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Black coffee, hot, plain, no sugar
CALORIES
GI
POTASSIUM
FIBER
Selected: 100 g
2
KCAL / 100G
Carbs
0g
· 0%
Protein
0.1g
· 100%
Fat
0g
· 0%
Fiber
0g
Vitamins
B2
0.08mg · 6% DV
B1
0.01mg · 1% DV
B3
0.19mg · 1% DV
B5
0.05mg · 1% DV
Minerals
Magnesium
3mg · 1% DV
Potassium ⭐
49mg · 1% DV
Calcium
2mg · 0% DV
Iron
0mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
NOVA 2
Minimally Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
Caffeine sensitivity varies, but coffee consumed in the afternoon or evening can make it harder for some people to fall asleep. If sleep is affected, try stopping caffeine at least 6 hours before bedtime.
For people accustomed to caffeine, plain hot coffee before exercise may support alertness and perceived performance. Anyone prone to stomach upset, palpitations, or anxiety should start with a smaller amount.
In some people, coffee on an empty stomach can trigger heartburn, nausea, or increased bowel activity. Having it with food or choosing a gentler brew may help if this happens.
In usual amounts, coffee contributes to daily fluid intake and does not typically cause meaningful dehydration. Very high caffeine intake can increase urination, so drinking water throughout the day still matters.
Brewed coffee tastes best soon after preparation. Leaving it at room temperature for too long can make it taste bitter; coffee with milk should be consumed promptly or cooled and refrigerated quickly.
Yes. Freeze brewed coffee in ice-cube trays for use in iced coffee drinks. Freezing does not preserve every aroma note, but coffee cubes help prevent drinks from becoming watery.
An overly fine grind, water that is too hot, over-extraction, or dark-roasted beans can all increase bitterness. A coarser grind, shorter brew time, and appropriate water temperature can produce a smoother cup.
Some compounds in coffee can reduce absorption of iron, especially plant-based iron. People with iron deficiency may wish to have coffee about 1–2 hours away from iron-rich meals or iron supplements.
Caffeine can cause a temporary rise in blood pressure, particularly in people who do not consume it regularly. Those with uncontrolled high blood pressure or heart rhythm concerns should discuss their intake with a healthcare professional.
Coffee is not a detox product or a liver cleanse. Regular coffee drinking has been associated with a lower risk of some liver conditions in research, but it is not a replacement for medical care.
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Nutrition data compiled from USDA FoodData Central and scientific sources.