Coffee Science

The chemistry, biology, and research behind your daily cup. Caffeine metabolism, extraction science, roast chemistry, and what the research says about health.

• Bulletproof Coffee: Does Butter in Coffee Actually Make Sense?

  Bulletproof Coffee is a calorie-containing blend of coffee, MCT oil and ghee. Its recipe is straightforward; claims about focus, fasting and weight loss require more care.

• How Much Caffeine Is in a Cup of Coffee? By Roast and Brew Method

  An 8 fl oz brewed coffee has about 96 mg of caffeine as a reference point, not a fixed recipe value. Start with serving size, then consider the coffee and preparation.

• Coffee and Intermittent Fasting: Will It Break a Fast?

  Whether coffee fits a fasting plan depends on the definition of the fast, the ingredients in the cup, and individual health considerations. The available research does not provide one universal answer.

• Does Coffee Dehydrate You? Myth vs Practical Reality

  For generally healthy adults, available evidence suggests that typical coffee intake can contribute to total fluid intake rather than cause a cumulative body-water deficit. Caffeine can temporarily increase urine output, and individual circumstances still matter.

• How to Taste Coffee: A Guide to Cupping and Developing Your Palate

  Coffee tasting notes are sensory descriptors, not ingredients. This guide offers a simple two-coffee home comparison, clear sensory vocabulary, and an evidence-based explanation of formal cupping.

• Is Decaf Coffee Safe? Practical Health Facts

  Decaf coffee is a lower-caffeine option, not a caffeine-free one. Its fit for an individual depends on the product, serving, total caffeine intake, symptoms, medications, and personal clinical guidance.

• Why Coffee Makes You Poop: The Science Behind It

  Coffee can prompt a bowel movement in some people. Small human studies found that regular and decaffeinated coffee can increase distal-colon activity within minutes, but the reasons for the response are not settled.

• Does Coffee Cause Anxiety? What Caffeine Actually Does to Your Brain

  Coffee does not cause anxiety in everyone, but its caffeine can contribute to jitters, anxious feelings, palpitations, or sleep disruption for some people. Dose, total caffeine intake, timing, and individual sensitivity all matter.

• Caffeine per Ounce: How Espresso, Energy Shots, Coffee and Tea Compare

  Milligrams per ounce describe caffeine concentration, not a universal winner or a complete measure of intake. This guide shows the arithmetic for representative prepared drinks and explains how to compare a small serving with a daily total.

• How Much Caffeine Is Too Much? Daily Guidance for Most Adults

  For most adults, the FDA cites 400 mg of caffeine a day as an amount not generally associated with negative effects. That is not a universal cutoff: pregnancy, age, medicines, health conditions, sleep, and product strength all matter.