Why Black Tea and Coffee May Make You Hungrier at Breakfast

If you’re rushing through your morning with a black tea or black coffee before work, only to feel starving an hour later, you’re not alone. Many professionals reach for these drinks to wake up fast—but they may be setting themselves up for an early energy slump and stronger hunger pangs.

Yes, both black tea and coffee contain caffeine, which gives a short-term boost. But according to UK nutritionists, that lift fades quickly, often leaving you more tired—and hungrier—before lunch.

How Caffeine Gives a Short-Term Boost

Both black tea and coffee contain caffeine, a stimulant that triggers your adrenal glands to release adrenaline, also known as epinephrine. This hormone temporarily increases alertness, focus, and energy levels. That’s why a cup first thing in the morning can feel invigorating, especially during a hectic workweek.

Why the Effect Fades Fast

The adrenaline surge from caffeine doesn’t last. Once it dissipates—which can happen within an hour or two—your body returns to its previous state, often more fatigued than before. This sudden drop can make you feel mentally foggy and physically depleted, commonly referred to as an “energy crash.”

Why That Leads to Hunger

Along with fatigue, the crash tends to trigger hunger signals. Your body seeks quick energy to compensate for the lost adrenaline rush. That means you’re more likely to crave snacks or overeat at your next meal shortly after drinking tea or coffee alone in the morning.

UK nutritionists warn that for people with demanding jobs and tight schedules—essentially, most office workers—the common habit of skipping a proper breakfast and relying solely on caffeinated beverages can backfire, leading to increased hunger and potentially poor eating choices later in the day.

What You Should Do Instead

Nutritionists recommend pairing your tea or coffee with a source of protein, fiber, or healthy fats to slow digestion and maintain steady energy. Alternatively, opt for a more balanced breakfast that includes complex carbohydrates along with your caffeinated drink. This helps avoid the adrenaline rollercoaster and keeps you full longer.

Frequently Asked Questions

Does black tea have as much caffeine as coffee?

Black tea generally contains less caffeine than coffee. An average cup of black tea has around 40–70 mg of caffeine, while a typical cup of black coffee contains 95–200 mg. However, both can trigger adrenaline release, leading to similar short-term energy effects followed by a potential crash and increased hunger.

Why do I feel hungry after drinking coffee in the morning?

Feeling hungry after coffee is often due to the caffeine-induced adrenaline spike and subsequent crash. Once the adrenaline wears off, your energy dips and your body signals for food to restore balance, often making you feel hungrier sooner than expected.

Can caffeine really cause an energy crash?

Yes. Caffeine stimulates the adrenal glands to release adrenaline, which boosts energy temporarily. When the effect fades—usually within an hour or two—you may experience fatigue, mental fog, and a drop in blood sugar, commonly called an energy crash.

Is black coffee better than black tea for staying full?

Not necessarily. Both black coffee and black tea can cause a short-lived energy boost followed by a crash. Neither provides calories or nutrients to sustain you. Drinking either on an empty stomach can still lead to hunger shortly afterward.

What should I eat with my morning coffee to avoid getting hungry?

To avoid post-coffee hunger, pair your brew with protein (like eggs or yogurt), fiber (such as oatmeal or fruit), or healthy fats (like avocado or nuts). These slow digestion and help maintain stable energy and blood sugar levels throughout the morning.

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