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Lemon Calories
Rich in vitamin C, low calorie, antioxidant source
CALORIES
GI
POTASSIUM
FIBER
Lemon Nutrition Facts
Selected: 100 g
29
KCAL / 100G
Carbs
9.3g
· 84%
Protein
1.1g
· 10%
Fat
0.3g
· 6%
Fiber
2.8g
Lemon Vitamins & Minerals
Vitamins
Vitamin C
53mg · 59% DV
B6
0.08mg · 5% DV
B5
0.19mg · 4% DV
B1
0.04mg · 3% DV
Minerals
Iron
1mg · 6% DV
Potassium ⭐
138mg · 4% DV
Calcium
26mg · 3% DV
Magnesium
8mg · 2% DV
Lemon Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
Is Lemon Processed?
NOVA 1
Unprocessed
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.
Does Lemon Contain Allergens?
No known major allergens
Which Diets Is Lemon Good For?
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Lemon Fat Profile
SATURATED
0.04g
MONOUNSATURATED
0.01g
POLYUNSATURATED
0.09g
Omega 6:3 ratio 1.5:1
Below the ideal 4:1 — a good omega balance.
Foods Similar to Lemon
Lemon — Frequently Asked Questions
How should lemon be stored after cutting?
Cut lemon keeps best in the fridge, wrapped or sealed to limit air exposure. Left uncovered, it dries out faster and loses aroma.
Is drinking lemon juice the same as eating the whole lemon?
Not quite. Drinking the juice gives you the flavor and acidity, but eating the pulp as well helps you get the fruit’s fiber.
Does lemon juice lose vitamin C if it sits too long?
Yes, vitamin C can gradually decline when lemon juice is exposed to air, light, and heat. Freshly squeezed juice is generally the better option if you want maximum freshness.
Does adding lemon to hot water reduce its benefits?
Very high heat can reduce some heat-sensitive compounds. Warm water is usually a better choice than boiling-hot water.
Is lemon on an empty stomach suitable for everyone?
No. People with reflux, gastritis, or a sensitive stomach may find it irritating, especially first thing in the morning.
Can lemon harm tooth enamel?
Yes, frequent direct exposure to acidic lemon juice can wear down enamel over time. Using a straw for lemon drinks and rinsing with plain water afterward can help.
Why is lemon used in fish and meat marinades?
Its acidity brightens flavor and can slightly soften the surface texture. If left too long, though, it can make fish especially turn mushy.
Can lemon help stop cut fruit from turning brown?
Yes, lemon juice is commonly used on foods like apples, pears, bananas, and avocado. Its acidity helps slow oxidation, so the cut surface stays lighter for longer.
Can lemon cure a cold by itself?
No, lemon does not cure a cold on its own. It can be a useful part of fluids and meals, but it is not a replacement for medical care when needed.
Can lemon be frozen?
Yes, lemon can be frozen as slices, juice, or zest. The texture softens after thawing, so frozen lemon is usually best for cooking, dressings, or drinks.
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Nutrition data compiled from USDA FoodData Central and scientific sources.