The Real Pros and Cons of Drinking Coffee

You’ve probably heard red wine and champagne are classic dinner-date drinks — but recent science suggests you might want to rethink that tradition. What if your evening drink choice could actually affect your romantic evening? New findings explore how coffee influences arousal, sleep, and even your health — and the answers might surprise you.

In short: Yes, coffee can increase sexual activity — but only in certain doses and mainly in women who don’t drink coffee regularly. Caffeine may also support erectile function by improving blood flow. But if she drinks coffee daily, wine and charm might work better.

Coffee, Sex, and Arousal: What Research Shows

Researchers at the University of South Wales conducted experiments on female mice and found that a certain dose of caffeine led to more frequent sexual interactions. The effect, however, appears to be limited to those not accustomed to regular caffeine intake. For regular coffee drinkers, the usual romance boosters — like wine and personal charm — might still be your best bet.

There’s also a theory that caffeine can make men more sexually active. By increasing blood flow, caffeine may enhance circulation to sexual organs, potentially aiding erection quality and duration. This has led some to consider coffee as a possible aid in preventing erectile dysfunction.

Caffeine Content: Coffee vs Tea vs Other Drinks

It’s often said coffee keeps you awake more than tea — but the truth is more nuanced. A typical cup of instant coffee contains about as much caffeine as a strong cup of black tea, or slightly more. Surprisingly, green tea can actually have more caffeine than coffee. Yet people tend to avoid coffee in the afternoon while continuing to drink tea, unknowingly consuming even more caffeine.

Doctors recommend avoiding both coffee and tea within six hours of bedtime, due to their caffeine content. While coffee’s caffeine hit is more immediate, tea’s caffeine effects are smoother but longer-lasting.

Decaf Coffee: It’s Not Caffeine-Free

If you think drinking decaffeinated coffee means you’re avoiding caffeine altogether, think again. Decaf coffee does still contain caffeine — just much less. On average, decaf has about one-fifth the caffeine of regular instant coffee and one-third the caffeine of cola. So while it’s significantly lower, it’s not zero.

How Coffee Loses (or Gains) Its Chemicals During Processing

The decaffeination process involves steaming raw coffee beans to draw out caffeine particles, then treating them with the chemical solvent dichloromethane. This method is widely used around the world, and scientists believe the final product remains safe for consumption, though it’s not entirely free of chemical residues.

What Really Determines Coffee’s Flavor

The taste of your coffee depends heavily on how it’s roasted and brewed. Coffee beans contain aromatic oils that start to evaporate at around 200°C. The more oils extracted during roasting, the stronger and more bitter the flavor — and the richer the aroma. You can tell how dark a roast is just by looking at the color: beans start off pale or slightly green and turn brown to black as they roast.

Brew time also affects taste and caffeine extraction. Longer brew times and darker roasts tend to pull out more caffeine and intensify bitterness. If you’re after maximum caffeine, go for a darker roast and a longer extraction.

The Bitter Truth: Why Coffee Tastes Bitter (And It’s Not the Caffeine)

Contrary to popular belief, caffeine isn’t what makes coffee bitter. The bitter taste actually comes from antioxidants in coffee that are beneficial to your health. So if you’re enjoying a bitter cup, you’re also likely getting some of those health-promoting compounds. Embrace the bitterness — it might just be keeping you younger and healthier.

The Accidental Discovery of Coffee

The story of coffee’s discovery goes back to around the year 800 in Africa. Legend has it that an Ethiopian shepherd named Kaldi noticed his goats acting unusually energetic and staying up at night after eating red berries from a certain tree. Curious, he tried the berries himself and brought them to a local priest, who created the first batch of coffee. The drink helped monks stay awake through long nights of prayer.

Frequently Asked Questions

Does coffee really increase sexual desire in women?

Research on female mice showed that a certain dose of caffeine led to increased sexual activity. This effect may apply to women who don’t drink coffee regularly. However, the effect hasn’t been conclusively proven in humans, and regular coffee drinkers may not see the same results.

Can caffeine help with erectile dysfunction?

Caffeine may improve blood flow, including to sexual organs, which could support erectile function and potentially prolong erection duration. While not a guaranteed cure, it’s theorized that caffeine might help prevent mild erectile dysfunction by enhancing circulation.

Is decaf coffee completely caffeine-free?

No. Decaf coffee typically contains about one-fifth the caffeine of regular instant coffee and one-third the caffeine of cola. While the caffeine content is significantly lower, it is not zero, so it’s not entirely free of stimulants.

Why does darker roasted coffee taste more bitter?

Darker roasts extract more aromatic oils from the coffee bean, which increases both bitterness and aroma intensity. The longer and darker the roast, the more compounds are released — including those that contribute to a bitter taste. Longer brew times also enhance caffeine and bitterness extraction.

Is the bitterness in coffee bad for you?

Not at all. The bitter compounds in coffee are often antioxidants, which can have health benefits. So while bitterness might be unpleasant to some, it’s also associated with positive health effects, including potential anti-aging properties.

Does tea have more or less caffeine than coffee?

A cup of strong black tea or even green tea can contain as much or more caffeine than coffee. People often avoid coffee in the afternoon but continue drinking tea, unaware they may be consuming similar or higher levels of caffeine later in the day.

Recommended FrontStreet Beans for Coffee Lovers

Explore FrontStreet Coffee’s Ethiopia Yirgacheffe for a bright, floral cup with citrus and stone fruit notes, or try their Colombia Huila for a balanced profile with caramel and almond undertones. For something deeper, their Sumatra Mandheling offers earthy, spicy richness. All are freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.