
14/09/2025
“The Lymphatic System vs. Swelling: What’s Really Happening?”
Understanding Oedema, Inflammation, and Lymphatic Drainage
Written by Bianca Botha, CLT, RLD, MLDT.
Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before making changes to your diet, exercise, or health regimen.
Swelling (also called oedema) is more than just an aesthetic concern — it’s your body crying out for help. Whether it’s puffiness in your legs, arms, face or abdomen, the root cause often lies within your lymphatic system.
Let’s break down what’s really going on underneath the skin…
What Causes Swelling?
Swelling happens when interstitial fluid (the fluid between cells) accumulates in the tissues. This can occur due to:
• Poor lymphatic drainage (aka lymphatic congestion)
• Increased capillary permeability during inflammation
• Venous insufficiency
• Post-surgical or post-trauma tissue response
• Protein-rich fluid build-up in lymphedema
The lymphatic system’s job is to collect and transport this fluid — called lymph — back into the bloodstream. When it slows down or gets blocked, fluid stays behind and swelling happens.
Types of Swelling You Might See
1. Pitting oedema: Press a finger into the swollen area and a dent stays. Common in fluid retention and heart or kidney issues.
2. Non-pitting oedema: The tissue feels firm or rubbery. Often seen in lymphoedema, where lymphatic damage or overload occurs.
3. Inflammatory swelling: Accompanied by heat, redness, and tenderness due to immune response (think sprains or infections).
How the Lymphatic System Responds
The lymphatic system includes lymph vessels, lymph nodes, and lymphoid organs like the spleen and thymus. Its primary functions are:
• Maintaining fluid balance in tissues
• Transporting immune cells
• Filtering pathogens and debris
• Absorbing fats from the digestive system (via lacteals in the small intestine)
When fluid builds up, manual lymphatic drainage (MLD) can help stimulate lymphangiomotoricity (the contraction of lymph vessels), pushing fluid toward larger ducts like the thoracic duct or right lymphatic duct, which return it to the venous system.
Why Is It Important to Treat Chronic Swelling?
Leaving chronic swelling untreated can lead to:
• Tissue fibrosis (thickened, hardened tissues)
• Immune dysfunction
• Pain and mobility issues
• Secondary infections like cellulitis
What You Can Do to Support Your Lymph Flow:
• Hydrate adequately (yes, more water = better lymph!)
• Practice deep diaphragmatic breathing
• Dry brushing and rebounding
• Receive regular lymphatic drainage therapy
• Reduce inflammatory foods and manage gut health
Swelling is not a surface issue — it’s a lymphatic cry for help!
Understanding the physiology behind puffiness empowers you to support your body’s drainage system and move toward healing.
Let your lymph flow free — your health depends on it!
Let’s drain it right, Lymphies!
Stay hydrated, stay moving, and stay informed!
Your lymph is your life force!
🫀💧🌿✨