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Water retention in the legs: causes and effective solutions

Restex Recovery
Bien-être
Published 25 Mar 2026 ·Updated 8 May 2026 · 10 min read

You come home from work, you take off your shoes, and your ankles have doubled in size. Your legs are heavy, tight, sometimes even painful. If this sounds familiar, you're not alone — water retention in the legs affects millions of women in the UK, particularly between the ages of 30 and 55. Good news: it's not inevitable. In this article, we'll understand together why this happens, what the real causes are, and above all what practical solutions exist to regain light legs in everyday life — including approaches you can practise at home, without appointments.

What is water retention and why does it affect women more?

Water retention — or swelling — refers to an abnormal accumulation of fluid in the body's tissues, particularly in the lower limbs. Normally, our lymphatic system and our venous circulation ensure constant drainage: interstitial fluid is reabsorbed and sent back towards the heart. When this mechanism doesn't work properly, fluid accumulates, causing swelling, feelings of heaviness and discomfort.

Women are significantly more affected than men, and this is no coincidence. Several physiological factors explain this predisposition:

  • Hormonal fluctuations: variations in oestrogen and progesterone during the menstrual cycle, during pregnancy or at menopause directly influence the permeability of blood vessels. When oestrogen levels increase, vein walls become more permeable, allowing more fluid to escape into the tissues.
  • Venous structure: the veins in the legs must work against gravity to return blood to the heart. The venous valves, those small "gates" that prevent blood from flowing back down, are under considerable pressure — and in women, they can weaken earlier under the effect of hormones.
  • Pregnancy: the weight of the uterus compresses the pelvic veins, slowing venous return from the legs. Water retention is one of the most common symptoms of pregnancy, particularly in the third trimester.
  • Menopause: the drop in hormones leads to a loss of elasticity in vein walls, worsening circulation and retention problems.

It's important to distinguish benign water retention — that which is linked to lifestyle, hormones or diet — from pathological swelling which can signal a heart, kidney or liver problem. If your swelling is sudden, asymmetrical, painful or accompanied by breathlessness, consult your doctor without delay. This article deals with functional water retention, everyday water retention, which can be considerably improved with the right habits.

The main causes of water retention in the legs

To act effectively against water retention, you first need to understand what causes it. Here are the most common causes in active women.

Sedentary lifestyle and prolonged positioning

This is probably the number one cause in our modern lifestyle. Whether you're sitting at a desk eight hours a day or standing in a shop, the static position prevents the calf muscles from playing their role as a "venous pump". These muscles, when they contract whilst walking, compress the veins and propel blood towards the heart. Without movement, blood stagnates, pressure increases in the leg veins, and fluid seeps into the surrounding tissues.

Diet too high in sodium

Salt attracts water. When your diet contains too much sodium — and ready meals, industrial bread and sauces contain far more than you might think — your body retains more water to maintain balance. This excess manifests first in the extremities: feet, ankles, calves.

Hormonal imbalances

Beyond the normal menstrual cycle, certain hormonal treatments (contraception, HRT at menopause) can worsen water retention. Premenstrual syndrome is often accompanied by leg swelling in the days before menstruation — a phenomenon directly linked to progesterone peaks.

Heat

In summer, your veins dilate to encourage the removal of body heat. This vasodilation, whilst useful for thermoregulation, reduces the efficiency of venous return. Result: your legs swell more when it's hot, particularly if you're not very active.

Venous-lymphatic insufficiency

In some women, the venous system and lymphatic system function below their optimal capacity. This isn't necessarily a serious illness, but a constitutional fragility that makes you more vulnerable to water retention. A family history of varicose veins or heavy legs is often an indicator.

Lack of hydration

It seems paradoxical, but drinking too little water worsens retention. When the body is dehydrated, it activates conservation mechanisms: it retains the little water available, including in the leg tissues. Conversely, drinking enough (1.5 to 2 litres per day) helps the body eliminate excess fluid.

Natural solutions to reduce water retention

Before talking about devices or treatments, there are simple changes that can make a real difference. Ideally, combine several of these approaches for a cumulative effect.

Move regularly — even gently

You don't need to run a marathon. Walking, swimming, gentle cycling or even simply climbing stairs activate the calf muscle pump and restart circulation. The goal: never stay in the same position for more than two hours without moving. If you work sitting down, get up every hour to walk for a few minutes. If you work standing up, take sitting breaks and elevate your legs when possible.

Adapt your diet

  • Reduce salt: cook at home as much as possible, limit ready meals, and watch out for bread (a baguette contains around 4 to 5g of salt).
  • Increase potassium: bananas, avocados, spinach, lentils — potassium helps balance sodium and promotes water elimination.
  • Favour draining foods: cucumber, watermelon, asparagus, artichoke, fennel, pineapple. These foods have a natural diuretic effect.
  • Stay hydrated: 1.5 to 2 litres of water per day. Cherry stem, orthosiphon or pilosella teas are traditionally used for their draining effect.

Elevate your legs

Simple but remarkably effective: elevating your legs 15 to 20 centimetres above heart level for 20 minutes encourages venous return by gravity. Do this in the evening when you get home from work, or place a cushion under your feet overnight. This action alone can significantly reduce swelling the next morning.

Manual lymphatic drainage

Performed by a physiotherapist or trained practitioner, manual lymphatic drainage consists of gentle, rhythmic pressures that stimulate lymph circulation. It's a recognised and effective technique — but it has a practical drawback: you need to travel, make an appointment, and each session generally costs around £80 in a clinic. For a chronic problem requiring regular sessions, the cost can quickly become prohibitive.

It was precisely this finding that led to the development of at-home pressotherapy devices, capable of reproducing the principle of lymphatic drainage autonomously. To learn more about lymphatic drainage and its benefits, see our complete guide to lymphatic drainage.

Graduated compression

Compression stockings or socks exert degressive pressure from the ankle to the knee, facilitating venous return. They're particularly useful during long plane journeys or days working standing up. Ask your pharmacist for advice on choosing the right compression class.

At-home pressotherapy: an effective and sustainable solution

If you suffer from regular water retention in your legs, you've probably already considered lymphatic drainage at a specialist centre. The problem is the logistics: finding a slot, getting there, paying £80 per session, repeating every week or fortnight. Over a year, that represents a considerable budget — and above all, it depends on your availability.

At-home pressotherapy offers a practical alternative. The principle is the same as manual drainage: air chambers inflate and deflate sequentially around your legs, creating progressive compression from ankle to thigh. This mechanical action stimulates venous return and lymphatic drainage, helping your body evacuate accumulated fluid.

How do Restex Recovery boots work?

The Restex pressotherapy boots use OptiFlow technology, based on 6 overlapping air chambers — and this technical detail makes all the difference. Unlike entry-level devices whose chambers are separated (leaving "gaps" in compression), overlapping chambers ensure continuous leg coverage, with no dead zones. The result: more fluid, more complete, more comfortable drainage.

Here's what this means practically for your daily life:

  • 6 intelligent pre-configured programmes: you choose the programme suited to your needs (drainage, relaxation, recovery) and the device does the rest.
  • Adjustable pressure from 80 to 260 mmHg: you start gently and gradually increase according to your comfort. For water retention, moderate pressure (100-150 mmHg) is generally recommended.
  • Quiet (less than 40 dB): it's quieter than a quiet conversation. You can use them whilst watching your favourite series, reading, or working on your computer.
  • Wireless and rechargeable: the 5,200 mAh battery offers up to 4h30 of battery life. No trailing cable, no need to be near a socket.
  • CE, ISO and ROHS certified: quality and safety standards that guarantee a reliable and tested device.
  • 2-year warranty: the best warranty in its price category.

The calculation that changes perspective

Restex boots are offered at £589.99. A lymphatic drainage session in a clinic costs on average £80. In other words: the device pays for itself in around 8 sessions. If you had one session per week, that's less than two months to recoup your investment. After that, each use is free — and you can use it as often as you like, whenever you like.

It's this accessibility that makes the difference for women who suffer from chronic water retention: treatment no longer depends on an appointment, a journey or a monthly budget. It's in your home, available at any time.

What users say

With 31 verified reviews and a rating of 4.6/5 stars, user feedback confirms the effectiveness experienced. What comes up most often: the feeling of immediate lightness after a 30 to 45 minute session, the visible reduction in swelling, and the comfort of use at home. Notable fact: the return rate is 0% on our online shop — customers who take the time to research before buying are fully satisfied with their investment.

→ Discover Restex Recovery boots

How to choose your pressotherapy device

If you're considering investing in an at-home pressotherapy device, several criteria deserve your attention. The market offers devices ranging from £150 to over £2,500, and the difference in quality is real.

Essential criteria

  • The number and type of air chambers: the more chambers there are, the more progressive and precise the massage. But beyond the number, check whether the chambers overlap or not. Overlapping chambers (like Restex's 6 OptiFlow chambers) offer drainage without interruption, whilst separate chambers create uncompressed zones between each section.
  • Pressure range: a good device must offer sufficient amplitude to adapt to different needs. A range of 80 to 260 mmHg covers both gentle drainage (water retention, heavy legs) and more intense sports recovery.
  • Certifications: CE and ISO standards are not optional for a medical device. They guarantee that the product has been tested according to European safety standards. The ROHS standard guarantees the absence of hazardous substances.
  • Battery life: if the device is wired, you're limited to a location near a socket. A battery-powered device offers freedom of use in any room, in any position.
  • Warranty: a direct indicator of the manufacturer's confidence in their product. A 2-year warranty is an excellent signal.
  • Noise: if you plan to use the device in the evening whilst relaxing, noise level matters. Below 40 dB, the device is virtually inaudible.

For a detailed comparison of the different options available and to help you make the right choice, we've written a complete guide: pressotherapy boots at home or in a centre, how to choose?

Why avoid entry-level devices

Devices under £200 generally use 3 or 4 non-overlapping chambers, less durable materials, and offer limited pressure ranges. Above all, they often lack medical certifications — which poses a real safety problem for a device that exerts pressure on your limbs. Drainage is less uniform, comfort lower, and lifespan shorter. In the long term, a mid-range quality device like Restex (£589.99) works out cheaper than an entry-level device replaced every year.

Frequently asked questions

Is pressotherapy effective against water retention?

Yes. Pressotherapy acts directly on the two mechanisms involved in water retention: venous return and lymphatic drainage. By exerting sequential compression from ankle to thigh, it helps the body reabsorb and evacuate fluid accumulated in the tissues. Many users notice a visible reduction in swelling from the first session. For lasting results, regular use (3 to 5 sessions per week) is recommended.

How long do you need to use the boots to see results?

Most users feel an immediate sensation of lightness after a 20 to 30 minute session. For visible and lasting results on chronic swelling, allow one to two weeks of regular use (one session per day or every other day). Each session can last from 10 to 90 minutes depending on the programme chosen and your comfort.

Are there any contraindications to pressotherapy?

Like any compression device, pressotherapy is not recommended in certain cases: ongoing deep vein thrombosis, skin infections on the treated area, uncontrolled heart failure, and certain dermatological conditions. If in doubt, consult your doctor before starting. For functional water retention (linked to lifestyle, hormones or diet), pressotherapy is generally very well tolerated.

Can I use pressotherapy boots during pregnancy?

Water retention is very common during pregnancy, especially in the third trimester. However, the use of pressotherapy during pregnancy must absolutely be validated by your doctor or midwife. Every pregnancy is different, and only a healthcare professional can assess whether pressotherapy is suitable for your situation.

What's the difference between at-home and clinic pressotherapy?

The principle is identical: sequential compression of the legs to stimulate drainage. In a clinic, the practitioner can manually adjust the treatment and combine it with other techniques. At home, the advantage is frequency of use (every day if necessary) and the absence of logistical constraints. Financially, a device at £589.99 pays for itself in 8 clinic sessions (at around £80 per session). Over a year of regular use, the saving is considerable.

Regain light legs — at home, at your own pace

Water retention in the legs isn't something you simply have to "live with". Between dietary adjustments, adapted physical activity and at-home drainage solutions, you have practical tools to regain everyday comfort.

If you're looking for a sustainable, practical and economical solution, the Restex Recovery pressotherapy boots are designed exactly for this: to offer you the benefits of professional lymphatic drainage, at home, when you need it — without appointments, without travel, without subscription.

6 overlapping chambers · 6 programmes · CE/ISO/ROHS certified · 2-year warranty · £589.99

→ Discover Restex Recovery boots and regain the lightness of your legs

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Restex Recovery

Restex Recovery · Bien-être

L'équipe Restex Recovery rassemble des spécialistes de la récupération sportive, du drainage lymphatique et du bien-être des jambes. Tous nos contenus sont relus par des praticiens et mis à jour régulièrement à partir des dernières études en physiologie du sport.

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