Calories in Kefir
Kefir is a fermented milk drink made with kefir grains, resulting in a tart, creamy beverage rich in probiotics. It is an excellent source of protein, calcium, and B vitamins, supporting gut health and immunity.

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Common Variations
| Variation | Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 100 ml (103g) | 100 ml (103g) | 57 | 3.1g | 4.4g | 3g |
| 100 g | 100 g | 55 | 3g | 4.2g | 2.9g |
| 1 serving (245 g) | 1 serving (245 g) | 135 | 7.4g | 10.4g | 7.1g |
Health Benefits
Rich in probiotics which promote a healthy balance of gut bacteria.
High in calcium and vitamin K2, which are essential for bone health.
Contains bioactive compounds that have potent antibacterial properties.
Nutrition Tips
- Choose plain kefir to avoid added sugars found in flavored versions.
- Use it as a base for smoothies for a significant probiotic boost.
- It can be used as a healthy substitute for buttermilk in most baking recipes.
- Shake the bottle well before drinking as the liquid can naturally separate.
- Start with small amounts if you are new to fermented foods to allow your gut to adjust.
GAYA Tracking Tip
When logging kefir, ensure you specify if it is plain or flavored, as flavored varieties contain significantly more sugar and calories. If homemade, use the 'Whole Milk' variation for the most accurate estimate.
Frequently Asked Questions
Is kefir lactose-free?+
While not strictly lactose-free, the fermentation process breaks down most of the lactose, making it much easier to digest for people with lactose intolerance.
How does kefir compare to yogurt?+
Kefir is generally more potent than yogurt as it contains a wider variety of probiotic bacteria and yeasts, and it has a thinner, drinkable consistency.
Can I drink kefir every day?+
Yes, drinking kefir daily is safe and beneficial for most people, contributing to improved digestion and a stronger immune system over time.
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