Opening early 2027

Never sold · Unsubscribe anytime

Treatments · Long Island, NY

Medical weight loss,
physician led.

At a glance

Medical weight loss is physician-supervised care addressing weight and metabolic contributors while considering nutrition, muscle strength, body composition and appropriate prescription options. Institute of Function starts with medical assessment and the least invasive effective plan, prioritizing nutrition and strength before considering appropriate prescription options. Dr. Benjamin (Ben) Klyachman, D.O., board-certified in pain medicine and physical medicine and rehabilitation, leads care at Institute of Function in Nassau County, NY, which welcomes patients from across Long Island, New York City and beyond.

Weight is a medical question, not a willpower question. Our metabolic care in Nassau County begins with a physician review of your history, labs and body composition, and builds a plan around preserving muscle, protecting energy and supporting long-term metabolic health.

Medically reviewed by Dr. Ben Klyachman, D.O. · Updated October 21, 2026

How we begin

Care starts with a private physician review: your history, prior attempts, current medications and the goals that matter to you. Lab work helps identify thyroid, metabolic and hormonal contributors, and body composition assessment distinguishes fat loss from the muscle loss that often accompanies rapid weight change.

Prescription options, when appropriate

When clinically appropriate, prescription options that support appetite and metabolic regulation may be discussed as one part of a broader plan. Prescribing is never automatic and never guaranteed; it follows evaluation, informed discussion of benefits and risks, and ongoing monitoring.

GLP-1 medications and weight loss injections

GLP-1 medications are prescription medicines that act on appetite, fullness and blood sugar regulation. Semaglutide (Wegovy) and tirzepatide (Zepbound) are weight loss injections that are FDA-approved for chronic weight management in adults with obesity, or with overweight and at least one weight-related condition. They are considered only after a physician assessment, with labs, regular monitoring and a strength-preserving plan. Prescribing is never guaranteed.

Protecting strength and muscle

Weight lost without strength is weight lost poorly. Every plan includes strength training guidance and attention to protein intake so that lean mass is preserved while body composition improves. This is where metabolic care and performance health meet.

Follow-up and monitoring

Progress is reviewed on a regular schedule, with labs, body composition and symptoms guiding adjustments. The plan changes as you do, and the goal is a result you can maintain, not a number you reach briefly.

Common
questions.

This page is general information, not medical advice. Individual results vary. Medical Disclaimer

Correspondence

Hear from us
before we open.

Institute of Function is preparing to open in Nassau County. Leave your email to receive our opening date and appointment availability before they're announced publicly, along with the occasional note from the Journal. We write sparingly.

Your email is never sold · Unsubscribe anytime · Privacy Policy