Guest NS, Sicova M, and El-Sohemy A. Caffeine, ADORA2A genotype and Endurance Performance in Male Athletes: Randomized Controlled Trial. (under review)
  • Sicova M, Guest NS, Tyrrell, P and El-Sohemy A. Caffeine, Genetic Variation and Anaerobic Performance in Male Athletes: Randomized Controlled Trial. Eur J Appl Physiol. 2021 https://doi.org/10.1007/s00421-021-04799-x
  • Wong O, Marshall K, Sicova M, Guest NS, et al. CYP1A2 Genotype Modifies the Effects of Caffeine Compared With Placebo on Muscle Strength in Competitive Male Athletes. Int J Sport Nutr Exerc Metab. 2021 Jul 20:1-7.
  • Guest, N.S., et al. VanDusseldorp, T.A., Nelson, M.T. et al. International society of sports nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr 18, 1 (2021).
  • Guest, NS and Lynch, H. Plant Based Diets and Athletic Performance. Aspetar J Sport Med, Volume 15, p 10. 2021.
  • Wong O, Marshall K, Sicova M, Guest NS, et al. CYP1A2 Genotype Modifies the Effects of Caffeine Compared With Placebo on Muscle Strength in Competitive Male Athletes. Int J Sport Nutr Exerc Metab. 2021 Jul 20:1-7.
  • Guest, NS. Vegan and Plant-Based Diets in Sport and Exercise. NutritionX https://www.nutritionx.co.uk/nutrition-hub/x-change/nutrition-x-change-vol-10-plant-based-and-vegan-diets-in-exercise-and-sport/ 2021. 
  • Guest, NS and Lynch, H. Plant Based Diets and Athletic Performance. Aspetar J Sport Med, Volume 15, p 10. 2021.. 
  • Thakkar D, Sicova M, Guest N, Garcia-Bailo B, El-Sohemy A. HFE Genotype and Endurance Performance in Competitive Male Athletes. Med Sci Sports Exerc. 2020 Dec 29;PAP.
  • Guest, N., Corey, P., and El-Sohemy A. Caffeine, HTR2A genotype and endurance performance in athletes. J Strength Cond Res.
  • Guest, N., Horne, J. Vanderhout, S., El-Sohemy A. Sport Nutrigenomics: Personalized nutrition for athletic performance. Frontiers –Nutrition. Feb 2019 https://doi.org/10.3389/fnut.2019.00008
  • Guest, N., Corey, P., Vescovi J., and El-Sohemy A. Caffeine, CYP1A2 genotype and endurance performance in athletes. 2018. Medicine and Science in Sports and Exercise. 50(8):1570-1578.
  • Guest, N., and Barr, SI. Dietary Restraint and Stress Fractures in Women Runners. 2005. International Journal of Sports Nutrition and Exercise Metabolism. Volume 15 (2), 147-159.

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Media

Nanci regularly participates in interviews with media, guests on podcasts and is interviewed for various publications.

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