Functional Medicine w/ Leah O’Connor – What Are Peptides? Your Guide to the Benefits of Peptide Therapy

What Are Peptides?

What Are Peptides? Your Guide to the Benefits of Peptide Therapy

If you’re exploring new ways to optimize your health and longevity, you’ve likely come across the term “peptides.” There are a wide range of customized peptide therapies designed to help you feel and function like your best self.

In this post, we’ll break down what peptides are, how they work, and explore several types of peptides commonly used in functional medicine.

What Are Peptides?

Peptides are short chains of amino acids—typically consisting of 2 to 50 amino acids—that act as signaling molecules in the body. Think of them as biological messengers that tell cells what to do. As we age, natural peptide production declines, leading to issues like reduced libido, slower recovery, weight gain, and fatigue. Peptide therapy replenishes these essential messengers to restore balance and function from the inside out.

Peptides can be administered in several forms—including injections, oral tablets, or topical creams—and are often used in place of or alongside hormone replacement therapy (HRT) for a more targeted and regenerative effect.

Popular Peptides in Functional Medicine

Here are a few of the most commonly used peptides and their key benefits:

1. BPC-157: Tissue Repair & Inflammation Reduction

BPC-157 (Body Protection Compound) is a peptide derived from a protein found in gastric juice. It is well-known for its healing and anti-inflammatory properties, and may support:

  • Joint, tendon, and ligament healing
  • Gut health and IBS symptoms
  • Erectile function via improved blood flow
  • Recovery from injuries or surgery

This peptide is ideal for individuals with chronic inflammation or those looking to support regenerative healing naturally.

2. PT-141: Enhancing Libido & Sexual Response

PT-141 (Bremelanotide) is a unique peptide that acts directly on the central nervous system to stimulate sexual arousal and desire. It is effective for both men and women and can be especially beneficial for:

  • Erectile dysfunction (ED)
  • Low libido
  • Sexual arousal disorders

Unlike medications like Viagra or Cialis, which primarily improve blood flow, PT-141 works by activating melanocortin receptors in the brain, enhancing sexual desire and performance without affecting vascular function.

3. CJC-1295 / Ipamorelin

  • Stimulates natural growth hormone production
  • Improves sleep quality, fat metabolism, and lean muscle mass
  • Commonly used for anti-aging and body composition support

4. Sermorelin: Growth Hormone Support & Vitality

Sermorelin is a peptide that stimulates the body’s natural production of human growth hormone (hGH). This can help:

  • Enhance sex drive
  • Increase lean muscle mass
  • Promote fat loss
  • Improve sleep quality
  • Support cellular regeneration

Sermorelin is typically administered through daily subcutaneous injections. If you’re looking for a longer-acting option, CJC-1295 may be a better fit.

5. Semaglutide: Weight Loss & Metabolic Balance

Yes, Semaglutide is a peptide—and it’s become a popular tool in functional weight management. Originally developed for type 2 diabetes, Semaglutide is a GLP-1 receptor agonist that helps:

  • Reduce appetite and cravings
  • Promote fat loss
  • Improve insulin sensitivity
  • Support blood sugar balance

Used as part of a comprehensive weight loss program that includes nutritional guidance and lifestyle support, Semaglutide can help you achieve sustainable results. It’s most effective when paired with healthy eating habits, movement, and medical oversight.

Why Choose Peptide Therapy?

Unlike pharmaceuticals that often target broad systems and come with side effects, peptides offer a more targeted, biologically harmonious approach. Functional medicine practitioners use peptides to treat the root cause of health issues—whether it’s hormone imbalance, inflammation, or aging-related decline.

If you’re struggling with energy, poor recovery, inflammation, or just looking to optimize your health, peptide therapy may be worth exploring. Peptide therapy is typically customized to your unique health goals and lab results, making it a personalized and proactive solution to support optimal wellness. 

Leah O'Connor
Leah O’Connor

Leah Griffin O’Connor –  Wellness Care Strategist 

Leah has deep family roots in the Lake Norman area, fostering a strong connection and commitment to her community. With a longtime interest and passion for functional nutrition and lifestyle, she holds a profound belief in the power of functional medicine.

Outside of work, she enjoys being with her family and friends, spending time on the lake, and traveling. Leah is dedicated to enhancing the patient experience and creating awareness for MediThrive’s solutions to help others unlock their wellness potential.  Leah looks forward to watching MediThrive help others feel their best and thrive

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