Kristen Mancinelli

Registered Dietitian Nutritionist

Weight Loss · Metabolic Health · GLP-1 Nutrition

You’re ready to address your weight and metabolic health.
Let’s make sure you have a strategy.

Weight loss & body composition

You want to lose fat, preserve or build muscle, and reach a weight you can maintain.

Metabolic health

You need to improve cholesterol, blood sugar, A1c, triglycerides, or other nutrition-sensitive markers.

GLP-1 nutrition

You're on Ozempic, Wegovy, or another GLP-1 medication and want guidance on nutrition, muscle loss, and what happens when you come off.

Longevity & prevention

You are thinking about how today’s choices affect your health over the next decades.

How I Work

Close work over time, built around your life.

Clients typically work with me through a series of one-on-one consultations over several months.

We begin with a careful assessment of your current health — your metabolic picture, family history, and the broader context shaping your long-term risk.

Many people arrive with partial or conflicting understandings of nutrition. Part of my role is to resolve that — identifying and correcting misconceptions, and translating the science into clear priorities.

We then look closely at behavior — eating patterns, activity, daily habits — and design practical strategies grounded in behavioral science that reshape those patterns so that lasting change doesn't depend on perpetual external accountability.

We also consider your environment: work demands, family dynamics, social context. Sustainable change usually depends on shaping these conditions to support the new norm.

The goal is not indefinite coaching, but a durable shift in understanding and behavior that gives you agency over your health trajectory.

Background

25 years across the full landscape of health.

I started in chemistry at NYU, expecting to become a scientist. Instead, I found that what I cared about most was helping people make sense of complex science and use it to improve their lives. That realization led me to graduate study in nutrition science and public health at Columbia University, and to a career that has spanned clinical nutrition, one-on-one counseling, NIH-funded research, clinician education, patient experience, public health policy, and two published books on weight loss with carbohydrate restriction: The Ketogenic Diet (Ulysses Press, 2015) and Jump Start Ketosis: Intermittent Fasting for Burning Fat and Losing Weight (Ulysses Press, 2018).

My work has spanned both the individual — helping clients lose weight, improve their metabolic health, and develop real agency over their habits — and systems and populations, designing programs and advocating for better health outcomes at scale. This range is what allows me to see the full picture of a client's health — from the biochemistry and physiology underlying their health status, to the behaviors and environment shaping their choices, to the healthcare systems they're navigating.

Years in healthcare

Chemistry

Nutrition Science
& Public Health

Registered Dietitian

Who This Is For

This is for people who are done improvising.

Clients come to me at a moment in their life when they know something needs to change.

Weight was never a problem before, but lately the extra weight isn't coming off so easily and you need to figure out what happens now.

A GLP-1 helped you lose weight, but now you want to protect your diet quality and muscle mass while you’re on it, or have a plan for coming off.

Your A1c, fasting glucose, LDL, or triglycerides came back high, and your doctor gave you a window of time to turn things around before going on medication. You want to make the most of that window.

You wear an Oura ring and a CGM and eat 1g/lb protein and lift heavy and train Zone 2 and it feels like a lot of tactics without a strategy and you’re wondering how you’ll make time for the next 15 things Instagram tells you to do. You’re thinking it might make sense to fit this all into a coherent strategy.

Something significant just happened — you had a child, lost a loved one, or had a big health scare. You’re starting to think about where your health is heading over the next 10, 20, 30 years, and want to make a plan.

Kristen patiently (and succinctly) helped me to navigate my confusion around some core principles of nutrition — in a way that I was able to understand and remember, and which continually help me in my daily decision making.

Amar G, 31

Kristen is thoughtful, inquisitive, and full of candor — which is what pushes you to succeed from the start.

Airri M, 38

Kristen guided me through a year-long journey of creating habits for a healthier lifestyle. 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.

Kiran M, 49