Decaf Coffee and Shakiness: What You Should Know

Quick answer

• Decaf coffee generally contains very little caffeine, so it’s unlikely to cause shakiness for most people.
• Shakiness after drinking decaf coffee is more likely due to other ingredients, brewing methods, or personal sensitivities.
• Potential culprits include added sugars, creamers, or even the ritual of drinking hot coffee itself.
• Underlying health conditions or medication side effects can also mimic caffeine-induced jitters.
• If you consistently experience shakiness, consult a healthcare professional to rule out other causes.

What this problem usually is (and is not)

• This guide addresses the concern of feeling shaky after consuming decaffeinated coffee, a sensation often associated with caffeine.
• It’s important to understand that “decaf” coffee typically has 97-99% of its caffeine removed, leaving only trace amounts.
• Therefore, the shakiness you experience is usually not a direct result of caffeine from the decaf coffee itself.
• This guide will help you identify other potential triggers and differentiate them from caffeine’s effects.
• We will focus on practical troubleshooting for your home brewing and consumption habits.
• This is not a substitute for professional medical advice.

Likely causes (triage list)

Water and Brewing Temperature

• Too hot water: If your coffee is brewed at excessively high temperatures, it can sometimes lead to a less pleasant taste and potentially affect how your body reacts, though this is rare for shakiness. Check your machine’s manual for recommended brewing temperatures or if it has adjustable settings.
• Inconsistent brewing: Fluctuations in water temperature during brewing can lead to uneven extraction.

Grind Size and Coffee Quality

• Incorrect grind size: A grind that is too fine for your brewing method can lead to over-extraction and bitterness. A grind that is too coarse can lead to under-extraction, resulting in weak coffee. For most drip coffee makers, a medium grind is recommended.
• Stale coffee beans: Old coffee beans can lose their desirable flavors and may produce an off-taste, though this is unlikely to cause shakiness. Ensure your decaf beans are stored in an airtight container away from light and heat.

Filter and Basket Issues

• Wrong filter type: Using the wrong type or size of filter can lead to bypass, where water flows around the coffee grounds instead of through them, affecting extraction. Always use filters designed for your specific coffee maker model.
• Clogged filter basket: A dirty or clogged filter basket can impede water flow and lead to uneven brewing.

Machine Setup and Cleaning

• Machine not clean: Residue from previous brews or mineral buildup can affect taste and potentially how your body reacts to the coffee. Regular cleaning is essential.
• Incorrect water-to-coffee ratio: Using too much coffee for the amount of water can lead to a strong, bitter brew. Conversely, too little coffee can result in a weak, watery cup.

Added Ingredients and Personal Sensitivities

• Added sugar or sweeteners: Many people add sugar or artificial sweeteners to their coffee, which can have various effects on the body, including jitters for some individuals.
• Creamers and milk: Dairy or non-dairy creamers can contain sugars or other ingredients that might affect you.
• Personal sensitivities: You may have a sensitivity to a component in the decaf coffee itself, or the act of consuming a hot beverage might be a trigger.
• Medication interactions: Certain medications can cause shakiness as a side effect, and consuming any beverage might exacerbate this.

Fix it step-by-step (brew workflow)

1. Start with fresh decaf beans: Measure out your decaf coffee beans.

• What “good” looks like: You have whole beans or pre-ground decaf coffee that smells fresh and hasn’t been open for more than a few weeks.
• Common mistake: Using old, stale beans that have lost their flavor.
• Avoid it: Check the roast date if possible and store beans in an airtight container.

2. Grind your beans (if using whole beans): Grind the decaf beans to a medium consistency, similar to table salt.

• What “good” looks like: The grounds are uniform in size and texture.
• Common mistake: Grinding too fine (like powder) or too coarse (like pebbles).
• Avoid it: Consult your coffee maker’s manual for grind recommendations.

3. Prepare the filter: Place the correct filter into your coffee maker’s filter basket.

• What “good” looks like: The filter sits snugly in the basket without any gaps or folds.
• Common mistake: Using a filter that is too small or too large, or not seating it properly.
• Avoid it: Ensure you’re using the brand and size of filter recommended for your machine.

4. Add coffee grounds: Measure the correct amount of decaf coffee grounds into the filter. A common starting point is 2 tablespoons of coffee per 6 oz of water.

• What “good” looks like: The grounds are evenly distributed in the filter basket.
• Common mistake: Scooping too much or too little coffee, or not leveling the grounds.
• Avoid it: Use a consistent measuring scoop or a scale for accuracy.

5. Add fresh water: Fill the coffee maker’s reservoir with cold, filtered water.

• What “good” looks like: The water level is between the minimum and maximum fill lines.
• Common mistake: Using tap water that may contain minerals that affect taste and machine function, or overfilling the reservoir.
• Avoid it: Use filtered water and check the fill lines carefully.

6. Assemble the machine: Ensure the brew basket is properly seated and the carafe is correctly positioned on the warming plate.

• What “good” looks like: Everything clicks into place securely.
• Common mistake: Not placing the carafe correctly, which can prevent brewing or cause spills.
• Avoid it: Double-check that the carafe is fully engaged with the brew-pause mechanism if your machine has one.

7. Start the brewing cycle: Turn on your coffee maker.

• What “good” looks like: The machine begins to heat water and drip coffee into the carafe.
• Common mistake: Forgetting to turn the machine on, or it not starting due to a power issue.
• Avoid it: Ensure the machine is plugged in and the power switch is flipped.

8. Monitor the brew (optional): Observe the brewing process to ensure water is flowing through the grounds and into the carafe.

• What “good” looks like: A steady stream of coffee is brewing without overflowing or sputtering excessively.
• Common mistake: Leaving the machine unattended if you suspect issues, or if it’s an older machine prone to problems.
• Avoid it: Stay nearby for the first few minutes of brewing, especially if you’re trying a new batch of beans or have recently cleaned the machine.

9. Pour and add extras (cautiously): Once brewing is complete, pour your decaf coffee into a mug.

• What “good” looks like: The coffee is at a comfortable drinking temperature.
• Common mistake: Adding large amounts of sugar, syrup, or creamers immediately without considering their potential impact.
• Avoid it: Start with a small amount of any additions to see how you react.

10. Taste and assess: Sip your decaf coffee slowly.

• What “good” looks like: You enjoy the taste and don’t experience any unpleasant physical sensations.
• Common mistake: Rushing the experience and drinking too quickly.
• Avoid it: Take your time to savor the coffee and notice any bodily reactions.

Prevent it next time

• Clean your coffee maker regularly: Aim for a full cleaning cycle at least once a month, and wipe down parts daily.
• Descale your machine: Follow your manufacturer’s instructions for descaling, typically every 2-3 months, depending on water hardness.
• Use filtered water: Invest in a water filter pitcher or system for better-tasting coffee and to reduce mineral buildup.
• Store decaf beans properly: Keep them in an airtight container in a cool, dark place.
• Use the correct coffee-to-water ratio: Experiment to find a balance that suits your taste, typically starting with 1:15 to 1:18 ratio by weight.
• Grind just before brewing: If possible, grind whole beans right before you brew for maximum freshness.
• Check brewing temperature: Ensure your machine brews within the optimal range (typically 195-205°F or 90-96°C) if adjustable.
• Be mindful of additions: Limit sugar, artificial sweeteners, and flavored creamers if you suspect they contribute to shakiness.
• Listen to your body: Pay attention to how you feel after drinking coffee and any additions.
• Consult your doctor: If shakiness persists, discuss it with a healthcare professional.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Not cleaning the coffee maker	Bitter taste, clogged parts, potential mold growth, off-flavors.	Run a cleaning cycle with vinegar or a descaling solution regularly.
Using stale coffee beans	Flat, cardboard-like taste, weak brew, less enjoyable aroma.	Buy beans with a recent roast date and store them properly in an airtight container.
Incorrect grind size	Over-extraction (bitter) or under-extraction (weak, sour).	Use a burr grinder for consistency and consult your coffee maker’s manual for recommended grind size.
Using tap water	Mineral buildup (scale) in the machine, affecting taste and performance.	Use filtered or bottled water for brewing.
Too much or too little coffee	Over-extraction (bitter, strong) or under-extraction (weak, watery).	Measure coffee grounds and water accurately using a scale or consistent scoop.
Adding excessive sugar/sweeteners	Potential jitters, energy crashes, masking coffee flavor.	Start with small amounts and gradually increase if needed, or try naturally sweet beans.
Not checking filter fit	Coffee bypass, grounds in the cup, weak brew, messy cleanup.	Ensure you are using the correct size and type of filter for your machine.
Brewing with water that’s too hot	Scalding the coffee, extracting bitter compounds, potentially damaging machine.	Allow water to cool slightly if brewing manually, or ensure your machine has temperature control.
Not properly seating the carafe	Leaking, incomplete brewing, potential burns from hot coffee.	Ensure the carafe is fully in place before starting the brew cycle.
Ignoring machine maintenance	Reduced lifespan of the appliance, inconsistent brewing results.	Follow the manufacturer’s cleaning and descaling schedule diligently.

Decision rules (simple if/then)

• If you feel shaky after drinking decaf coffee, then first consider what else you added to the coffee because sugar and creamers can cause jitters.
• If you still feel shaky after removing additives, then try brewing with a different batch of decaf beans because some beans might have slightly higher residual caffeine or other compounds.
• If shakiness persists with different decaf beans and no additives, then check your brewing method and machine cleanliness because improper brewing can extract unpleasant flavors and compounds.
• If your coffee maker is old or hasn’t been descaled, then descale it according to the manufacturer’s instructions because mineral buildup can affect brewing and taste.
• If you’re using a very fine grind for a drip machine, then adjust to a medium grind because too fine a grind can lead to over-extraction and bitterness.
• If you’re drinking your decaf coffee very quickly, then slow down your consumption because the ritual and warmth of hot coffee can sometimes be a trigger for jitters.
• If you recently started new medication, then check the side effects of that medication because shakiness is a common side effect of many drugs.
• If you experience other unusual symptoms along with shakiness, then consult a healthcare professional immediately because it may indicate an underlying health issue.
• If you’ve tried all troubleshooting steps and still experience shakiness, then consider a brief caffeine challenge with a known low-caffeine beverage to compare reactions.
• If you notice your decaf coffee tastes unusually strong or bitter, then your brewing ratio or grind might be off, which could indirectly affect how you feel.

FAQ

Q: Is there any caffeine in decaf coffee?

A: Yes, decaf coffee still contains a very small amount of caffeine, typically around 2-15 mg per 8 oz cup, which is significantly less than regular coffee (80-100 mg).

Q: Could the brewing process itself make me shaky?

A: While unlikely to cause direct shakiness, very high brewing temperatures or inconsistent water flow can lead to a less palatable brew, which might be perceived negatively by some individuals.

Q: What if I’m sensitive to something other than caffeine in coffee?

A: Some people might have sensitivities to acids, oils, or other compounds present in coffee, decaf or regular. These can manifest as digestive upset or other reactions, though shakiness is less common.

Q: How do I know if it’s sugar causing my shakiness?

A: Pay attention to whether you feel shaky after consuming other sugary drinks or foods. Try eliminating added sugars from your coffee for a few days to see if the shakiness subsides.

Q: Is it possible that decaf coffee is just not for me?

A: It’s possible. If you’ve ruled out other causes and consistently feel unwell after drinking decaf, it might be best to explore other non-caffeinated beverage options.

Q: Can I test my decaf coffee for caffeine levels?

A: Home testing kits for caffeine levels in beverages are not readily available or reliable. The best approach is to trust the labeling and understand that decaf is significantly lower in caffeine.

Q: Should I switch to herbal tea if I’m worried about shakiness?

A: Herbal teas are naturally caffeine-free and can be a good alternative if you enjoy warm beverages but want to avoid any potential triggers.

Q: What’s the difference between decaf and caffeine-free?

A: Decaf means most caffeine has been removed. Caffeine-free means a product contains no caffeine at all, like most herbal teas.

What this page does NOT cover (and where to go next)

• Detailed analysis of specific decaffeination processes (e.g., Swiss Water Process, CO2 process) and their potential impact on trace compounds.
• Diagnosing complex medical conditions that may cause shakiness, such as hyperthyroidism or anxiety disorders.
• Specific recommendations for medication adjustments or dietary plans for managing tremors.
• Information on commercial coffee shop beverages, which often contain many more ingredients than home-brewed coffee.

Next steps would involve consulting a healthcare professional for medical advice, exploring different types of herbal teas, or researching alternative caffeine-free beverages.