Why Water Can Help You Lose Weight — But Only Sometimes
Negative, Null and Beneficial Effects of Drinking Water on Energy Intake, Energy Expenditure, Fat Oxidation and Weight Change in Randomized Trials: A Qualitative Review
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Drinking water doesn't always make you lose weight — it only helps if you swap it for sugary drinks, if you're overweight, or if you drink a lot more than usual while eating less food.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 51 / 5
Evidence Score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Drinking water doesn't always make you lose weight — it only helps if you swap it for sugary drinks, if you're overweight, or if you drink a lot more than usual while eating less food.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 51 / 5
Evidence Score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
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Claims (10)
For people who are overweight, drinking a glass of water on an empty stomach can slightly boost calorie burning, but this doesn’t happen in people with normal weight.
If kids or overweight adults switch from soda or juice to water without changing what they eat, they tend to gain less weight over time — but if they’re on a strict diet, water doesn’t help much.
Water-induced thermogenesis is significantly greater in metabolically inflexible, overweight individuals compared to metabolically healthy individuals.
When you drink water instead of sugary drinks, your body burns more fat, especially if you haven’t eaten recently or are doing light exercise, because sugar in drinks stops your body from burning fat.
If you drink water instead of soda, juice, or milk with your meals, you tend to eat less food overall, which can help you take in fewer calories.