Green Tea vs Oolong Tea: Which One Actually Burns More Fat?

When it comes to natural fat-burning teas, two names dominate the conversation: green tea and oolong tea.

Both have been used for centuries in Eastern medicine and are now praised around the world for their metabolism-boosting, antioxidant-rich profiles. But if you're trying to lose weight and you're asking:

“Which tea actually burns more fat?”

You're in the right place.

While both teas share some benefits, they have distinct properties that affect how your body processes fat, stabilizes blood sugar, manages energy, and more.

In this post, you’ll learn:

• The real fat-burning benefits of green tea vs oolong

• What the research says about their metabolism effects

• Which one is better for fat loss (and who should drink each)

• A smarter option if you want the benefits of both without choosing

Want both teas in one simple system? This dual tea stack gives you green and oolong daily for faster results.

Let’s break down what makes green tea such a popular choice for fat burning—and where oolong might surprise you.

What Makes Green Tea a Fat-Loss Staple?

Green tea has earned its place as one of the most researched natural ingredients for weight loss. It's not hype — the science backs it up.

Here’s why so many fat-loss supplements and metabolism teas include green tea as a core ingredient:

1. Rich in EGCG (Epigallocatechin Gallate)

EGCG is a powerful antioxidant shown to enhance fat oxidation, especially during moderate-intensity exercise. It helps your body tap into stored fat for energy.

Study highlight: A landmark study published in The American Journal of Clinical Nutrition showed that green tea extract increased 24-hour energy expenditure by 4% — without changing diet or exercise habits (source).

2. Supports Thermogenesis

Green tea gently stimulates thermogenesis — the process by which your body burns calories to produce heat. It works synergistically with natural caffeine for a mild metabolic boost without jitters.

3. Improves Insulin Sensitivity and Blood Sugar Stability

Studies suggest that green tea may improve insulin function, making it easier to manage appetite and reduce fat storage.

4. Enhances Exercise Performance

Because of its clean caffeine content and antioxidant load, green tea may improve endurance and help you burn more fat during movement.

5. Gentle on the Gut

Unlike harsh fat burners, green tea supports digestion and gut health, which is increasingly linked to fat loss and hormonal regulation.

How Oolong Tea Supports Weight Loss Differently

While green tea gets most of the spotlight, oolong tea is often the unsung hero of natural fat loss support.

Oolong is a partially fermented tea that sits between green and black tea in terms of oxidation. This unique process gives it a distinct profile of antioxidants and polyphenols that can help your metabolism in different ways than green tea.

Here’s how oolong tea contributes to weight loss:

1. Boosts Fat Oxidation and Lipid Metabolism

Oolong tea has been shown to increase the breakdown of stored fat, particularly in abdominal areas.

Study highlight: A clinical study in Chinese Journal of Integrative Medicine found that drinking oolong tea for six weeks led to a 3.3 kg (7.3 lbs) reduction in body weight and a significant decrease in body fat percentage among overweight individuals (source).

2. Moderate Caffeine, Strong Results

Oolong contains just enough caffeine to gently stimulate your metabolism without causing crashes or anxiety. The natural balance of caffeine and theaflavins helps maintain alertness and fat-burning without overstimulation.

3. Reduces Fat Absorption

Some compounds in oolong tea may help block the absorption of dietary fat and promote its excretion through digestion, helping reduce total caloric load.

4. Supports Blood Sugar Balance and Cravings Control

By improving insulin sensitivity and gut health, oolong can reduce the frequency and intensity of sugar cravings — a key factor in sustainable fat loss.

5. Tastes Mellow and Smooth

Many people find oolong easier to sip regularly than green tea due to its smooth, floral taste. It’s more enjoyable — and habits that feel good tend to stick.

Still not sure which tea is better for you?

Why not get the benefits of both in one easy daily routine?

All Day Slimming Tea combines the fat-burning power of green tea with the metabolism-boosting properties of oolong, so you don’t have to choose.

With one cup a day:

• Support thermogenesis and fat oxidation

• Reduce cravings and balance energy

• Enjoy real ingredients with no added sugars or junk

What Green Tea and Oolong Tea Have in Common

While green tea and oolong tea have their differences, they also share several powerful traits that make them two of the best teas for supporting natural fat loss.

Here’s what they have in common:

1. Both Boost Thermogenesis

Both teas contain natural caffeine and catechins that work together to increase calorie burn through thermogenesis.

2. Both Improve Fat Oxidation

Clinical research shows that both green and oolong tea help your body tap into fat stores for energy, especially during movement.

3. Both Are Packed With Antioxidants

These antioxidants reduce oxidative stress, support cellular health, and improve recovery — which matters for fat-burning and energy.

4. Both Are Gentle Daily Habits

Unlike stimulant-heavy pills or sugary detoxes, both teas are gentle, sustainable, and safe to use daily.

That’s why more people are choosing All Day Slimming Tea — a smart combination of green and oolong tea that delivers both benefits in one simple morning cup.

Want to learn more about day-and-night tea timing for fat loss?

Check out our guide on the best morning and evening teas for weight loss

Or if you're struggling with late-night cravings or low metabolism after dinner, read this next: Why Metabolism Slows Down at Night (And How the Right Tea Can Help)

Key Differences: Caffeine, Antioxidants, and Thermogenesis

While green tea and oolong tea share several fat-burning benefits, they each bring something unique to the table.

Understanding these differences can help you choose (or combine) them more effectively.

Caffeine Content

Tea	Approximate Caffeine per 8 oz
Green Tea	20–45 mg
Oolong Tea	30–60 mg

Verdict: Oolong typically contains slightly more caffeine, which may provide a stronger metabolic effect in the short term. However, green tea’s lower caffeine can be better for sensitive individuals or evening use.

Antioxidant Profile

Tea	Primary Antioxidants
Green Tea	Catechins (especially EGCG)
Oolong Tea	Theaflavins + moderate catechins

Verdict: Green tea has higher EGCG levels, which are strongly linked to fat oxidation and reduced belly fat. Oolong has a broader spectrum due to partial fermentation, which may offer added gut health and cholesterol benefits.

Thermogenic Effect

Both teas enhance thermogenesis — your body's ability to burn calories to generate heat. But they do so slightly differently:

• Green tea combines catechins + caffeine to gently raise metabolism.

• Oolong may boost fat burning more directly and for longer due to its unique polyphenol balance.

Verdict: Oolong may offer a longer burn, while green tea provides a cleaner, more sustainable metabolic lift.

Which Tea Is Better for Fat Loss? (Based on Research)

So what does the science actually say about which tea burns more fat — green or oolong?

The answer: both work, but in slightly different ways.

Here’s a closer look at the research:

Green Tea Research

• A study in The American Journal of Clinical Nutrition showed that participants who consumed green tea extract increased their 24-hour energy expenditure by an average of 4%, even without changes in diet (source).

• Another 12-week study found that green tea helped reduce belly fat and improved fat oxidation during exercise.

Oolong Tea Research

• A study published in the Chinese Journal of Integrative Medicine found that overweight individuals drinking oolong tea daily lost 3.3 kg (7.3 pounds) in six weeks without other interventions (source).

• Additional studies suggest oolong may sustain elevated metabolism longer than green tea due to its oxidation profile.

Final Verdict:

• Green tea is ideal for those who want a gentler metabolic lift and higher antioxidant load.

• Oolong tea may be better for people who want stronger appetite control and slightly more caffeine-driven fat-burning.

But here’s the truth:

Both are great on their own — but even better together.

What If You Didn’t Have to Choose?

After reviewing the science, one thing is clear:

Green tea and oolong tea both work — and they work even better together.

So instead of asking which one is better... What if you could just drink one tea that gives you the full benefits of both?

That’s exactly what All Day Slimming Tea offers:

• Green tea for clean energy, fat oxidation, and antioxidant support

• Oolong tea for appetite control, metabolism boost, and longer-lasting fat burn

Both are blended into the Morning Tea formula, which pairs perfectly with the Evening Tea for digestion, detox, and better sleep.

This isn’t just a single-function supplement. It’s a daily system designed to:

• Align with your body’s circadian rhythm

• Eliminate the need for guesswork or stacking products

• Support consistent results without harsh stimulants or pills

Thousands are already feeling the difference. You could be next.

Click here to try All Day Slimming Tea and get the best of both worlds in every cup

FAQ: Green Tea vs Oolong Tea for Fat Loss

1. Is oolong tea better than green tea for weight loss?

Not necessarily. Oolong may have a slightly stronger thermogenic effect, but green tea offers more antioxidants and a gentler energy boost. For best results, many people use both together.

2. Can I drink green tea and oolong tea at the same time?

Yes! They work well together and can be safely consumed in the same blend. Many metabolism teas now include both for their synergistic fat-burning properties.

3. Which tea is better for belly fat?

Both may help reduce belly fat when combined with a healthy lifestyle. Green tea supports fat oxidation, while oolong may help regulate lipid metabolism and cravings.

4. Do they have different side effects?

Green tea is typically easier on the stomach, while oolong has more caffeine. If you're sensitive to caffeine, start with smaller servings or opt for blends with balanced levels.

5. What’s the best way to get both in one tea?

Look for a morning blend that includes both green and oolong tea. All Day Slimming Tea includes both and is designed to deliver full-day metabolism support.

About The Author: Jonathan Philips is a certified nutritionist and wellness expert with over a decade of experience helping individuals achieve vibrant health through natural strategies.

He is passionate about simplifying complex science into actionable advice that empowers people to take charge of their well-being.

When he’s not researching cutting-edge wellness breakthroughs, Jonathan enjoys hiking, exploring new healthy recipes, and promoting a balanced, holistic lifestyle.

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