Top Nutrition and Fitness Influencers Experts 2025

A passionate nutrition and fitness enthusiast dedicated to simplifying complex health concepts. Drawing from personal experiences and in-depth research, he aims to empower readers with practical insights and actionable knowledge for a healthier, balanced life.

Dr. Rimas Geiga is a distinguished professional with a diverse skill set, serving as a Medical Doctor, Registered Dietician, and Clinic Nutritionist. With a solid foundation in healthcare, he plays a pivotal role as a private advisor to a consortium of companies operating in the health and wellness sector, offering valuable insights and strategic guidance. In addition to his advisory role, Dr. Geiga is actively engaged in hospital work, bringing his expertise to the forefront of patient care. His commitment to providing quality healthcare is evident in his contributions to the medical field, where he tirelessly works to enhance the well-being of those under his care. Beyond his medical pursuits, Dr. Geiga finds joy in various hobbies that contribute to his well-rounded personality. An avid enthusiast of culinary arts, he explores the world of flavors through his cooking endeavors. Dr. Geiga also embraces an active lifestyle, indulging in cycling adventures that not only promote physical fitness but also reflect his passion for outdoor activities. Wine tasting stands out as another of Dr. Geiga's interests, where he enjoys unraveling the complexities of different varietals and appreciating the artistry behind each bottle. His love for travel allows him to explore diverse cultures, further broadening his perspectives and enriching his experiences. Dr. Rimas Geiga's multifaceted professional background, combined with his dedication to health and wellness, showcases a holistic approach to his career. His commitment to patient care, coupled with a vibrant array of hobbies, underscores his well-balanced and dynamic presence in both the medical and personal spheres of life.

Jackie Newgent, RDN, CDN, is a distinguished culinary nutrition expert and thought leader who seamlessly bridges the worlds of professional cooking and nutritional science. As a classically trained chef and registered dietitian, she has established herself as a preeminent voice in plant-forward cuisine and innovative food education. With multiple award-winning cookbooks and a robust media presence, Newgent has emerged as a highly sought-after authority in culinary nutrition and wellness. A respected industry influencer, Jackie serves on the Forbes Health advisory board and leverages her extensive expertise as a national media personality and contributor to national health platforms like U.S. News & World Report. Her professional journey includes an impressive tenure as a chef instructor at the prestigious Institute of Culinary Education in New York City. Currently, she continues to shape culinary education as an instructor at The Gourmandise School in Santa Monica and through her private teaching. Newgent's professional portfolio extends beyond traditional roles, serving as a nutrition coach for My Peak Challenge and a strategic culinary nutrition advisor to major food companies and emerging plant-centered businesses. Her multifaceted approach to nutrition and cooking has positioned her as a unique and influential professional who is reshaping how we understand the intersection of food, health, and sustainability. Based in Los Angeles, Jackie continues to inspire and educate through her dynamic work across media, education, and culinary innovation.

I'm Justina - a Nutritional Therapist and Health Coach with a passion for helping others feel their best. My journey began with my own health struggles, which inspired me to dive deep into the world of nutrition and holistic wellbeing. I hold a Diploma in Nutritional Therapy from the College of Naturopathic Medicine and a Health Coaching Certificate from Zest4Life. Now, I support others in making sustainable, nourishing changes that empower them to take control of their health and thrive.

I'm the founder of Fitness Image and a former competitor on Ninja Warrior Australia. I spent ten years representing Australia as an international athlete in short track speed skating. Now, I combine my experience at the elite level with science-based training methods to help my clients achieve exceptional results.