Adding chia seeds in smoothies is one of the smallest changes you can make to your morning drink, yet it changes a lot. You get extra fiber, plant-based omega-3s and a thicker texture that keeps you full for longer.
This guide covers what chia seeds add, how much to use and whether to soak them first.
After that, it looks at 6 other seeds and nuts worth blending in, so you can match each one to the smoothie you actually like to drink.
Key Takeaways (TL;DR)
- Why chia seeds work: 2 tablespoons deliver about 10g of fiber and around 5g of plant-based omega-3 fatty acids, with a little extra protein.
- How much to add: Start with 1 tablespoon per smoothie and work up to 2 once your digestion adjusts to the extra fiber.
- Soaking is optional: Pre-soaking for 10 to 15 minutes gives a smoother texture, while blending them dry works fine if you drink the smoothie straight away.
- Other seeds to try: Ground flaxseeds add omega-3s, hemp seeds add complete protein and pumpkin seeds add magnesium and zinc.
- Nuts work too: Almonds, walnuts and cashews add healthy fats and creaminess, and walnuts are the richest in omega-3s.
- The easy option: kencko's Reds smoothie already contains chia seeds alongside real strawberries and bananas, and it's ready in 30 seconds without a blender.
Table of Contents
Chia Seeds in Smoothies: at a Glance
Why Add Chia Seeds to Your Smoothie?
Chia seeds are particularly useful when you want to increase the fiber and healthy fat content of an otherwise fruit-focused smoothie.
According to Harvard T.H. Chan School of Public Health, a 1-ounce serving of chia seeds (approximately 2 tablespoons) contains around 140 calories, with 4 grams of protein and 11 grams of fiber. In addition, it also provides unsaturated fats and minerals.
Here's how those nutrients contribute to your smoothie:
1. Provides Plant-Based Omega-3 Fatty Acids
Chia seeds are rich in alpha-linolenic acid (ALA), a plant-based omega-3 your body can only get from food. According to USDA data, a 1-ounce serving contains about 5 grams.
Omega-3s support normal cell function as part of a balanced diet. Your body converts only a small share of ALA into the longer-chain omega-3s EPA and DHA, so a steady supply from food helps.
Adding chia seeds to smoothies offers a practical way to increase dietary ALA intake, which is crucial if you eat relatively fewer omega-3 rich foods.
2. Adds Fiber That Supports Digestive Health
Chia seeds are also a concentrated source of dietary fiber. Two tablespoons provide approximately 10–11 grams, which represents a substantial portion of the recommended daily intake for adults.
They contain both soluble and insoluble fiber. Soluble fiber absorbs water and forms a gel, while insoluble fiber helps add bulk to stool and supports regular bowel movements.
Fiber may also help you feel fuller after eating. This can be useful if you want a smoothie that feels more satisfying than fruit blended with water alone.
However, increasing fiber intake too quickly may cause bloating or digestive discomfort. If you don't regularly eat seeds or other fiber-rich foods, start with a smaller serving.
3. Contributes Protein and Essential Minerals
Alongside fiber and omega-3s, chia seeds also provide approximately 4–5 grams of protein per 2-tablespoon serving. These seeds are also rich in minerals like calcium, magnesium and phosphorus, which contribute to normal bone and muscle function.
The protein content is useful, although a tablespoon of chia won't provide enough to make a fruit smoothie a high-protein meal.
For a more protein-rich combination, you can pair the chia seeds with plain Greek yogurt or soy milk.
That way, you retain the fiber and healthy fats from chia while increasing the smoothie's overall protein content.
4. Helps Create a Thicker, Creamier Smoothie
Chia seeds can also help you adjust the thickness of your smoothie, especially if you're using watery fruits or have added a little too much liquid.
That's because their soluble fiber absorbs liquid and forms a gel around each seed, so the smoothie thickens gradually. You'll notice the difference after 10–15 minutes.
That being said, how much the texture will change really depends on the quantity used. A teaspoon of chia seeds may only thicken the smoothie slightly, while adding more can make it noticeably denser.
The key is to start with a small amount and adjust based on the consistency you prefer.
How to Use Chia Seeds in Smoothies
How Much Chia Seed Should You Add?
Start with 1 teaspoon to 1 tablespoon of chia seeds per smoothie, especially if you're adding them for the first time. This range provides some additional fiber without making the drink excessively thick.
You can increase the quantity once you know how the seeds affect your preferred recipe.
These weights are approximate because measuring spoons can vary.
For a single-serving chia seeds smoothie, 1 tablespoon is a practical amount once you're comfortable with the extra fiber. If you're preparing a larger batch for two people, you could add 2 tablespoons and divide it evenly.
Keep in mind that two tablespoons contribute roughly 10–11 grams of fiber. If you already consume plenty of fiber throughout the day, a smaller serving might be more preferable.
The amount also influences how you prepare the seeds. Larger quantities absorb more liquid, making it worth deciding whether to soak them beforehand.
Should You Soak Chia Seeds First?
No. Chia seeds don't need soaking before you put them in smoothies, provided they're blended with sufficient liquid.
They begin absorbing moisture as soon as they're mixed into the drink.
Soaking them separately is an option though, if you prefer a softer texture or want the smoothie to be thick immediately after blending.
Adding Chia Seeds Without Soaking
For quick smoothies, add whole chia seeds directly to your blender with the fruit and liquid.
They'll begin hydrating during preparation and continue absorbing moisture afterward. This means the smoothie may be thinner immediately after blending than it will be 10–15 minutes later.
It's a convenient method for berry and banana smoothies that already have a creamy consistency.
Soaking Chia Seeds Before Blending
Pre-soaking allows the seeds to develop their gel-like coating before they enter the blender.
Mix 1 tablespoon of chia seeds with approximately 3–4 tablespoons of water or milk. Stir the mixture and leave it for 10–15 minutes until the seeds have softened.
You can then add the hydrated chia to the rest of your ingredients. This method works well if you prefer a thicker smoothie from the start or want the seeds to feel softer.
Which Method Should You Choose?
Both methods work, so make sure to choose based on how much preparation you have and the consistency preferred.
For safety, avoid swallowing dry chia seeds on their own because they can expand when exposed to moisture. Always consume them with enough liquid or incorporated into moist foods.
Once you've chosen a preparation method, you can build the smoothie around fruit flavors you enjoy most.
How to Add Chia Seeds to Smoothies
With your preparation method decided, the next step is putting it into practice.
The 4 steps below show how to add chia seeds in your smoothies for a single serving, no matter if they're added in a dried or soaked format.
Step 1: Choose Your Fruit Base
Start with fruits that complement chia seeds' mild flavor, such as bananas for creaminess or berries for a brighter taste.
For one generous serving, use approximately 1 cup of frozen fruit or a combination of fruit and half a banana.
Step 2: Add Your Liquid and Chia Seeds
Pour ¾–1 cup of water or milk into your blender, followed by 1 teaspoon to 1 tablespoon of chia seeds. If you've soaked the seeds beforehand, add the hydrated mixture instead.
Water produces a lighter drink, while dairy milk or plant-based alternatives generally create a creamier consistency.
Step 3: Blend Until Smooth
Add your fruit and blend until it reaches your preferred consistency.
If you're using whole chia seeds, blend for another 15–30 seconds to help distribute them throughout the mixture.
Add a little more liquid if the smoothie feels too thick.
Step 4: Drink or Allow It to Thicken
Your chia seeds smoothie is ready to drink immediately after blending. For a thicker texture, let it rest in the refrigerator for 10–15 minutes while the seeds continue absorbing liquid.
Stir before drinking if the mixture has thickened unevenly.
Best Seeds and Nuts to Add to Smoothies Beyond Chia
Chia seeds work well for fiber and omega-3 ALA, but there are other seeds and nuts which bring different nutrients and textures to your smoothie as well.
Some contain more protein, while others are particularly useful for their minerals or healthy fats. The right choice depends on what you're hoping to add to the drink.
Keeping that in mind, here's a list of the best seeds and nuts to add to your smoothie:
1. Flaxseeds
Flaxseeds are the closest relative to chia in terms of nutrition - given that they're rich in ALA omega-3s and fiber. They're also a rich source of lignans, which are plant compounds with antioxidant properties.
Unlike chia seeds though, whole flax seeds aren't broken down by your body and pass through mostly undigested.
That's why ground flaxseed, or flax meal, is the best way to use flax seeds in smoothies. One tablespoon contains 37 calories, 2 grams of fiber and 1.6 grams of ALA.
This makes it easy to add both fiber and omega-3s to a smoothie without changing its texture.
- Serving size: 1 to 2 tablespoons of ground flaxseed
- Flavor: Mild and slightly nutty
- Pairs well with: Banana, oats, cinnamon and berries
It is recommended that you store ground flaxseed in the fridge or freezer, since the oils present can turn rancid within a few weeks at room temperature - leading to the flax seeds tasting bitter.
2. Hemp Seeds
Hemp seeds, commonly sold as hemp hearts, are a good choice when protein is your priority. Three tablespoons contain approximately 9–10 grams of protein along with magnesium and unsaturated fats.
Unlike chia, hemp hearts don't form a gel in liquid. Their soft texture blends in smoothly without thickening the drink much.
This makes the addition of hemp seeds in smoothies particularly useful when you want more protein while keeping the consistency relatively light.
- Serving size: 2 to 3 tablespoons
- Flavor: Soft and lightly nutty, similar to pine nuts
- Pairs well with: Spinach, mango and cocoa
Hemp seeds are lower in fiber than chia or flax. If fiber is your goal, pair them in smoothies with a tablespoon of chia for the best of both worlds.
3. Pumpkin Seeds
Pumpkin seeds are another nutritious addition to smoothies, especially if you're looking to add more magnesium, zinc, iron, and plant-based protein. However, their earthier flavor makes ingredient pairing more important than with milder seeds like chia or hemp.
For easier blending, it's best to use shelled, unsalted pumpkin seeds, which also help you avoid adding unnecessary salt to the smoothie.
Raw seeds taste milder, while roasted ones add a stronger nutty flavor.
- Serving size: 1 to 2 tablespoons
- Flavor: Earthy and slightly sweet
- Pairs well with: Pumpkin purée, spinach, banana and cinnamon
When using pumpkin seeds for smoothies, grind them beforehand or use a powerful blender for a smoother texture.
Once blended, a tablespoon works well in a banana-apple smoothie, where the fruit's sweetness offsets their earthy flavor.
4. Almonds
If you want a creamier smoothie, almonds are worth trying. They provide healthy fats, vitamin E, protein, and fiber - while their mild, nutty flavor pairs well with different fruits.
However, whole almonds can be difficult to blend, so almond butter is often a more convenient choice for a smoother texture.
- Serving size: 6–8 almonds or 1 tablespoon of unsweetened almond butter
- Flavor: Mild and nutty
- Pairs well with: Banana, strawberries, dates and cocoa
For example, try adding almond butter to a strawberry-banana smoothie for a richer consistency without overpowering the fruit.
This makes almonds a great option when adding nuts in smoothies, especially if you want extra creaminess alongside healthy fats.
5. Walnuts
If you're looking for another source of plant-based omega-3 ALA, walnuts are another worthy addition. They also provide healthy unsaturated fats, along with some protein and fiber.
Unlike chia seeds, however, walnuts have a richer, slightly bitter flavor that pairs better with naturally sweet ingredients.
- Serving size: Approximately 3–4 walnut halves or 1 tablespoon of chopped walnuts
- Flavor: Rich, nutty and slightly bitter
- Pairs well with: Banana, dates, apples and cinnamon
For example, try blending bananas with milk, chopped walnuts and a pinch of cinnamon. The banana's natural sweetness balances the walnuts' stronger flavor, making this a good breakfast smoothie.
Walnuts are particularly useful if you enjoy chia seeds for their omega-3 content but want a different taste and texture.
6. Cashews
If you prefer thick, creamy smoothies without a strong nutty flavor, cashews are worth trying.
They provide healthy unsaturated fats and minerals like copper, magnesium and zinc, while their mild taste pairs well with both tropical fruits and berries.
- Serving size: 5–8 cashews or 1 tablespoon of unsweetened cashew butter
- Flavor: Mild, slightly sweet and creamy
- Pairs well with: Mango, banana, strawberries and peaches
Whole cashews blend more easily after soaking for 2–4 hours. Cashew butter skips that step and gives a smoother result.
For example, a tablespoon of cashew butter in a mango smoothie adds richness without masking the fruit's sweetness.
If you want nuts in smoothies without any grittiness, cashew butter is the easiest option.
How to Choose the Right Seeds and Nuts for Your Smoothie
With so many healthy smoothie add ins available, the best choice depends on what you want from the finished drink.
If you're trying to increase fiber intake, chia and ground flaxseeds are useful choices. Hemp hearts offer more protein per typical serving, while almonds and cashews are ideal when adding creaminess to your smoothie really matters.
The table below compares all 7 options:
These are suggested starting amounts for one smoothie.
Can You Combine Different Seeds and Nuts?
Yes. Pairing two ingredients balances nutrients and texture.
In a banana smoothie, for example, 1 teaspoon of chia adds fiber and thickness while 1 tablespoon of hemp hearts adds protein. Ground flaxseed with almond butter also pairs fiber and ALA with creaminess.
Still, two is usually enough. More nuts and seeds add fat and calories quickly, so start with one and adjust.
If you have a nut allergy, it might make sense to replace them with seeds, provided they're safe for the allergy and checked for cross-contact.
A Chia Seeds Smoothie Without the Prep: kencko Reds
Every step above assumes you have time to measure seeds, prep fruit and run a blender. On busy mornings, that's usually where the habit of adding chia seeds in smoothies slips.
kencko's Reds smoothie handles that with a strawberry banana blend made from freeze-dried fruit and chia seeds already mixed in.
Each 18g sachet includes:
- Real fruit: Strawberry, banana, apple, raspberry and date, plus a little ginger
- Chia seeds: Plant-based omega-3 ALA and soluble fiber
- Nutrition: 60 calories, 3g of fiber (11% of the Daily Value) and 20% of the Daily Value for vitamin C, with no added sugars
- Prep time: About 30 seconds in a shaker bottle, with no blender needed
To make it, add a sachet to 5–7 ounces of chilled water or milk and shake for 10–15 seconds before consumption.
The 'Reds' sachet also works as a base for other ingredients mentioned in this guide. A tablespoon of hemp hearts or almond butter, for instance, adds protein and creaminess.
On mornings when you don't have time to prep, the Reds range provides much-needed fiber and omega-3 benefits of a chia seed smoothie in less than 30 seconds.
Everything You Need to Know About Chia Seeds in Smoothies
Get Chia Seeds in Your Smoothie in Under 30 Seconds With kencko
If you enjoy chia seeds in smoothies but don't always have time to prepare one, the kencko 'Reds' range makes it easier to keep fruit-based smoothies an integral part of your routine.
Each shelf-stable sachet blends real fruit, chia seeds and apple fiber for 3 grams of fiber per serving. Shake it with water or milk, and it's ready in under 30 seconds.
That makes Reds a practical way to keep real fruit and chia seeds in the mornings, even on your busiest days.
Explore Reds to see the full ingredient list, or start a smoothie subscription to have it delivered to your doorstep every month.
FAQs About Chia Seeds in Smoothies
How much chia seeds should I put in a smoothie?
You should put 1 to 2 tablespoons of chia seeds in a smoothie for the best balance of nutrition and texture. Two tablespoons provide about 10g of fiber and 5g of omega-3s. If you're new to chia, start with 1 tablespoon for the first week or two. This gives your digestion time to adjust to the extra fiber without any bloating.
Do you need to soak chia seeds before putting them in a smoothie?
You don't need to soak chia seeds before putting them in a smoothie, but soaking gives a smoother texture. Stir 1 tablespoon into 3 to 4 tablespoons of liquid and wait 10 to 15 minutes. Dry seeds blend in well too, as long as you drink the smoothie within a few minutes, before it thickens too much to sip comfortably.
What are the best seeds to add to smoothies?
The best seeds to add to smoothies are chia seeds, ground flaxseeds, hemp seeds and pumpkin seeds. Chia and flax add fiber and omega-3s, with 2 tablespoons of chia providing about 10g of fiber. Hemp seeds add about 10g of complete protein per 3 tablespoons. Pumpkin seeds stand out for magnesium, with 37% of the Daily Value in every ounce.
Can you put nuts in a smoothie?
Yes, you can put nuts in a smoothie, either whole, soaked or as nut butter. Almonds, walnuts and cashews work especially well in fruit smoothies. Keep portions to about 1 ounce, or 1 to 2 tablespoons of nut butter, since nuts are calorie-dense. If you use a standard blender, soak whole nuts for 2 to 4 hours first so they blend smoothly.
Do chia seeds lose nutrients when blended?
Chia seeds don't lose nutrients when blended in a smoothie. Their fiber, protein and omega-3 fats stay intact, and breaking seeds down may even make them easier to digest. For the best flavor and texture, consume the smoothie within a day, before the seeds thicken it too much.
Are flax seeds or chia seeds better in smoothies?
Flax and chia seeds both work well in smoothies, but the latter is easier to use since it can be added whole. On the other hand, flax seeds need grinding before your body can absorb their nutrients.
How long do chia seed smoothies last in the fridge?
Chia seed smoothies last about 24 hours in the fridge when stored in a sealed container. Because they keep absorbing liquid, the smoothie will thicken overnight, so stir in a splash of water or milk before consuming.
Can chia seeds in smoothies cause bloating?
Chia seeds in smoothies can cause bloating if you add too much fiber too quickly. Two tablespoons provide about 10–11 grams, more than a third of the 28-gram Daily Value. To avoid this, begin with about 1 teaspoon per smoothie and drink plenty of water, then increase the amount gradually as your digestion adjusts.