Why Manual Lymphatic Drainage doesn’t need to hurt to have a purpose

“Is that it?”

I suspect that thought has crossed more than one person’s mind during their first experience of Manual Lymphatic Drainage.

Because MLD is light.

Really light.

If your idea of an effective treatment involves elbows, deep pressure, kneading muscles and occasionally gritting your teeth, it can seem almost suspiciously gentle.

And yet underneath my hands sits an extraordinary transport system made up of vessels, nodes, fluid, cells and some rather clever microscopic structures.

So naturally…

Down the rabbit hole we go. 🐇

First, meet your lymphatic system

Most of us don’t give our lymphatic system much thought until something goes wrong with it.

But it’s working all the time.

Fluid continually moves out of our blood capillaries into the tissues around our cells. Most is reabsorbed into the circulation, while the lymphatic system collects the remaining fluid along with proteins and other substances and eventually returns it to the bloodstream.

At the very beginning of that journey are tiny vessels called initial lymphatics — or lymphatic capillaries.

And this is where things get rather clever.

So am I actually pulling open little lymphatic doors?

This is where my evidence hat goes firmly back on.

It’s very tempting to explain MLD like this:

I stretch the skin → anchoring filaments pull → the little flaps open → fluid rushes into the lymphatic vessel.

It’s wonderfully easy to visualise.

And there is genuine anatomy underneath that explanation.

Initial lymphatics do have overlapping endothelial cells, specialised button-like junctions and anchoring filaments connecting them to the surrounding extracellular matrix. Pressure differences between the tissue and lymphatic lumen are important in fluid entry.

But living tissue isn’t a simple mechanical trapdoor.

Reviews of lymphatic physiology point out that while anchoring filaments are thought to help prevent lymphatic capillaries collapsing and may influence fluid entry as tissue pressure changes, some of the precise functional mechanisms remain less directly demonstrated than our lovely textbook diagrams sometimes imply.

So:

🟢 WHAT WE KNOW

Initial lymphatics are designed to collect fluid from the tissues.

Their structure is different from blood capillaries.

Pressure gradients, tissue movement and the mechanical environment around lymphatic vessels matter.

🟠 WHERE I’D BE CAUTIOUS

Saying:

“My fingers pull the anchoring filaments and open the lymphatic flaps.”

That’s a much bigger mechanistic claim.

It’s a useful model for understanding the anatomy.

It shouldn’t become a magic explanation.

Promising physiology doesn’t give us permission to oversimplify it.

But surely more pressure would move more fluid?

Not necessarily.

This is one of the things people often find surprising about MLD.

We have become rather accustomed to equating:

harder = more effective.

Deep massage has its place.

Soft-tissue work has its place.

Structural work has its place.

But Manual Lymphatic Drainage is doing something different.

The initial lymphatics we’re interested in are superficial structures. We’re not trying to squash our way down through the tissues to reach them.

And more pressure doesn’t automatically equal more lymphatic effect.

Sometimes it simply means more pressure.

I’m not trying to force fluid through your body like toothpaste through a tube.

MLD uses gentle, rhythmic movements of the skin and tissues, working with lymphatic anatomy and drainage pathways rather than trying to physically push fluid from one end of the body to the other.

Gentle isn’t the absence of treatment.

Sometimes gentle is the treatment.

Where does the fluid actually go?

Another lovely rabbit hole.

Once fluid enters the initial lymphatics, it moves into progressively larger lymphatic vessels.

These collecting vessels contain valves, helping direct lymph in one direction.

Lymph passes through lymph nodes and eventually through larger lymphatic trunks and ducts before returning to the bloodstream.

And importantly, lymph isn’t moved by one single pump equivalent to the heart.

The system uses several mechanisms.

Larger lymphatic vessels contain smooth muscle and can contract rhythmically themselves.

But external forces matter too.

Muscle activity.

Movement.

Breathing.

Changes in pressure within the chest and abdomen.

Movement of surrounding tissues.

All contribute to lymph transport.

Which leads to a question I rather like…

“Couldn’t I just go for a walk?”

Yes.

😆

Actually, please do.

Walking is wonderful.

Muscle contractions and body movement alter tissue pressures and can assist lymph movement.

Breathing creates pressure changes through the chest and abdomen.

Your body is designed to move.

So if your lymphatic system is healthy, I am absolutely not going to tell you that you need somebody manually draining you every week to keep your lymphatic system functioning.

A healthy lymphatic system is already working 24 hours a day without booking an appointment with me.

But there’s a difference between needing something and choosing something.

Someone with a healthy lymphatic system might choose a gentle lymphatic treatment because they enjoy the experience.

Perhaps they’ve travelled and feel temporarily puffy.

Perhaps they’ve spent hours sitting.

Perhaps hot weather leaves them feeling heavy.

Perhaps they love very gentle touch.

Perhaps they find it incredibly relaxing.

Or perhaps they simply want 60 or 90 minutes in which they don’t have to do anything.

That’s allowed too.

We sometimes seem to feel that every treatment has to correct a dysfunction before we’re allowed to enjoy it.

I’m not sure it does.

And then there’s the nervous system…

This is another area where things get interesting.

People often tell me that MLD makes them feel deeply relaxed.

Some fall asleep.

Some say they feel calmer afterwards.

And inevitably that leads to claims online that MLD:

“activates the parasympathetic nervous system”

or

“resets your nervous system.”

I’d be careful with that language.

There have been small studies looking at autonomic responses following lymphatic drainage techniques in healthy people.

One randomised controlled trial involving 66 healthy adults compared 45 minutes of lymphatic drainage therapy with resting. Researchers found a change in one neurological measure — the H-reflex — but did not find significant differences in heart-rate variability or salivary alpha-amylase.

An earlier small study involving 32 healthy men did report changes in heart-rate variability that the researchers interpreted as reduced sympathetic activity after MLD.

Interesting?

Absolutely.

Enough evidence for me to tell you I’m going to “reset your nervous system”?

No.

🟠 Promising ≠ proven.

What I can tell you is that many people find slow, gentle, rhythmic treatment relaxing.

And if you fall asleep on my couch, I’m unlikely to be offended. 😴

What about swelling, surgery and lymphoedema?

Now we’re moving into a different territory.

There are situations where Manual Lymphatic Drainage is used as part of clinical lymphatic management, including lymphoedema.

And here the assessment matters.

The person’s medical history matters.

The reason for the swelling matters.

The lymphatic pathways matter.

Skin matters.

Surgery matters.

Cancer treatment matters.

And MLD may be only one part of the picture.

Management of lymphoedema can also involve compression, exercise/movement, skin care, education and self-management depending on the individual.

So what does the research say about MLD itself?

A 2021 systematic review examined 17 studies of MLD for lymphoedema, predominantly breast-cancer-related lymphoedema.

The results were mixed.

Some studies reported improvements in limb volume, symptoms or quality of life.

Others found that adding MLD didn’t provide a significant additional benefit.

The authors suggested there may be particular potential in earlier or milder lymphoedema, but the evidence was not strong enough to draw firm conclusions across different stages and situations.

And that distinction is important.

MLD isn’t magic.

But that doesn’t mean it has no place.

It means we assess.

We individualise.

We combine tools where appropriate.

And we don’t promise things the evidence can’t support.

Clinical MLD and a lovely lymphatic treatment aren’t necessarily the same thing

This is another distinction I want people to understand.

Someone may come to me because they have diagnosed lymphoedema or persistent swelling following surgery.

That requires clinical thinking.

I want to understand why the swelling is there.

Where is it?

When did it start?

What’s the medical history?

Has the lymphatic system been affected by surgery or radiotherapy?

What’s happening with the skin?

Are there any red flags?

Does this person need compression?

Do they need another healthcare professional involved?

That is very different from somebody saying:

“I’ve had a ridiculously busy month, I feel a bit puffy and I’d really like a gentle full-body treatment.”

Both may involve lymphatic techniques.

But the purpose, assessment and treatment plan are different.

And I think being clear about that protects both the client and the therapy.

And no, you don’t need to “detox”

We couldn’t possibly write about lymphatics without opening this particular can of worms. 😆

The lymphatic system absolutely is involved in transporting fluid, proteins, immune cells and other substances around the body.

It is a fascinating and essential part of fluid balance and immune function.

But that does not mean a lymphatic massage is squeezing mysterious unnamed “toxins” out of your tissues.

So… does MLD actually do anything?

This is probably where I land.

The lymphatic system is real.

The anatomy is fascinating.

Fluid movement through tissues is real.

The specialised structure of lymphatic vessels is real.

Movement, muscle activity, breathing, tissue pressure and intrinsic lymphatic contractions all contribute to lymph transport.

MLD is used clinically as one component of lymphoedema management, although research into its additional effects remains mixed and depends on the population and outcome being studied.

And people with healthy lymphatic systems don’t need regular MLD to keep their lymph flowing.

But they may still choose it.

For relaxation.

For gentle touch.

For a temporary feeling of puffiness or heaviness.

For some time out.

Or simply because it feels lovely.

I don’t need to turn MLD into a detox, an immune-system boost or a miracle treatment to make it worthwhile.

Actually, I think understanding what the lymphatic system really does makes it far more interesting.

Light doesn’t mean insignificant.

Perhaps that’s the biggest thing I want people to take away from this.

Treatment doesn’t always have to hurt.

More pressure isn’t automatically better.

And sometimes working with the body requires rather less force than we imagine.

So whether I’m using Manual Lymphatic Drainage as part of a clinical treatment plan or you’re simply having a gentle lymphatic treatment because you’d quite like one:

Move the skin.

Move yourself.

Work with the system.

And let your rather extraordinary physiology do what it does best.

And perhaps this is also why I chose to train in Vodder Manual Lymphatic Drainage, completing the full training as a Lymphoedema and Post-Surgical Specialist.

I wanted to understand the clinical reasoning behind the technique — not simply learn a sequence of movements.

Because something interesting happens when a therapy that has a clinical history suddenly becomes fashionable. The treatment may not have changed, but the claims around it can.

MLD is currently having something of a moment. You’ll see lymphatic massage linked with detoxing, sculpting, immunity, weight loss and all sorts of promises that can race rather a long way ahead of the evidence.

I don’t think MLD needs any of that.

The real lymphatic system is fascinating enough.
The real clinical applications are important enough.
And sometimes a beautifully gentle treatment is simply lovely enough.

That’s more than enough reason for me to keep learning, keep questioning — and keep my feet firmly on the evidence while my head occasionally disappears down another rabbit hole. 🐇

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🐇 Fi’s Rabbit-Hole Reading

Scallan JP et al. — Lymphatic Vessel Network Structure and Physiology.
A useful dive into the structure of initial lymphatics, including their thin endothelial walls, button-like junctions and anchoring filaments. The authors also highlight that some of the commonly described functions of anchoring filaments still need further functional investigation.

Fi thought: This is a lovely example of anatomy being real while our neat explanation of exactly what it is doing may be a little too neat.

Gashev AA & Zawieja DC — Contractile Physiology of Lymphatics.
A deeper look at how lymph is transported, including intrinsic lymphatic contraction and external influences such as skeletal-muscle activity and respiratory movement.

Fi thought: The lymphatic system isn’t simply a set of passive pipes waiting for my hands to move the fluid.

Effects of lymphatic drainage therapy on autonomic nervous system responses in healthy subjects — randomised controlled trial.
Sixty-six healthy adults received lymphatic drainage therapy or rest. One neurological measure changed, while heart-rate variability and salivary alpha-amylase did not differ significantly between groups.

Fi thought: Interesting enough to keep asking questions. Not enough to tell everyone I’ve reset their nervous system.

Kim et al. — Effects of Manual Lymph Drainage on Cardiac Autonomic Tone in Healthy Subjects.
A small earlier study involving 32 healthy men reported heart-rate variability changes interpreted as reduced sympathetic activity following MLD.

Fi thought: Another interesting piece of the puzzle — but small studies should make us curious, not overconfident.

Thompson et al. (2021) — Manual lymphatic drainage treatment for lymphedema: a systematic review of the literature.
Seventeen studies involving mainly women with breast-cancer-related lymphoedema were included. Results were conflicting: some studies reported improvements while others found no additional benefit from MLD.

Fi thought: This is why “Does MLD work?” is probably too simple a question. For whom? At what stage? Alongside what else? And what outcome are we actually measuring?