Julia Zakrzewski, RD

Sarah-Nicole Bostan, Ph.D., B.C.B.

Director of Behavior Change Strategy

Sarah-Nicole Bostan has a PhD in Clinical Health Psychology & is Board Certified in Biofeedback. She is energized by helping people create positive behavior changes for lasting health and thriving.

Sarah Zimmer, PT, DPT

PT, DPT

Jodi Geigle, AADP CHC

Medical Reviewer

Jodi Geigle, AADP CHC, is a nutritionist and a certified sports science nutrition & exercise physiology coach. She's the Director of Customer Experience at Signos and also heads up the overall nutrition messaging, in-app nutrition experiences, nutrition consultations, and more.

Alyssa Wilson, RDN, MS, LD

Medical Reviewer

Alyssa Wilson is a registered dietitian and metabolic health coach for Signos. She developed personalized nutrition plans and coaching for employees at the Centers for Disease Control and at MealMD.

Merve Ceylan

Health Writer & Dietitian

Merve Ceylan is a dietitian and health writer.

Kelsey Butler, MS, RDN

Nutrition Writer

Kelsey Butler is a registered dietitian nutritionist with a master’s in Clinical Nutrition Sciences.

Chelsea Rae Bourgeois, MS, RD

Health writer

Chelsea Rae Bourgeois is a registered dietitian nutritionist with several years of experience working in the clinical setting. Once a track and field athlete on a competitive stage, she now finds joy in combining her passions as a health writer to help people embrace their wellness through nutrition and fitness.

Hailey Hudson

Health & Fitness Writer

Hailey Hudson is a full-time medical, health, marketing, and pet writer. She's written for Heathline, Livestrong, Runner's World, Dell, and more.

Thomas DeLauer

Health & Fitness Lifestyle Writer

Thomas DeLauer is an expert in diet, nutrition, and mindset. He is motivated by a guiding ethos of integrated optimization: if you perform better, so does the world.

Spencer Brooks

Health Writer

Spencer Brooks is a science writer and editor who also specializes in health, nutrition, and psychology. He has a bachelor’s degree in neuroscience and is the founder of Elephant Creative Studio.

Kristen Carli, MS, RD

Kristen Carli is the owner of Camelback Nutrition & Wellness. She graduated from University of Arizona with a BA in psychology and then received a BS in dietetics from Arizona State University.

Meaghan Wamboldt, CPT, Pn1

Health Writer

Meaghan Wamboldt is an ACE certified personal trainer, Functional Nutrition Specialist and Precision Nutrition Level 1 certified coach. She is the Content Marketing Manager at Signos.

Caitlin Beale, MS, RDN

Health & Nutrition Writer

Caitlin Beale is a registered dietitian and nutrition writer with a master’s degree in nutrition. She has a background in acute care, integrative wellness, and clinical nutrition.

Courtney Schmidt, PharmD

Health Writer

Courtney Schmidt, PharmD, is an award-winning freelance health writer whose work has appeared on a variety of well-known health and wellness publications.

Andrew J. Funk, DC, DACNB

Health & Science Writer

Dr. Andrew Funk has held board certification in neurology with the American Chiropractic Neurology Board since 2015.

Ashley Pitt, CPT, Pn1

Fitness Writer

Ashley Pitt is a NASM certified personal trainer, a group fitness instructor, a Precision Nutrition level 1 coach and the creator of the wellness and lifestyle blog, A Lady Goes West.

Peter Palmieri, MD

Health Writer & Medical Reviewer

Peter Palmieri is a licensed physician in Texas. He practiced pediatrics for over 20 years in underserved communities.

Sabrina Tillman

Health & Fitness Writer

Sabrina has more than 20 years of experience writing, editing, and leading content teams in health, fitness, nutrition, and wellness. She is the former managing editor at MyFitnessPal.

Amanda Capritto, CPT, CHC, CF-L1

Fitness Writer

Amanda is a certified personal trainer, CrossFit Level 1 trainer, health coach, journalist, and writer who specializes in fitness, health, travel, and adventure.

Laura M. Ali, MS, RDN, LDN

Health & Nutrition Writer

Laura is an award-winning food and nutrition communications consultant, freelance writer, and recipe developer.

Cathleen McKnight, DNP, MS, NP-C, NCMP

Women's Health Writer

Dr. Cathleen McKnight is a licensed nurse practitioner in Ohio.

Danielle Kelvas, MD

Medical & Health Writer

Dr. Danielle Kelvas, MD, earned her medical degree from Quillen College of Medicine at East Tennessee State University in Johnson City, TN.

Victoria Whittington, RDN

Victoria Whittington earned her Bachelor of Science in Food and Nutrition from the University of Alabama and has over 10 years of experience in the health and fitness industry.

Signos team

Health & Fitness Writers

The Signos team is made up of a medical doctor, certified health coaches, a data scientist, and experienced health, science, and wellness writers.

Leann Poston, MD, MBA, M.Ed

Medical Writer

Leann Poston, MD, is a licensed physician in Ohio who holds an MBA and an M.Ed. She is a medical writer and educator who researches and writes about medicine, education, and healthcare administration.

Mia Barnes

Staff Writer

Mia Barnes is a health writer and researcher who specializes in nutrition, fitness, and mental health.

Katherine Morgan

Nutrition Coach

Kate Morgan is a certified nutrition coach with a BS in Biology from the University of North Georgia.

Rebecca Washuta

MS, CNS, LDN

Rebecca Washuta is a licensed dietitian with degrees in neuroscience and nutrition and helped individuals develop long-term health habits and achieve various wellness goals.

Bill Tancer

Chief of Data Science

Bill Tancer is a New York Times best-selling author. He is a co-founder and the chief data scientist at Signos and the creator and host of Signos’ podcast, Body Signals.

Landon Pemper

Health & Science Writer

Holding over 10 years of experience in content creation for both digital and print mediums, Landon specializes in writing for multiple industries, including health and wellness.

William Dixon, MD

Medical Writer & Reviewer

William Dixon, MD, M.Ed., is a clinical assistant professor at Stanford University, emergency physician, Signos co-founder, and disease prevention proponent.

Julia Zakrzewski, RD

Health & Nutrition Writer

Julia Zakrzewski is a Registered Dietitian and nutrition writer. She has a background in primary care, clinical nutrition, and nutrition education. She has been practicing dietetics for four years.

Sarah Bullard, MS, RD, LD

Dietitian and Nutrition Writer

Sarah Bullard is a registered dietitian and nutrition writer with a master’s degree in nutrition. She has a background in research and clinical nutrition, personalized nutrition counseling, and nutrition education.

Chikodi Chima

Staff Writer

Chikodi Chima is a journalist and author who has spoken internationally about health wearables.

April Benshosan

Health Writer

April is a writer, editor, and content strategist with a Master’s degree in Publishing.

Amelia Sharp

Health Writer

Amelia Sharp is a medical, health, and addiction recovery writer who is passionate about helping people receive the help they need.