Kristen Mancinelli

Registered Dietitian Nutritionist

Weight loss and body composition

Nutrition strategy for fat loss, muscle growth, and bone density.

Metabolic health

Diet-based intervention for prediabetes, insulin resistance and blood sugar regulation.

GLP-1 support

Nutrition to optimize body composition and diet quality while on a GLP-1, or maintain results coming off one.

Kristen Mancinelli

Registered Dietitian Nutritionist

Weight loss and body composition

Nutrition strategy for fat loss, muscle growth, and bone density.

Who this is for

Clients come to me when their health becomes a priority. Here are some common reasons.

A concerning lab result or new diagnosis.

You have an elevated A1c, triglycerides, or an abnormal lipid test (e.g., LDL, HDL); or a new diagnosis (e.g., prediabetes, PCOS, metabolic syndrome), and you want to improve things before medication becomes necessary.

Signs of insulin resistance.

You want to improve insulin sensitivity and glucose control through diet and training.

Midlife shifts in body composition or metabolic health.

You're noticing changes in energy, weight, or how your body responds to food, and you want to change the trajectory rather than accept gradual decline.

Using a GLP-1 medication.

You want to preserve muscle mass and bone density, support your metabolism, and ensure the weight you're losing is primarily fat.

Coming off a GLP-1 medication.

You've had significant changes in your body weight, and you want a strategy to maintain your results.

Bio

Kristen Mancinelli is a registered dietitian specializing in fat loss and metabolic health, including for clients using GLP-1 medications. She works with clients to improve fat-to-muscle ratio, insulin sensitivity, and glucose control while protecting metabolic rate.

She holds a BS in Chemistry from NYU and an MS in Nutrition and Public Health from Columbia University. Her background spans NIH-funded research, clinician education, patient advocacy, and food policy. This informs how she works: at the level of physiology, behavior, and the healthcare environment clients are navigating.

She is the author of two books on the ketogenic diet and intermittent fasting, focused on the biology of hunger, satiety, and insulin regulation and how to translate it into daily eating and weight management. In practice, she helps clients build durable control over their body composition and metabolic markers, so they can maintain results independently over the long term.

Years in science
& healthcare

Chemistry

Nutrition &
Public Health

Registered Dietitian

Books

Ulysses Press, 2015

The ketogenic diet works by restricting carbohydrates to the point where insulin stays low and the body shifts from using glucose to burning fat instead. Appetite drops and food noise quiets. Metabolic markers and symptoms associated with insulin resistance improve. Keto isn't for everyone, but it's an incredible tool in the right circumstances.

Ulysses Press, 2018

Intermittent fasting is a very effective way to reduce caloric intake and give the body a break from the constant stream of insulin that comes with eating throughout the day. The benefits to cardiometabolic health are significant. Diet quality and resistance training are priorities for anyone seeking good health, including people practicing intermittent fasting or those eating less while on a GLP-1.

Testimonials

Kristen guided me through a year-long journey of creating habits to support my weight loss and lower my A1c. Her insights and guidance made the process both comfortable and challenging — and led me to not only achieve my health goals, but also to a lot of personal growth.

Keith M, 42

Kristen helped me eat better, and ultimately feel better, when I didn’t have much interest in eating and had pain when I did. She has consistently offered me simple and effective advice to support my daily routine, and she always has a solution when I feel like something is off balance. This has made all the difference.

Chris G, 49

When I began seeing Kristen, my control of my diabetes was erratic and certainly uninformed. Kristen took the time to explain how my eating habits, my exercising and my hunger were all inter-related, and I have been very successful in keeping my glucose in check, as well as becoming stronger, and a better cook too!

Stephanie L, 61

Let's talk about where you are.

A candid conversation to understand your situation, your goals, and whether working together makes sense.

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