Can Drinking Hot Water Really Help You Lose Weight? Experts Explain

You may have come across a surprising wellness trend picking up speed online: people say that drinking a daily cup of hot water (with nothing added) can do everything from supporting weight loss and giving you clearer skin to easing menstrual cramps and soothing sore throats.

The habit is often promoted as an easy, “natural” health fix.

But do these supposed benefits hold up - or is hot water simply the latest viral wellness fad?

The short answer

Drinking hot (not boiling) water is generally safe, and plenty of people report that it helps them feel better - although the reasons are not always clear.

If there are benefits, they may come from drinking more water overall, sticking to a consistent health routine, or the comfort and relaxation that warmth can bring, rather than from the water being hot.

Put another way, the water itself - and the habit of doing something you believe is good for you - is likely to matter more than the temperature.

Although warmth can be soothing for certain symptoms, current research does not show that hot water provides special health benefits beyond those you get from being properly hydrated.

Hydration matters more than temperature in the hot water trend

Water is essential for life, whether you drink it hot, cold, or at room temperature. Staying hydrated supports digestion, circulation, kidney function, blood pressure regulation, and overall wellbeing.

Research published in 2025 even suggests that not drinking enough water could make coping with everyday stress significantly harder.

So far, there is little robust scientific evidence that hot water has unique health benefits compared with cool water or water at room temperature, beyond what hydration alone can provide.

Myth #1: hot water helps with weight loss

There are no high-quality human trials showing that drinking hot water on its own leads to meaningful weight loss.

Broader research on water intake suggests that drinking more fluids can support weight management by increasing feelings of fullness before meals and by replacing sugary or high-calorie drinks. However, the evidence is not strong enough to favour hot water over other water temperatures for weight loss.

One small study suggests that drinking warm water may stimulate gut movements (peristalsis), which could support digestion - but the effect was modest and does not translate into fat loss.

In simple terms, if drinking hot water helps you cut down on sugary drinks or increases your total water intake, it may support weight goals indirectly. But the temperature itself is not what “burns fat”.

Myth #2: hot water cures a sore throat

This is where the strongest case exists for temperature making a difference.

Warm fluids can help soothe a sore throat and may ease nasal congestion. The warmth - and sometimes the steam - can loosen mucus and calm irritated tissues in the throat and airways.

That said, this is not unique to plain hot water. Warm teas, herbal infusions, and warm lemon drinks can offer similar relief because they provide both heat and fluid. Warm drinks are commonly recommended for upper respiratory symptoms for exactly this reason. This does not cure infections or shorten illness, but symptom relief is real and physiologically plausible.

So, hot water and other warm drinks can ease symptoms even though they do not treat the underlying cause.

Myth #3: hot water clears your skin

There is no direct scientific evidence that drinking hot water improves skin clarity or “detoxifies” the skin.

Adequate hydration helps maintain skin elasticity and can reduce dryness. However, research does not show that hot water is better than water at other temperatures for skin health.

Claims that hot water “detoxifies” the skin are misleading. Detoxification is handled by organs such as the liver and kidneys, not by flushing the body with hot water.

So, drinking enough water supports skin health - but its temperature does not appear to make a meaningful difference.

Myth #4: hot water reduces menstrual pain

Applying external heat - such as using a hot water bottle - can help muscle cramps and menstrual pain by relaxing tissues and improving circulation.

But drinking hot water by itself does not relieve menstrual pain. Staying well hydrated during menstruation may help lessen some discomfort linked to fluid retention, even though water temperature does not seem to matter.

Some teas (especially green tea and thyme tea) may help by lowering prostaglandin levels (a hormone implicated in menstrual pain) and reducing oxidative stress (a factor contributing to menstrual pain) in the uterus. Together, good hydration and these teas may help ease menstrual discomfort, but hot water alone is not a cure.

So, heat applied to the body can help, but drinking hot water alone does not have strong evidence as a remedy for cramps.

Why do hot water health claims persist?

Holding a warm drink can feel comforting, may encourage you to drink more fluid, and can become part of a calming routine that supports your mental health.

These sensory and ritual effects are genuine, even if any direct physical benefits are limited. Social media can also make personal stories feel like proof, which helps these claims spread rapidly.

However, most of the bigger claims - including weight loss, clearer skin, and fewer cramps - are not strongly backed by scientific evidence beyond the basic benefits of hydration. The temperature of your water matters less than drinking enough of it.

So, if hot water helps you drink more, feel calmer, or begin your day with a ritual you enjoy, that is fine. Just do not assume the warmth itself is a “secret cure”.

Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland, and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University

This article is republished from The Conversation under a Creative Commons licence. Read the original article.