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Last reviewed: July 2026
Not sure if it’s fat or water weight causing the bloating and tight jeans? Take our quick 5-question test to find out – plus natural ways to ease water retention fast.
Water retention builds up within hours or days and eases once you cut salt, rest, or take a diuretic – it settles mainly around the stomach, ankles, and fingers, and leaves a dent when you press the skin. Fat gain happens gradually over weeks from a calorie surplus, and the skin springs back when pressed. The five questions below help you tell which one you’re dealing with.
Here’s how the two compare at a glance – then a five-question test below to help you pinpoint which one applies to you:
| Signal | Water retention | Body fat |
|---|---|---|
| Speed of onset | Appears within hours to a couple of days | Builds gradually over weeks or months |
| Skin/finger-press test | Skin stays dented (pitting) when you press it | Skin springs back quickly |
| Typical location | Stomach, ankles, fingers, and face – often shifts through the day | Follows your body’s usual fat pattern; doesn’t change day to day |
| Diet link | Linked to salt/sodium intake, dehydration, or a recent change in diet | Linked to a sustained calorie surplus over time |
| How long it takes to resolve | Usually eases within a few days of cutting salt, resting, or taking a diuretic | Takes weeks of sustained calorie deficit and activity to reduce |
Answer these five questions to find out
- How quickly has the weight appeared? If your weight has increased within a day or two, it’s unlikely that it’s fat. Weight gain caused by fat happens gradually when you consume more calories than you burn off. If the weight is mostly around your tummy, ankles and fingers, the chances are, it’s down to water retention.
- Does your skin snap back quickly? If you push on your skin with your finger or thumb and your skin remains depressed, you’re probably experiencing water retention. Fat cells are more springy, so the skin will bounce back.
- Do you feel bloated after eating? If you only feel heavy and bloated after eating a meal, it’s possible that it’s due to the quantity or type of food you’ve eaten. If this is becoming more frequent, you may wish to ask your doctor for a test to see if you are intolerant to gluten or lactose, which can cause bloating. Gaining body fat takes more than one meal and it’s a gradual rather than an instant bloat.
- Are your extremities looking swollen too? If your face, hands and feet are looking puffed up, this points to fluid retention, caused by a build-up of excess water in the tissues and cavities of your body. If the swelling is excessive, you should always consult a doctor just in case it’s a sign of an underlying health problem.
- Has your body fat percentage increased? There are many different ways to measure body fat percentage, with some of the more extreme ones being weighed underwater or using Dual Energy X-ray Absorptiometry (DUEL). One of the simplest – and least expensive – ways is to ask your GP to check your weight as well as assessing your Body Mass Index (BMI) when you next have an appointment. They will probably use callipers to measure the thickness of subcutaneous fat on your body.
If you’ve identified water retention as the cause of your symptoms, you can tackle the issue and redress your water balance by using natural medicines and herbal water retention tablets.
What causes water retention?
Water retention has several common triggers, and most are temporary and easy to influence:
- Diet and salt. A diet high in salt or processed food makes your body hold onto extra water to balance sodium levels. Alcohol and low fluid intake can have a similar effect.
- Hormonal changes. Fluctuating oestrogen and progesterone before a period, during pregnancy, or through perimenopause and menopause are among the most common causes of fluid retention in women.
- Medication. Certain blood pressure medications, NSAIDs (such as ibuprofen), steroids, and some antidepressants can cause the body to retain fluid as a side effect.
- Heat. Hot weather causes blood vessels to expand and can push more fluid into surrounding tissue, particularly in the legs and feet.
- Prolonged sitting or standing. Staying in one position for long periods – on a flight, at a desk, or on your feet all day – makes it harder for fluid to circulate back up from the legs, so it pools around the ankles and feet.
If retention is persistent, severe, or unexplained, it’s worth ruling out an underlying condition with your GP, since some heart, kidney, and liver conditions cause fluid retention as a symptom.
How to ease water retention
Drink plenty of water
Around six to eight glasses per day is recommended, and more in hot weather and if you’re exercising. Contrary to what you might expect, drinking more water helps to reduce water retention.
Eat a healthy diet
Eat a diet high in fibre and plenty of vegetables. Keep processed foods and those high in salt and sugar to a minimum.
Get active
Do at least 30 minutes of physical activity per day. This will help improve your overall health, your circulation and should help restore your water balance.
Try herbal water retention tablets
HRI Water Balance is a powerful blend of three active extracts, uva-ursi leaf, buchu leaf and dandelion root and leaf, all of which are traditionally used to relieve the symptoms of fluid retention and bloating to restore your natural equilibrium.
They carry the THR (Traditional Herbal Registration) symbol, which guarantees the highest quality and safety in Europe, as approved by the UK regulator, the Medicines and Healthcare Products Regulatory Agency.
Frequently asked questions
Yes – body fat and water retention aren’t mutually exclusive, and many people carry some of both. If you’ve gained weight gradually over months, that’s typically fat; a rapid increase or decrease of a few pounds within days, on top of that gradual trend, is more likely water fluctuating on top of your existing body fat.
It can ease significantly overnight if the cause was temporary – a salty meal, a long flight, or a day without much movement. More persistent fluid retention (from hormonal changes, medication, or an underlying condition) may take several days of reduced salt intake, rest, and gentle activity to resolve, or may need a herbal or medical diuretic.
Yes. Hormonal fluctuations across the menstrual cycle, pregnancy, and menopause are common triggers, as are certain medications including some blood pressure treatments, NSAIDs (like ibuprofen), steroids, and some antidepressants. If you’ve started a new medication and noticed swelling, mention it to your GP or pharmacist.
Salt is the biggest driver, since sodium makes the body hold onto water. Processed and takeaway foods, cured meats, and salty snacks are common culprits. Alcohol and a low intake of potassium-rich foods (fruit and vegetables) can also contribute.
When the number on the scale changes quickly (within a day or two), it’s almost always water, not fat. Genuine fat loss shows up gradually over one to two weeks of a consistent calorie deficit, so don’t judge fat loss from a single day’s weigh-in.
See your GP if swelling is sudden, severe, one-sided, painful, or affects your breathing, or if it’s accompanied by other symptoms like chest pain. Persistent swelling that doesn’t improve with rest, reduced salt intake, and natural remedies can occasionally be a sign of an underlying heart, kidney, or liver issue and should always be checked out.
