Quick answer: Coffee can help with weight loss a little, but it isn’t a weight-loss tool on its own. Caffeine slightly raises the calories you burn, and a meta-analysis of small trials found modest reductions in weight and body fat. The bigger win is that black coffee has almost no calories, while sugary coffee drinks can add hundreds. Too much caffeine, or caffeine late in the day, can hurt sleep.
Coffee is often marketed as a fat burner. The research shows a real but small effect, and how you drink it matters more than the coffee itself. Here’s what the evidence says and how to make coffee work for, not against, your goals. For coffee’s wider health effects, see is coffee good for you?
In this guide 5 sections
Does coffee help you lose weight?
A little. A 2019 systematic review and meta-analysis of 13 randomised trials with 606 participants concluded that caffeine intake “might promote weight, BMI and body fat reduction.” The trials were small and their results varied widely, so treat this as a modest nudge, not a solution. Diet, activity and sleep still do the heavy lifting.
How coffee might help
1. It slightly increases the calories you burn
In a classic study of lean and post-obese volunteers, a single 100 mg dose of caffeine raised resting metabolic rate by 3–4% for about two and a half hours. Repeated doses every two hours over a 12-hour day increased daily energy use by about 150 calories in lean people and 79 calories in post-obese people. That’s a measurable effect, but a small one.
2. It can boost exercise performance
The International Society of Sports Nutrition concludes that caffeine improves physical performance in both trained and untrained people. Typical doses studied are 3–6 mg per kg of body weight. Better workouts can support weight loss over time. A cup of black coffee is an almost calorie-free alternative to many sugary pre-workout drinks.
3. It’s a low-calorie swap
Plain coffee has almost no calories. Replacing soda, juice or sweetened drinks with black coffee is one of the simplest ways to cut liquid calories.
Does coffee suppress appetite?
Some people find coffee takes the edge off hunger for a while. That’s an individual experience, not a proven weight-loss strategy. The studies above didn’t test it. Don’t use coffee to replace meals.
How to drink coffee for weight loss
Skip the sugar, cream and butter
Harvard T.H. Chan School of Public Health notes that sugar, cream and milk “can quickly bump up the calorie counts,” and that the sugar and fat in coffeehouse drinks might offset coffee’s health benefits. Adding butter or oil adds a lot of calories from fat; see our explainer on Bulletproof coffee before trying it. If black coffee tastes too harsh, try these tips to enjoy black coffee.
Treat specialty drinks as treats
Flavoured lattes, mochas and blended drinks can be high in sugar and calories. Check the nutrition information before ordering and keep them occasional.
Don’t drink it late in the day
In a sleep study, 400 mg of caffeine taken 6 hours before bed still disrupted sleep. Researchers recommend avoiding substantial caffeine for at least 6 hours before bedtime.
Don’t overdo it
The FDA cites 400 mg of caffeine a day, roughly two to three 12-ounce cups of brewed coffee, as an amount not generally associated with negative effects for healthy adults. More caffeine won’t speed up weight loss, and it can cause jitters, a racing heart and poor sleep. See how much coffee is too much.
Frequently asked questions
Does black coffee burn belly fat?
No food or drink targets belly fat. Caffeine slightly raises energy use, and trials show modest overall fat loss at best. Black coffee helps mainly by replacing higher-calorie drinks. More on black coffee benefits.
Does lemon coffee help you lose weight?
There’s no evidence that adding lemon makes coffee better for weight loss. See lemon coffee.
What about green coffee bean extract?
It’s a separate supplement, not regular coffee. Read our overview of green coffee beans.
This article is for general information and isn’t medical advice.
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Nice article!
I have been trying to lose a few pounds and did a few research on natural ways to lose weight. I have read about coffee being a good appetite suppressant. It really does! However, just like any other food, it should be consumed in moderation to avoid any problems. And yes, I agree with ditching butter and sugar!
Stay safe and healthy!
Cheers!