516-466-4279• Email Nancy
NYS Certified Dietitian-Nutritionist (CDN), Registered Dietitian Nutritionist (RDN), MS, CNS • Long Island, Queens, New York & Online
  • AboutAbout Nancy Nancy Mazarin is a Registered Dietitian (RD) and Certified Nutritional Specialist (CNS) with a Master’s Degree in Nutrition from Columbia University. She is also a Certified Dietitian Nutritionist (CDN) in the State of New York. Nancy’s career path has always been in the science field, starting as a researcher at the Albert Einstein College of Medicine. Her love of science, combined with her interest in nutrition, eventually led her to pursue her Master’s Degree. In her endeavors, Nancy has worked as a medical nutrition consultant for hospitals and physicians, taught college-level courses and reviewed scholarly nutrition education articles. Nancy has worked with hundreds of patients, helping them to understand the ever-changing science of nutrition and create programs that are tailored to their own health goals. Included in these individualized plans are education, meal planning and behavior modification. As a food and nutrition expert, Nancy translates the science of nutrition into practical everyday solutions. DEGREES B.A. with a major in biology M.S. in nutrition from Columbia University R.D. from the American Dietetic Association CNS: Certified Nutrition Specialist (American College of Nutrition) CDN: Certified Dietitian Nutritionist (New York State certification) MEMBERSHIPS American Dietetic Association Diabetes Care and Education practice group…
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  • Medical Nutrition TherapyMedical Nutrition Therapy Food is the fuel for your body and the cornerstone of your health. When you face medical issues that challenge your well-being, proper nutrition can be a powerful tool to restore your health. Medical Nutrition Therapy is an essential part of your comprehensive health care, enabling you to optimize health and well being. Patients with medical issues are usually referred to Nancy by physicians or hospitals. Nancy works with your doctor using an integrative approach to understand your medical needs. She translates research into practice and develops an intervention plan. At the initial consultation, Nancy evaluates your medical history, diet, habits, and lifestyle to determine when, where and how to modify your nutrition plan to achieve lifelong health. Your customized eating program will include: • Nutrition Education • A personalized meal plan that incorporates simplicity and flexibility • recommendations for specific foods and patterns of food choices to match your unique health needs Some of the medical issues Nancy has addressed through Medical Nutrition Therapy include: GASTROINTESTINAL DISORDERS: Crohn’s and Colitis; Irritable Nowel Syndrome; Diarrhea or Constipation; Celiac Disease/Gluten Sensitivity; GERD/Heartburn; Diverticular disease CARDIOVASCULAR/HEART HEALTH: Cholesterol; Triglycerides; Hypertension; Congestive Heart Failure ENDOCRINOLOGY: Diabetes Mellitus; Pre Diabetes; Hypoglycemia; Fatty…
    • Diabetes & Endocrine Issues
    • Cardiovascular/Heart Health
    • Fatty Liver Disease
    • Food Allergy – Sensitivity – Intolerance
    • Gastrointestinal/Digestive Disorders
    • SIBO & IBO
    • Renal Disease
    • Binge Eating
    • Geriatrics
  • Weight ManagementWeight Management Therapy Reaching and maintaining a healthy weight is a challenge for many people. One-size-fits-all programs are unrealistic, rarely result in weight maintenance and can be detrimental to good health. Success comes from sustained changes in eating that become incorporated into your daily routine. Your initial consultation with Nancy will allow her to: Assess your dietary needs and current eating practices. Understand your home, work and social environment. Identify what areas need improvement and where good choices and habits already exist. You will work together to develop a personalized plan with specific foods and patterns of food choices. You will be given the tools to promote positive behavior changes. *You do not need to eating special foods to lose weight *You do not need to be restrictive and deprived to lose weight *You do not need to be perfect to lose weight *You do not need to eat differently from your family or friends to lose weight Healthier food choices, blended with behavior changes and sound nutrition information will guide you to your optimal weight and health. Your action plan will: Set realistic and sustainable goals Analyze your dietary needs Get to the root of your food issues Provide…
    • Weight Gain
    • Weight Loss
  • Specialty Diets
    • Anti Inflammatory Diet
    • Dairy Free – Lactose Intolerance
    • Elimination Diet
    • FODMAP
    • Celiac / Gluten Free Diet
    • Plant Based Plans
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  • Homecontact info is 935 Northern Boulevard; Suite 301; Great Neck, NY 11021 516-466-9087 nmeatrite@mazarinrd.com Contact Info-On every page This will be on every page in a sidebar Nancy Mazarin, MS, RD, CDN Medical Nutrition Consultant like this on each page as a side bar   Sidebar widget: Nancy Mazarin is a Nutritional Consultant with a private practice in Great Neck, NY. With more than thirty years experience, Nancy employs practical nutritional tools to create long-term solutions. With her help, you can build a personalized program to improve your health, enhance your quality of life, achieve optimal weight goals, and address medical issues. • Are you struggling with weight issues? • Do you have a history of weight cycling? • Have you been diagnosed with medical conditions such as Diabetes, Cardiovascular disease, Hypertension, Reflux or Irritable Bowel Syndrome? • Has your energy and quality of life diminished? • Are you ready to feel better and become the best YOU? Nancy Mazarin is a Nutrition Consultant with a private practice in Great Neck, NY. She has practical every day solutions from over 30 years of working with doctors, patients and a full spectrum of medical conditions. She can help you (in bold): Pinpoint…
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Tips on How to Eat to Limit Progression and Manage Symptoms of Parkinson’s Disease
Blog, Geriatrics

RDN Tips on How to Eat to Limit Progression and Manage Symptoms of Parkinson’s Disease

Doing your best to remain healthy and strong is key for everyone with Parkinson’s disease. Following a balanced diet improves general well-being, increases your ability to deal with symptoms of the disease, and may limit the progression…
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October 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/10/Oct-1_Parkinsons.jpg 667 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-10-01 11:05:142024-05-28 15:39:16RDN Tips on How to Eat to Limit Progression and Manage Symptoms of Parkinson’s Disease
slow parkinson's progression
Blog, Geriatrics

Slow Progression of Parkinson’s Disease with Nutrition Therapy from a Long Island Dietitian

Is there a Role for nutrition in Parkinson’s Disease? ABSOLUTELY:  You can slow disease progression and improve symptoms! Increasing evidence suggests the way you eat may impact not just the development of Parkinson’s, but the progression…
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September 15, 2023
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Blog, Diabetes and Endocrine Issues, Health & Nutrition

The Food Plan to Prevent and Manage Diabetes, explained by a registered dietitian nutritionist

The prevalence of type 2 diabetes is rising worldwide, especially in older adults. Diet and lifestyle are effective tools for type 2 diabetes prevention and management. Though a plant-based food plan may be new to the public, it is not new…
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September 1, 2023
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Brain Food
Blog, Health & Nutrition

Dietary Interventions to Improve Brain Health from a Long Island RDN: WHAT IS GOOD FOR YOUR BODY IS GOOD FOR YOUR BRAIN

  ARE YOU CONCERNED ABOUT BRAIN HEALTH AND COGNITIVE DECLINE?   Many people, including a significant number of my patients, only consider their body’s nutritional needs, meaning from the neck down. But the neck up, the brain,…
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August 15, 2023
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Healthy Life
Blog, Weight Loss

Long Island Dietitian Tips on How to Maintain Weight Loss after Ozempic: Lose Weight and Keep it Off

In my last blog I discussed the Ozempic-Wegovy weight-loss boom. These medications are being publicized as the latest magic to lose weight. Beware because the bigger problem is keeping the weight you lost off. Achieving meaningful weight…
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August 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/08/iStock-491933606_web.jpg 533 800 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-08-01 16:05:052024-05-28 15:40:35Long Island Dietitian Tips on How to Maintain Weight Loss after Ozempic: Lose Weight and Keep it Off
person takes ozempic
Blog, Weight Loss

Long Island Certified Nutritionist Discusses OZEMPIC AND WEGOVY – Is this the new miracle weight loss drug??????

The news has been flooded with reports of Ozempic and Wegovy. Originally developed to treat diabetes, people have experienced rapid weight loss when taking these medications.  As a registered dietitian with over 30 years working with…
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July 31, 2023
https://mazarinrd.com/wp-content/uploads/2023/07/Ozempic_Web-2.jpg 563 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-07-31 09:22:332024-05-28 15:40:53Long Island Certified Nutritionist Discusses OZEMPIC AND WEGOVY – Is this the new miracle weight loss drug??????
Nonalcoholic Fatty Liver Disease (NAFLD) illustration
Blog, Diabetes and Endocrine Issues, Weight Loss

Treat or Reverse Nonalcoholic Fatty Liver Disease (NAFLD) with an Individualized Diet Plan from a Long Island RDN

Question: Should I be worried about nonalcoholic fatty liver disease? Answer:  Yes, you should be concerned. You need to learn what you can do to reverse this progressive disease.   Your liver is one of the largest organs in your…
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July 15, 2023
https://mazarinrd.com/wp-content/uploads/2023/07/NAFLD-1.jpg 507 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-07-15 01:51:032024-05-28 15:41:13Treat or Reverse Nonalcoholic Fatty Liver Disease (NAFLD) with an Individualized Diet Plan from a Long Island RDN
Healthy food in heart diet
Blog, Cardiovascular - Heart Health, Health & Nutrition

Improve Heart Health with a Diet Plan from a Long Island RDN: Ingredients of a Heart Healthy Diet

Hearts are an amazing muscle – beating about 100,000 times every day to keep us alive.  What you eat – or don’t eat, increases or decreases the risk of heart attack, stroke, and heart failure, as well as type 2 diabetes, hypertension,…
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July 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/07/Mazarin_July1.jpg 515 800 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-07-01 14:15:552023-07-10 14:16:15Improve Heart Health with a Diet Plan from a Long Island RDN: Ingredients of a Heart Healthy Diet
Blog, Cardiovascular - Heart Health, Health & Nutrition

Eating Patterns Recommendations for Healthy Aging from New York Dietitian Nutritionist: Dietary Recommendations for Seniors

In my last blog, I explained how important nutrition is for both prolonged life expectancy and decreased chronic, degenerative disease. Now you need to understand how and what to eat. Research has found that healthy dietary “patterns”,…
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June 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/06/HealthyAging-2.jpg 534 800 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-06-01 11:39:192023-07-07 14:44:43Eating Patterns Recommendations for Healthy Aging from New York Dietitian Nutritionist: Dietary Recommendations for Seniors
Group of senior friends smiling
Blog, Geriatrics

Do older adults have different nutrition needs than younger adults? New York Dietitian Nutrition Tips for Seniors

Just like children do not have the same nutrition needs as adults, older adults have different nutrition needs. And there is no definition for “older adults”.  In my practice I define it as over 60. Both the science and my observation…
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May 15, 2023
https://mazarinrd.com/wp-content/uploads/2023/05/May-15-2023_older-adults.jpg 836 1254 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-05-15 14:17:522024-05-28 15:41:40Do older adults have different nutrition needs than younger adults? New York Dietitian Nutrition Tips for Seniors
inflammatory bowl syndrome
Blog, Gastrointestinal - Digestive Disorders

What you need to know about Food Additives and Inflammatory Bowel Disease: Improve Gut Health with Tips from New York Certified Dietitian Nutritionist

The incidence and prevalence of inflammatory bowel disease, which includes Crohn’s disease and colitis, has increased over the 21st century.  Though the exact cause is unclear, there appears to be an interaction between environmental…
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May 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/05/aE6V1R0M.jpeg 434 805 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-05-01 08:52:532024-05-28 15:42:15What you need to know about Food Additives and Inflammatory Bowel Disease: Improve Gut Health with Tips from New York Certified Dietitian Nutritionist
Fiber types and benefits
Blog, Cardiovascular - Heart Health

Soluble Fiber – why it is so important, explained by a Long Island Registered Dietitian Nutritionist

  Fiber is a nutrient found in carbohydrates. Unlike other food components, such as fats, proteins, or carbohydrates, which your body breaks down and absorbs, fiber is that part of the plant that we cannot digest. Instead, it passes…
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April 15, 2023
https://mazarinrd.com/wp-content/uploads/2023/04/April_15_2023.jpg 977 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-04-15 10:25:162024-05-28 15:42:25Soluble Fiber – why it is so important, explained by a Long Island Registered Dietitian Nutritionist
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Latest Posts

  • Healthy eating
    What Is a Vegetarian Diet?October 14, 2025 - 4:18 pm

    What is a Vegetarian Diet? Explained by a Long Island Registered Dietitian Nutritionist Vegetarian diets are becoming increasingly popular for their health, ethical, and environmental benefits. I often work with individuals who want to design a balanced vegetarian or vegan eating plan. With the right knowledge and a bit of planning, a vegetarian diet can […]

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    Menopause and Weight Gain A Women’s Health Dietitian Provides Tips for Weight Management Menopause is a natural physiological process that marks the end of a woman’s reproductive years. It occurs when a woman has not had a menstrual period for 12 consecutive months and is caused by the gradual decline in estrogen and progesterone production […]

  • Healthy Carbs
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    Can You Eat Carbs and Lose Weight? Not only can you eat carbs and lose weight—you need them. Carbohydrates fuel your body, support brain function, and play a key role in long-term health and weight management. What Are Carbs? Carbohydrates include all foods in the plant kingdom – those that grow in the ground: fruits, […]

  • Chronic Kidney Disease
    Nutrition Plan for Chronic Kidney Disease – Long Island Renal Dietitian’s RecommendationsAugust 15, 2025 - 3:15 pm

    What is CKD? Chronic kidney disease, or CKD, means your kidneys aren’t working as well as they should. The kidneys filter waste and extra fluid from your blood, which then leave your body as urine. When they cannot filter blood effectively, waste and fluid build up in the body. This damage usually progresses slowly and […]

  • Nutrition for Heart Health
    Nutrition for Heart Health, Long Island Nutritionist for Cardiovascular DiseaseAugust 1, 2025 - 5:05 pm

    Nutrition for Heart Health: Guidance from a Long Island Registered Dietitian Cardiovascular and cardiometabolic diseases are on the rise, and with them, the importance of sound, science-backed nutrition guidance. As a Registered Dietitian Nutritionist (RDN), I help patients manage blood pressure and cholesterol levels, reduce cardiovascular risk, and adopt sustainable lifestyle changes rooted in evidence […]

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Nancy Mazarin - Certified Nutritionist & Registered Dietitian MS, RDN, CDN, CNS
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Amy Pedolsky
17:02 26 Dec 22
Over the past six months that I have been seeing Nacny, she has been very helpful in hepling me lose 31 pounds. She understands very aspect of what I needed and how to accommidate them properly. With Nancy's help I have been able to change my lifestyle, eat healthier and change and treat my medical conditions very differently and for the best. I would highly reccommanded Nancy to anyone that has tried diets before and has not succeded and who has a lot of different medical conditions that make it difficult to know what to eat and what not to eat.
Michael Maino
21:11 17 Dec 22
I was hesitant at first to start seeing a nutritionist. I was very comfortable with my poor eating habits despite being upset about my weight; however I knew I needed to make a change.

Nancy was very understanding from the start. Before meeting with Nancy, I had been in a constant cycle of over-restricting myself to lose weight rapidly, followed by binge eating and gaining it all back plus some more.

Over the past year and a half, Nancy has helped me discover normal eating. She helped me understand my hunger and my fullness in addition to helping me choose better food options.

Nancy is very dedicated to working with you and helping you achieve your goals. She doesn’t just help you reach your goals — she helps you change your perspective of food and eating for the better. What you learn with Nancy is not temporary — you will carry it with you and practice it throughout your life.

I have lost almost 70 pounds since first meeting with Nancy and continuing on my journey. I highly recommend working with her.

Nancy, thank you for all of your help!
Carol Vogt
21:38 12 Dec 22
Although I was unlucky when I developed some health issues, I was very lucky to find Nancy Mazarin, a skilled, intelligent, caring nutritionist. I saw lots of doctors but she was the one who came up with the diagnosis that finally led to my improved health. She was always available when I had questions and was even willing to meet with me one weekend when I was struggling.
Bonnie Eisler
00:22 03 Dec 22
Nancy has been wonderful to work with. She is extremely knowledgeable about nutrition, and very intuitive in identifying and removing roadblocks her clients may be experiencing on their way to achieving their goals. Nancy is extremely organized and promptly keeps her appointments. I highly recommend her!
richard markx
02:55 11 Oct 22
Absolutely knowledgeable compassionate and very personable!
Anyone wishing to improve their health through nutrition and education will find Nancy Mazarin incredibly helpful Thank you for all your help Nancy!
  • Holistic
  • Medical Nutrition Therapy
  • Cardiometabolic
  • Diabetes
  • Cardiovascular / Heart Health
  • Renal / Kidney
  • Liver Disease/Fatty Liver
  • Gastrointestinal /Digestive disorders
  • Irritable Bowel Syndrome
  • Inflammatory Bowel Disease
  • Celiac Disease/Gluten Free Diets
  • SIBO
  • Diarrhea/Constipation
  • GERD
  • FODMAP Diets
  • Elimination Diets
  • Dairy or Lactose free
  • Food Allergy / Sensitivity / Intolerance
  • Anti-Inflammatory Plans
  • Auto Immune Disorders
  • Plant Based / Vegan / Vegetarian
  • Weight Management
  • Weight Loss
  • Weight Gain
  • Disordered Eating / Dysfunctional Eating
  • Binge Eating Disorder
  • Geriatrics/Elderly

© Copyright | All Rights Reserved. | Nancy Mazarin NYS Certified Dietitian Nutritionist (CDN) & Registered Dietitian Nutritionist (RDN) on Long Island, Queens, New York & Online
11 Glenwood Drive Great Neck, NY 11021 United States - 516-466-4279
Works with patients from: Nassau County, Great Neck, Suffolk County, Queens, North Shore, Locust Valley, Port Washington, Glen Cove, Oyster Bay, Cold Spring Harbor, Huntington, Manhasset, Brookville, Syosset, Woodbury, Roslyn, Hicksville, East Hills, Long Island
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