Last updated: 23 August 2026.
Herbs to Increase Metabolism: What Actually Helps?
If you're trying to lose weight after 35, you've probably heard that certain herbs can "boost" or "speed up" your metabolism.
The idea is appealing. If your metabolism could work a little harder, perhaps losing weight would become easier.
But there's an important difference between supporting metabolic processes and dramatically increasing the number of calories your body burns every day.
Some herbs and plant compounds have been studied for their effects on energy expenditure, fat oxidation, appetite, or other processes related to weight management. The effects, however, are generally modest—and no herb can replace the fundamentals of sustainable weight loss.
If you're considering an herbal product for metabolism, here's what to know before buying one.
What Does It Mean to Increase Metabolism?
Your metabolism is the collection of chemical processes your body uses to maintain life and produce energy.
When people talk about "boosting metabolism" for weight loss, they're usually referring to increasing energy expenditure—the amount of energy the body uses.
Your total daily energy expenditure comes from several components, including:
- Your resting metabolic rate
- Physical activity
- The energy required to digest food
- Everyday movement outside structured exercise
This is why an herb that produces a small change in energy expenditure shouldn't be confused with a dramatic increase in metabolic rate.
For weight management, the practical question is therefore not simply:
"Does this herb increase metabolism?"
It's:
"Does it have credible evidence that it can contribute to weight management in a meaningful way?"
7 Herbs and Plant Compounds Commonly Studied for Metabolism
1. Green Tea
Green tea is one of the most extensively studied plants in this category.
Its leaves contain catechins, including EGCG, as well as caffeine.
Research has investigated green tea catechins and caffeine for their potential effects on energy expenditure and fat oxidation.
The important point is that any effect on body weight appears to be relatively modest.
Green tea can therefore be viewed as a possible supporting part of a weight-management routine, rather than a standalone fat-burning solution.
Best for: People who enjoy green tea or want a caffeinated beverage with naturally occurring plant compounds.
2. Matcha
Matcha is powdered green tea made from the leaves of Camellia sinensis.
Because you consume the powdered leaf rather than discarding the leaves after brewing, matcha provides catechins and caffeine.
That makes it particularly interesting to people looking for a convenient way to incorporate green tea into their daily routine.
But matcha shouldn't be treated as fundamentally different from green tea when it comes to weight loss.
The potential benefit is still modest, and adding large amounts of sugar or high-calorie ingredients can work against a calorie-conscious diet.
Best for: People who prefer matcha as a daily beverage.
3. Ginger
Ginger is traditionally used as a culinary spice and herbal ingredient.
Research has investigated ginger for several potential effects relevant to weight management, including appetite, thermogenesis and metabolic processes.
The evidence is not strong enough to describe ginger as a powerful metabolism booster.
Its practical advantage is that it is easy to incorporate into food and beverages without relying on specialized supplements.
Best for: People who already enjoy ginger and want an easy food-based addition to their routine.
4. Cayenne Pepper
Cayenne contains capsaicin, the compound responsible for its characteristic heat.
Capsaicin has been studied for its potential effects on thermogenesis, energy expenditure and appetite.
Some research suggests that capsaicin can produce small changes in energy expenditure, but these effects should be kept in perspective.
Adding cayenne to food isn't going to transform a slow metabolism into a fast one.
Best for: People who enjoy spicy foods and want to incorporate capsaicin through their diet.
5. Turmeric
Turmeric contains curcumin, a compound that has received considerable scientific attention.
Much of the interest around turmeric relates to inflammation and other biological processes rather than a direct increase in metabolic rate.
Some research has examined curcumin and body-weight-related outcomes, but that isn't the same thing as demonstrating that turmeric significantly speeds up metabolism.
It's therefore better viewed as a nutritionally interesting spice than as a dedicated metabolism booster.
Best for: People who want to use turmeric as part of an overall healthy eating pattern.
6. Cinnamon
Cinnamon is another common culinary spice that has been investigated for possible effects on blood glucose regulation and metabolic health.
Research has also examined associations between cinnamon intake and body composition or weight-related outcomes.
However, evidence that cinnamon directly produces a meaningful increase in metabolic rate is limited.
It's a useful example of why "supports metabolic health" and "boosts metabolism" shouldn't automatically be treated as the same claim.
Best for: Adding flavor to meals and reducing reliance on heavily sweetened ingredients.
7. Black Pepper
Black pepper contains piperine, which has been studied for various biological effects.
Some laboratory and early research has explored piperine in relation to metabolism and body-weight regulation.
But evidence from human trials is much more limited than the marketing around many "metabolism booster" supplements suggests.
Black pepper can certainly be part of a healthy diet, but there isn't good reason to expect ordinary amounts of pepper to produce dramatic fat loss.
Best for: Culinary use rather than relying on it as a primary weight-loss intervention.
Which Herbs Actually Increase Metabolism?
This is where marketing can become misleading.
A laboratory finding showing that a plant compound influences thermogenesis doesn't necessarily mean that taking the herb will produce substantial weight loss in humans.
Similarly, an ingredient that slightly increases energy expenditure doesn't automatically translate into a meaningful change in body weight.
The evidence is strongest when researchers have conducted controlled human studies rather than relying solely on laboratory or animal research.
For that reason, green tea and its catechins have received substantially more attention in human weight-management research than many of the herbs promoted online as "metabolism boosters."
Can you find a formula that is actually designed around this mechanism rather than simply using "fat burner" as a marketing label?
That's where the next page goes deeper.
The Missing Piece Behind Stubborn Weight Gain After 40 →
What to Look for in a Metabolism Supplement
If you're considering buying an herbal metabolism product, don't start with the biggest claim on the front of the bottle.
Start with the ingredient label.
Check the actual ingredients
Look for clearly identified ingredients and amounts rather than a proprietary blend that hides individual quantities.
Pay attention to caffeine
Many metabolism products combine green tea, caffeine and other stimulants.
More stimulation doesn't necessarily mean better weight loss.
It can instead increase the likelihood of unwanted effects such as nervousness, jitters or sleep disruption.
Avoid exaggerated promises
Be skeptical of products claiming that a few capsules can dramatically accelerate metabolism or cause rapid fat loss without changes to diet or activity.
Human metabolism is considerably more complicated than that.
Look at the serving size
Two products can contain the same named ingredient but provide very different amounts.
Always compare the actual serving information.
Can Herbs Help You Lose Weight After 35?
They may play a supporting role, but they shouldn't be considered the main mechanism of weight loss.
As we get older, changes in body composition, activity levels, muscle mass, sleep and eating patterns can all affect energy balance.
That makes a broader approach more useful than searching for one ingredient that supposedly "fixes" metabolism.
An herbal tea that replaces a sugary drink, for example, can be useful because of the overall dietary change, not because the herb suddenly causes large amounts of fat burning.
Likewise, using ginger or cinnamon in meals can make healthy foods more enjoyable without adding many calories.
The context matters.
Herbs vs. Metabolism Supplements
There's an important distinction between using an herb as food and taking a concentrated supplement.
You might drink green tea, add ginger to food or use cinnamon in oatmeal.
A supplement can contain much more concentrated amounts of certain compounds.
That means you shouldn't assume that "natural" automatically means risk-free.
Concentrated herbal products can interact with medications or cause side effects, and some ingredients have substantially more evidence than others.
If you take medication, have a medical condition, or are considering a concentrated herbal supplement, talk with a qualified healthcare professional before using it.
A Simple Way to Think About Metabolism
Instead of looking for a single herb that dramatically increases metabolism, think about the hierarchy of what matters.
First: overall calorie intake and food quality.
Second: physical activity and maintaining muscle.
Third: sleep and recovery.
Then: potentially useful foods, beverages and plant compounds that can complement those habits.
That perspective prevents a relatively small effect from an herb from being given more importance than it deserves.
Ready to Try a Metabolism-Support Supplement?
If you've decided that you want something more convenient than buying and preparing individual herbs, a properly labeled metabolism-support supplement may be the next option to investigate.
Before you buy, check the full ingredient list, serving amounts, caffeine content and manufacturer information. Avoid products that rely on proprietary blends or promise dramatic weight loss without diet or activity changes.
→ See our recommended metabolism-support supplements and compare the ingredients, serving sizes and formulas before choosing one.
Choose the product that fits your needs and tolerance rather than simply choosing the one making the biggest weight-loss promise.
If you take medication, have a medical condition, or are considering a concentrated herbal product, check with a qualified healthcare professional before using it.
Frequently Asked Questions
What is the best herb for metabolism?
There isn't one herb that can be called the universally best metabolism herb. Green tea, ginger, cinnamon, and berberine have all been studied for different aspects of metabolic health, but the strength and type of evidence differ substantially.
Do metabolism herbs actually help you lose weight?
Some ingredients may have modest effects on body weight or metabolic markers, but they should not be expected to produce substantial weight loss by themselves. NCCIH notes that most supplements marketed for rapid weight loss have not been proven effective for long-term weight control.
Does green tea speed up metabolism?
Green tea catechins and caffeine may have a modest effect on body weight and energy-related processes, but the overall effect is small and inconsistent. It should not be treated as a powerful fat-burning solution.
Is ginger good for metabolism?
Ginger has been studied in randomized trials involving overweight and obese adults. A meta-analysis found improvements in several measures, including body weight and fasting glucose, although results were not consistent across all outcomes.
Can herbs replace exercise for boosting metabolism?
No. Herbs cannot replace the benefits of resistance training, daily movement, adequate protein, and other lifestyle factors that support healthy body composition.
Should I take a metabolism supplement after 40?
It depends on the ingredients, your health circumstances, medications, and what you're actually trying to accomplish. A supplement should be considered an optional component of a broader strategy, not a replacement for nutrition and physical activity.
The Bottom Line
There are several herbs and plant compounds that have been studied for effects related to metabolism, thermogenesis, appetite or weight management.
Green tea and matcha have some of the most relevant human research, particularly because they contain catechins and caffeine.
Ginger, cayenne, turmeric, cinnamon and black pepper are also interesting plant foods, but the evidence that they meaningfully increase metabolic rate or cause substantial weight loss is more limited.
If you're choosing an herbal product, focus on evidence, ingredients, dosage transparency and realistic expectations rather than promises of dramatically accelerated fat burning.
For sustainable weight loss after 35, herbs can potentially be part of the picture—but they are a supporting player, not the foundation.
References
- Hursel R, et al. (2011). The effects of green tea on weight loss and weight maintenance: a meta-analysis. Int J Obes (Lond).
- Whiting S, et al. (2012). Capsaicinoids and capsinoids. A potential role for weight management? Appetite.
- Chandrasekhar K, et al. (2012). A prospective, randomized, double-blind, placebo-controlled study of the safety and efficacy of a high-concentration full-spectrum extract of Ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med.
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