human-microbiome
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How the Gut Microbiome Impacts Overall Health, Long Island Dietitian

Understand how the gut microbiome impacts overall health from a Long Island dietitian. Identify symptoms of an unhealthy gut microbiome and dysbiosis. Improve wellness and reset your gut microbiome with medical nutrition therapy. New York…
Fatty Liver Disease
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The Link Between Endocrine-Disrupting Chemicals and Fatty Liver Disease

Improve Liver Health with Tips from a Long Island RDN  There is a growing epidemic of fatty liver disease that is paralleling the increase in obesity and diabetes mellitus in countries that consume a Western diet.   Since fatty liver…
Nonalcoholic Fatty Liver Disease (NAFLD) illustration
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Nutrition Tips to Prevent, Manage, and Reverse Fatty Liver Disease from a Long Island Dietitian

MASLD (metabolic dysfunction-associated steatotic liver disease) previously known as NAFLD (nonalcoholic fatty liver disease), is now recognized as the most common liver disease worldwide, affecting approximately 25% of the global population.…
Be Healthy in 2025
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New Year’s Nutrition Resolutions from a Long Island Dietitian

New Year’s Nutrition Resolutions from a Long Island Dietitian Dietary Interventions and Eating Behaviors for Sustainable Change Though a New Year’s resolution signifies a new start, many people fixate on unrealistic goals that are…
Healthy Holiday Eating
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Healthy Holiday Eating Tips from a New York Dietitian: Manage Your Health and Waistline

You can celebrate the holidays without leaving healthy eating behind. Enjoy the food and festivities. Most foods, even special holidays “treats”, can be part of a healthy eating plan. The key is moderation and mindfulness. Long Island…
Vector dementia infographic in outline style.
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DEMENTIA PREVENTION SHOULD START AT MIDLIFE. The time to start is in your 40’s. 

The link between brain health and nutrition is irrefutable. As a Long Island dietitian, I have spent my career working to help patients improve their wellness through individualized dietary interventions, and this includes providing evidence-based…
Vitamins pill, organic vegetables and fruit, illustration
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What is Food as Medicine?

Food as Medicine is based upon the recognition that food and diet play important roles in disease prevention and management. The fact that diet can impact an individual’s health is now well documented and accepted by healthcare providers…
healthy eating during holidays
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8 Healthy Eating Tips for the Holidays – Maintain a Healthy Weight, Feel Energized, Keep Your Immune System Strong

Though the holiday season has started, there’s no need to leave your healthy eating behind. Celebrate the season with family, friends, and tasty food. Reduce your chances of gaining those holiday pounds. Set realistic expectations, aim for…
Food expiration dates
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Food Expiration Dates: What they really mean explained by a Long Island Dietitian

Although we call them expiration dates, most don’t actually claim anything is expiring or unsafe. Instead, the labels say fresh until, display until, best when used by, better if used by, sell by, best by, enjoy by, best before, or—perhaps…
eating healthy at home
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How to Eat Healthy Food Every Day Simple Tips for Healthy Eating from a Long Island RDN

I am often asked how to eat healthy.  It is not difficult - and my reply is one sentence long: Eat Real Food, Not too much, Mostly plants Of course, this is an oversimplification, and not for everyone, but it makes the point There…
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!
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