About Us


An intellectual and purposeful approach to wellness and weight loss

Most wellness and weight loss programs are “one size fits all”, but our weight loss system offers completely individualized  programs.  We generate a “road map” that includes a food plan, client support and supplements to address nutritional deficiencies. This is the foundation for creating a detailed and unique program for YOUR overall health and well-being.

Why is it so easy to gain weight and so difficult to lose weight?

Understanding why your body metabolizes the way that it does is a key component to our innovative weight loss program. Hormones and other chemicals in food combined with other environmental variables contribute to weight gain and loss. We’ll teach you to understand your body’s physiological response and to make decisions that help you achieve your goals.

Support and guidance throughout your weight loss journey.

To ensure you are achieving your desired results on the program, we help you monitor your daily and weekly weight loss.  You will text your weight each day to our office, and come in once a week for an updated BCA (Body Composition Analysis) to check your water%, fat%, fat mass, bmi, metabolic age and visceral fat rating.  Your body will change rapidly during the program, and your BCA is critical to making modifications to your program as needed.

You are not alone.

Any journey is made easier with help, and we provide an unparalleled level of support on your path to lasting weight loss. Our team approach to your weight loss and wellness supports you every step of the way.

There are many benefits to achieving a healthy weight.


Losing weight is one of the most important and effective ways to enjoy better overall health.

Learn how shedding the extra pounds can reduce pain by decreasing stress on joint structures.

Our proven weight loss programs help increase your energy and vitality.

The heavier you are, the harder your cardiovascular system is forced to work.

Being overweight can affect more than just your days,  so lose that extra weight and get a better night’s sleep.

Achieving a more fit, healthy body can have both immediate and long-lasting stress reduction effects.



Dr. David Rendelstein – Owner

I started Thintech Weight Loss and Nutrition in 2013 with the purpose of delivering the Nutrimost weight loss system.  In truth, I never expected to own a weight loss company.  I received my chiropractic degree in 2004 and had practiced as a chiropractor exclusively.  I was, however, a morbidly obese chiropractor who, like most of our clientele, tried many unsuccessful ways to lose weight.
In or around 2011, I attended a chiropractic seminar in Manhattan.  Several of the doctors there were noticeably leaner than they had been in the past and one of them, Dr. Siegel, was unrecognizable.  Dr. Siegel and I had attended chiropractic school together and, at that time, I was very lean and he was obese.  This time the roles had reversed!
Dr. Siegel and the others had been doing what would later be called the Nutrimost Ultimate Fat Loss System.  This system would soon be licensed to chiropractic offices, including the office where I worked.
I began the program and lost 60 lbs. in about 4 months.
Some months later, I parted ways with that practice and became a Nutrimost licensee I operated solo out of a one room office in Cranford.
In 2015, I moved into the office on Centennial avenue.  By this point, we had become a Nutrimost Franchise and, in accordance with franchise rules. promoted “Nutrimost” and not, “Thintech”.
In 2017, I took over the offices of a retiring Nutrimost Doctor one in Marlboro and one in Toms River.  In addition to office space and equipment, I inherited Jennifer Parese.  She is our lead Coach and the head of the Technical Services Division.
2019 saw a reorganization of both the franchise and Thintech.  We went back to operating under a license agreement.   This means we purchase the right to use the Nutrimost system but are free to operate as we see fit and no longer subject to the rules of the franchise.  This allows us to build and promote our own brand and purchase products from other distributors.   We took immediate advantage of this by bringing on the Neora line of skin care products.
My name is Corinne Pagliuca, I am the Communications Secretary for Thin Tech Wellness and Weight loss.  My main responsibility is to support the team and ensure we have an ethical and productive company.  I ensure everything is running smoothly behind the scenes.   I have worked for Thin Tech since October of 2019.
I got my degree in Business Management at Ramapo College.  Upon entering the workforce, I worked for Big Pharma companies doing compliance for pharmaceutical samples.  My husband and I decided I would take a break from the workforce once I had my children.  I have two children Brianna (12) and Marissa (6).  Once I entered the workforce again, ThinTech has been the best decision yet.  Not only did I go back to work but working here has allowed me to start the process of getting healthy!  I have done the program and lost 30 lbs.!

Corinne Pagliuca – Communications Secretary

Jennifer Parese- Silvestro – Production Secretary

Hi, I’m Jennifer Parese-Silvestro. Fun factoids about me: I live in Central NJ with my husband, three out of my four kids (one has flown the nest and lives in Queens, NY, working as an attorney at an environmental law firm), my mom, two dogs, one cat, two birds, two rabbits, and a few tanks of fish. I love music, reading, and learning about people. Lots of life and love and energy here!

Living by the motto “question everything” has served me well: always questioning, always learning, always looking to find the root cause of issues, and believing that fostering a healthy relationship with REAL food can be a powerful healing modality.

Nearly five years ago I turned to ThinTech to help break the nearly unbreakable bond that being overweight for ten years had on my life; I shed 52 pounds and rediscovered my true sense of self in the process.

That reaffirmation gave me the push I needed to enroll in school and embrace my calling as a Certified Integrative Nutrition Health Coach.

This certification is in addition to a B.A. in English Literature with a minor in Communications, and twenty-five years of practical experience in holistic living using homeopathy, natural supplements, essential oils, and cleaning eating to help my family and others support their bodies for optimal health conditions. I also successfully built and maintained two other businesses while raising my children and caretaking for the family pets.

While enrolled at the Institute for Integrative Nutrition, my path once again led me back to ThinTech where I got hired and now work in a fulfilling career where I now coach others so they, too, can claim the life they so richly deserve.

I’m thrilled and honored to be here with all of you. Together we CAN and WILL change the world – one Happy, Healthy, Hopeful person at a time!

My name is Dana Marchetta, I am the Director of Promotion and Marketing at Thin Tech Wellness and Weight loss. I am personally responsible for reaching out to prospective clients and supplying them with knowledge of the program. I enjoy speaking to everyone and hearing about many weight loss journey experiences.
I attended Staten Island College in which I obtained a bachelor’s degree in business management and a minor in accounting. I have many years of experience dealing with clients. I am a true “people person”. My husband and I settled in Old Bridge, NJ almost 12 years ago. I have three children Joe (13), Ava (11) and Nicky (7). Joining the team at Thin Tech Wellness and Weight loss has been one of the best choices I have made! My coworkers are amazing people who have so much to offer in which I have grown to call my friends!

Dana Marchetta – Director of Promotion and Marketing

Tricia DiPietro – New Section Officer

My name is Tricia Di Pietro, and I am The Front Desk for ThinTech Wellness and Weight Loss. I am the smiling face here to make sure the clients are receiving the services needed to live a happier, healthier lifestyle! From appointment scheduling to putting clients’ programs together, I am here for the clients every step of the way! My goal is to make sure every client is happy and well supported on their journey to health.
As a professional hairstylist for 18 years, I left the industry in 2017 to raise and take care of my now 13-year-old twins, Ava, and Thomas. Looking to get back into the workforce in 2021, an opportunity opened up for me to join the team at ThinTech and I couldn’t be more happy! I am back in my element, yes, a different setting but I am back to making people happy, building relationships with the clients, and helping them on their journey to health! Not only did I go back to work but working here has helped me find my zest for life again. I recently completed the program and I have lost 35lbs. I feel fantastic! Working here has been one of my best decisions yet, meeting new people and watching them transform their lives is nothing short of amazing!
Hello, my name is Thea Malfetti.
I am a passionate and high-achieving Certified Holistic Health Practitioner and Coach for ThinTech Wellness and Weight Loss.
I am a trusted advisor with extensive experience optimizing client health outcomes.
Registered and certified yoga Instructor with Yoga Alliance.
Usui Reiki Master and an Aromatherapist with a relentless pursuit to resolve client health concerns with a proven ability to utilize my knowledge of natural health, spiritual well-being, and nutrition to boost the quality of life for all my clients.
My approach is based in compassion, and work in knowing the body has an innate ability for self-healing. I help to uncover and empower CLIENTS with the tools for restoring your natural state of vibrant health and happiness.
“Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do” ~Steve Jobs

Thea Malfetti – Coach