HUM works exclusively with the best Registered Dietitian Nutritionists who have a wealth of experience and outstanding academic training in the field of nutrition. HUM Nutritionists share a strong interest in nutrition and how it can impact your skin, weight, aging and mood. HUM's philosophy aligns perfectly with nutritionists', whereby proper nutrition is instrumental to personal wellness and a healthy lifestyle.

That is why HUM provides each customer with a free nutrition report and connects you with a personal nutritionist. HUM believes in supplementing with micro nutrients to balance deficiencies and to provide nutrients that help achieve specific beauty and wellness goals that are hard to get just from diet. Our nutritionists use their vast experience and knowledge to help you on this journey to health and wellness.

Working closely with Registered Dietitian Nutritionists is what makes us unique, by allowing us to deliver a truly personalized service. If you have a fundamental background and interest in nutrition, and you would like to learn more about joining the HUM family, please email

Our Nutritionists
Sarah Greenfield, RD, CSSD
Sarah Greenfield RD, CSSD is a Registered Dietitian with a certification in sports nutrition and functional medicine.
Full Bio
Alexandra Caspero, MA, RD
Alex is a nationally recognized Nutritionist and appears regularly on TV, print and social media.
Full Bio
Jessica Nelson, RDN, NASM-CPT
Jess Nelson RDN, CPT is a Registered Dietitian Nutritionist, NASM Certified Personal Trainer, and owner of Nutrition Sense for Life.
Full Bio
Jessica Bippen, MS, RD
Jessica Bippen, MS, RD is a Registered Dietitian with a passion for health and wellness.
Full Bio
Carrie Gabriel, MS, RDN
Carrie is a dietitian certified in weight management and is based in Los Angeles.
Full Bio
Gaby Vaca-Flores, RD
Gaby is a dietitian based in Los Angeles CA who loves teaching how a balanced diet can lead to glowing skin.
Full Bio