The Real Deal


  • Not your run-of-the-mill, Band-Aid solution. This package is for the open-minded individual desiring to become his/her own Eathority.


  • One-on-one counseling will change your relationship with food.


  • Weight loss is not the focus of this program, but a satisfying by-product of a healthier, more fulfilling lifestyle.


  • Factors that limit your progress will be examined, including emotional barriers, eating patterns, exercise, sleep, stress levels, and even internet-connectedness.


  • Package includes 6 sessions over 8 weeks
    • One 90-min comprehensive assessment
    • Five 45-minute follow-up sessions




The Meal Deal


  • Are all those power lunches derailing your weight loss efforts?


  • I’ll help you navigate menu minefields so you can make sure lunch expands your wallet and not your waist.


  • This option includes one 2-hour lunch at a restaurant of your choice (oh, and lunch is on you).



Kitchen Skillz 101


  • Don’t know a teaspoon from a tablespoon? Need help with kitchen basics?


  • Together we’ll shop for must-have kitchenware and fresh produce. Then I’ll show you how to whip up simple, flavorful meals. Healthy, of course.


  • This package includes travel within Manhattan for:
    • 1-hour kitchenware run
    • 1.5-hour grocery store run
    • 2-hour at-home cooking lesson


  • Kitchenware and groceries not included in pricing




Grocery Store Shakedown


  • Overwhelmed by what’s in those grocery store aisles?


  • I’ll walk you through the labyrinth and show you what’s worth the hype and what’s not.


  • This option includes a 1.5-hour grocery store tour at a Manhattan store of your choice.



  • Not interested in counseling, but would like help picking out healthier options at nearby restaurants and markets?


  • I’ll highlight convenient, healthy choices near work, home, in your favorite restaurants and at the airport.


  • This option includes 15 restaurant menu reviews.


Medical Nutrition Therapy


  • Do you have a medical need for nutrition education?


  • If you have an autoimmune disorder, are undergoing cancer treatment or recovering from a stroke, let me educate you on foods to include and assist you in problem solving around daily nutrition obstacles.


  • This package includes 3 sessions
    • One 90-minute comprehensive assessment
    • Two 30-minute follow-ups
    • Meal plans

Go With Your Gut


  • Looking to optimize your health by rebalancing your gut?


  • Is IBS or general digestive discomfort ruling your life?


  • Eathority will meal plan your way to regularity by ruling out dietary offenders and recalibrating your gut flora. Your GI tract and immune system will thank you.


  • This package includes 4 sessions over 8 weeks
    • One 90-minute comprehensive assessment
    • Three 45-minute follow-ups


Shedding for the Wedding



  • Need to slim down for the big day, but can’t do it alone?


  • Want a trimmer physique for a big event, but need a kick in the butt to get you started?


  • Eathority will put you in touch with top trainers, and get you in tip-top shape with motivation and meal plans galore.


  • This package includes 6 sessions over 8-12 weeks
    • One 90-minute comprehensive assessment
    • Four 45-minute follow-ups before the big day
    • One 45-minute follow-up after the big day (to make sure all your pre-event efforts are not in vain)



Freshman  No



  • Heading to college and want to avoid the dreaded
    "Freshman 15"?


  • Still a high schooler and need some guidance on healthy eating and body image?
  • Eathority will talk you through nutrition basics so you can focus on your studies and not your waistline.


  • This package includes 2 sessions
    • One 90-minute initial assessment
    • One 60-minute follow-up

Gene Glean

  • Ever wonder how some people drink coffee all day with no issues, but one cup gives you heart palpitations?


  • Nutrigenomix testing helps you "eat according to your genes" by revealing what your body needs relative to standard recommendations.


  • Saliva testing analyzes 45 gene markers involved in the following metabolic and lifestyle activities:
    • Vitamins: A, B12, C, D, E, folate
    • Minerals: Iron, Calcium, Sodium
    • Food Intolerances: Caffeine, Lactose, Gluten
    • Macronutrients: Protein, Total Fat, Omega-3 Fat, Saturated Fat, Unsaturated Fat
    • Lifestyle: Eating Habits, Energy Balance, Physical Activity, Achilles Injury Risk


  • This package includes 2 sessions
    • One 15-minute saliva test
    • One 60-minute follow-up to discuss test results



Cabinet Cleanse


  • Does your kitchen or office pantry need an exorcism?


  • Wondering if that yogurt brand is actually any good?


  • Eathority will purge your pantry and fridge to make sure you're getting the most out of your food purchases.


  • This option includes one 90-minute home or office visit.

Eathority's Approach

Eathority’s goal is to nurture collaborative partnerships with clients to help them achieve nutrition goals that are safe and sustainable. This is not a practice that promotes “cleanses” and “detoxes”. Eathority is about real food and evidence-based practices to prevent or manage chronic disease. No food is restricted, but nutrient-rich choices are the central focus. Supplements, unless medically indicated, are kept to a minimum due to the insufficient science on which most are based.


Unlike other private practices, Eathority doesn't just tell you what to eat. Carol will help you explore your unique food history to better understand why you eat what you eat and how you can change it. New behaviors will become reliable mainstays. Carol can also help you sort through the muck of nutrition misinformation to show you which fads are worth the hype, and which to ditch.


Is Eathority right for you?

Eathority‘s programs are tailored to your needs and lifestyle, but flexibility and open-mindedness are key to your success. Curiosity, self-introspection and a willingness to address behaviors that undermine long-term health goals will also lead to ongoing results.


How do I start?

To set yourself up for a healthy outcome, contact Eathority at:



What is Eathority?

Eathority is a Manhattan-based private nutrition practice founded by Carolina (Carol) Guizar, a Registered Dietitian Nutritionist. Carol believes life is not about extremes, so neither is Eathority. You will learn to embrace a balance of Eat to Live and Live to Eat to optimize your health while not feeling deprived.


Carol gained valuable clinical experience at Montefiore Medical Center and Montefiore-Einstein Center for Cancer Care in the Bronx, New York, where she established a comprehensive nutrition program for breast cancer patients and survivors. She holds a Master of Science in Clinical Nutrition from New York University and a Bachelor of Arts in History and Spanish from Georgetown University. Carol is fluent in Spanish.


Carol is a member of the following professional organizations and dietetic practice groups:


    Academy of Nutrition and Dietetics

   Weight Management

    Sports, Cardiovascular, and Wellness Nutrition

    Oncology Nutrition

    Women's Health

    Dietitians in Integrative and Functional Medicine



Eathority’s counseling services are designed to address your nutrition-related issues, including:


  • Weight loss

  • Emotional eating

  • High cholesterol

  • High blood pressure

  • Pre-diabetes and diabetes

  • Irritable bowel syndrome (IBS)

  • Polycystic ovarian syndrome (PCOS)

  • Breast cancer management


Peruse the menu below to find your best fit. Email for a price list.



To improve patient and customer food experiences, Carol accepted a position in the food service department at Montefiore Medical Center located in the Bronx, New York. She now offers her consulting services to other institutions. These include:


  • Nutrient analysis
  • Menu development
  • Recipe standardization


For a quote, email

Submitting Form...

The server encountered an error.

Form received.



131 W. 3rd St. 4th Floor

New York, NY 10012


Eathority’s office is located in Manhattan’s Greenwich Village. It is easily accessible by subway (blue and orange lines to West 4th) or bus. Parking is available across the street at Minetta Garage.


Please contact Eathority for off-hour appointment requests.


Insurance clients must be seen in Eathority’s office. If you are a non-insurance client, Eathority may travel to your home, office or computer screen. Please note that travel incurs additional charges.


Eathority accepts the following insurance plans:


Aetna, Cigna, Emblem, Oscar


For clients whose insurance we do not accept, Eathority will provide paperwork for you to pursue reimbursement or apply towards flex spending.


Follow Eathority’s adventures on Instagram to figure out healthy eats and worthwhile splurges: @eathority


For more information and reviews, visit Eathority’s Yelp page.

Appointment Hours:

Tuesday: 8am - 7pm

Friday: 8am - 7pm

Saturday: 11am - 5pm

©Eathority, 2016