5 Almond Milk Benefits and 5 Side Effects

Short answer: Almond milk is a low-calorie, dairy-free beverage made by blending almonds with water and straining out the solids. Compared with cow milk, it has far less protein (about 1 gram per cup versus about 8 grams in cow milk) and fewer natural calories, but fortified versions provide comparable calcium and vitamin D⁽¹⁾. It suits people with lactose intolerance, dairy allergy, or a vegan pattern. It is not nutritionally equivalent to cow milk, is a poor primary drink for infants and toddlers, and some brands contain carrageenan and gums that a subset of people find irritating. High-oxalate almond intake may matter for people prone to calcium oxalate kidney stones.

This guide covers what almond milk actually delivers, what it does not, and how to choose a version that fits your goals and health situation.

What almond milk actually is

Almond milk is produced by soaking raw or lightly roasted almonds, blending them with water, and straining out the pulp. The resulting liquid is naturally thin and mildly nutty. Commercial almond milk is usually made from a very small ratio of almonds to water (often 2 to 4% almond content by weight), then thickened with gums, sweetened or left unsweetened, and fortified with calcium, vitamin D, vitamin E, B12, and sometimes protein.

Because most of the almond solids (and therefore most of the protein, fat, and fiber) are strained out, almond milk is not just liquefied almonds. A cup of raw almonds contains about 20 grams of protein and 14 grams of fiber; a cup of commercial almond milk provides about 1 gram of protein and 1 gram of fiber. Any additional nutrition on the label comes from fortification, not from the almonds themselves.

Common almond milk types

• Unsweetened almond milk: About 30 to 40 calories per cup, less than 1 g sugar, fortified with calcium and vitamin D.
• Sweetened almond milk: About 60 to 100 calories per cup, 7 to 16 g added sugar.
• Vanilla or chocolate flavored: Usually sweetened; check label.
• Barista blends: Higher fat and often gum content for steaming, sometimes with pea protein added.
• Homemade almond milk: Higher almond ratio, no fortification, no additives.

Nutritional profile at a glance

A typical 1-cup (240 ml) serving of unsweetened commercial almond milk provides approximately:

• Calories: 30 to 40
• Protein: 1 g
• Fat: 2.5 to 3 g (mostly monounsaturated)
• Carbohydrate: 1 to 2 g
• Fiber: less than 1 g
• Calcium (fortified): 450 mg, about 35% of the Daily Value
• Vitamin D (fortified): 2.5 to 4 mcg, about 15 to 25% of the Daily Value
• Vitamin E: about 5 mg, about 35% of the Daily Value (naturally present, plus fortification)
• Vitamin B12 (some brands): 3 mcg
• Sodium: 150 to 180 mg

The most useful comparison is with cow milk, which per cup delivers about 150 calories, 8 g protein, 8 g fat, 12 g carbohydrate (naturally occurring lactose), 300 mg calcium, and 100 to 125 IU vitamin D (in fortified US milk). A 2018 review by Vanga and Raghavan compared plant-based milks side by side with cow milk and made the same point: fortified almond milk matches cow milk on calcium and vitamin D but not on protein⁽¹⁾.

Real benefits of almond milk

1. Lactose-free and dairy-free

This is the primary reason most people switch. Almond milk contains no lactose and no dairy protein, so it is suitable for people with lactose intolerance, IgE-mediated cow milk allergy, or those following a vegan pattern.

2. Low in calories

Unsweetened almond milk provides about a quarter of the calories of whole cow milk per cup. For people trying to reduce liquid calories, especially in coffee, cereal, or smoothies, this is a genuine advantage.

3. Neutral for blood sugar (unsweetened only)

With less than 2 grams of carbohydrate per cup, unsweetened almond milk has a minimal effect on blood glucose and is a reasonable choice for people with type 2 diabetes, prediabetes, or on a low-carbohydrate eating pattern. Sweetened versions, however, can carry 15 grams or more of added sugar per cup and do not qualify.

4. Fortification-based calcium and vitamin D delivery

Most commercial almond milk in the US is fortified so that one cup provides 30 to 35% of the Daily Value for calcium and 15 to 25% for vitamin D. For people who otherwise avoid dairy, this is one of the easier ways to reach recommended calcium intake.

5. Naturally rich in vitamin E

Almonds are a top food source of alpha-tocopherol (vitamin E), and this partially survives processing. One cup of almond milk supplies about a third of the daily vitamin E target, which supports antioxidant defense.

Honest limits and side effects

1. Low protein (this is the big one)

One cup of almond milk provides about 1 gram of protein, versus 8 grams in cow milk and 8 grams in soy milk. For a healthy adult who eats mixed meals, this is not a problem. It becomes a real issue in three groups:

• Infants and toddlers: Almond milk should not replace breast milk or infant formula, and it should not be a primary “milk” for children under 5 who need the protein, fat, and calories in cow milk or a comparable substitute. Cases of malnutrition, including kwashiorkor, have been documented in infants fed almond milk as a substitute for formula.
• Older adults whose overall protein intake is already low, especially those trying to preserve muscle mass.
• Athletes or people in recovery from illness who rely on liquid nutrition for protein.

Fix: pair almond milk with a protein-rich food (Greek yogurt, eggs, tofu, beans, whey) or choose soy milk if you need liquid protein.

2. Added sugar in flavored varieties

The original blog rightly flagged this. Sweetened, vanilla, and chocolate almond milks often carry 7 to 16 grams of added sugar per cup, which pushes them from a healthy substitute toward a sweetened beverage. Choose “unsweetened” on the label if blood sugar or added sugar reduction is your goal.

3. Additives: carrageenan, gellan gum, guar gum, locust bean gum

Commercial almond milk uses gums and thickeners to keep the mixture smooth. Most of these are considered safe by the US Food and Drug Administration and the European Food Safety Authority for the general population. In some people, especially those with irritable bowel syndrome or inflammatory bowel disease, carrageenan and guar gum can worsen gas, bloating, and diarrhea. If your gut reacts to a certain brand, try one made without gums (Elmhurst 1925, Malk, or homemade are common examples).

4. Nut allergy

Almond milk is not safe for people with tree nut allergies. It is a common trigger and can cause reactions from hives to anaphylaxis. If you have a severe tree nut allergy, soy or oat milk is a safer alternative, but check for facility cross-contamination on the label.

5. Not a good fit for infants

Almond milk is not appropriate as a replacement for breast milk or infant formula in the first year of life, and it is not a good primary “milk” for a toddler. The American Academy of Pediatrics and the US Dietary Guidelines are clear that dairy-free milk substitutes for young children should be selected with a pediatrician’s input and typically be a fortified soy milk if a dairy alternative is needed.

6. Kidney stones (calcium oxalate type)

Almonds are naturally high in oxalate. Whole almonds contain roughly 470 mg of oxalate per 100 g. Most oxalate stays in the pulp during processing, but small amounts remain in commercial almond milk, and homemade almond milk that includes some pulp can carry more. For adults with a history of calcium oxalate kidney stones (the most common type), high daily almond intake is a documented dietary risk factor. Occasional use is fine, but if you are stone-forming, ask your urologist or dietitian whether almond milk fits your low-oxalate plan.

7. Thyroid and iodine consideration

Almonds are mild goitrogens, meaning they contain compounds that can interfere with iodine uptake at very high intake in iodine-deficient people. In a normal Western diet, this is not a problem. If you avoid dairy (a common iodine source) and also eat large amounts of raw goitrogenic foods (raw cruciferous vegetables, soy, almond milk in high volume), consider whether your iodine intake is adequate; iodized salt or seafood usually covers it.

8. Not high in antioxidants once strained

Most of the antioxidant content of almonds sits in the skin and pulp, which are strained out. The vitamin E is what remains. Do not treat almond milk as an “antioxidant beverage.”

9. Environmental footprint

Almond production requires large amounts of water, particularly in California, which produces most of the US supply. Almond milk still typically has a lower total environmental footprint than cow milk on a per-liter basis, but if water use is a concern for you, oat milk generally scores better.

Almond milk vs cow milk vs other plant milks

Quick comparison per cup, unsweetened:

• Cow milk (whole): 150 kcal, 8 g protein, 8 g fat, 12 g carb, 300 mg calcium (fortified in most US milk), 8 essential amino acids in balanced form.
• Cow milk (skim): 80 kcal, 8 g protein, 0 g fat, 12 g carb, 300 mg calcium.
• Almond milk (unsweetened): 30 to 40 kcal, 1 g protein, 3 g fat, 1 g carb, 450 mg calcium (fortified).
• Soy milk (unsweetened, fortified): 80 kcal, 7 g protein, 4 g fat, 4 g carb, 300 mg calcium. The plant milk closest to cow milk on protein.
• Oat milk (unsweetened): 90 to 120 kcal, 3 g protein, 5 g fat, 16 g carb, 350 mg calcium (fortified).
• Coconut milk beverage (unsweetened): 40 kcal, 0 g protein, 4 g fat, 1 g carb, fortified calcium varies.

If protein matters most, choose soy. If calorie reduction and neutral flavor matter most, choose unsweetened almond. If oat-based texture and creaminess in coffee matter, choose oat but note the higher carbohydrate and calorie load.

How to use almond milk well

• Default to unsweetened. Sweetened almond milk turns a low-calorie substitute into a beverage that behaves more like a soft drink for blood sugar.
• Check the fortification. Not all brands add calcium, vitamin D, and B12. If you are dairy-free by preference, fortification is what makes almond milk a reasonable calcium source.
• Do not rely on it for protein. Pair it with eggs, Greek yogurt (if not vegan), soy yogurt, tofu, beans, or a scoop of whey or pea protein in smoothies.
• Read the additive list if you have IBS, IBD, or a sensitive gut. Some brands are made without gums.
• Do not use it for infants or toddlers as a primary milk replacement without pediatric guidance.
• Watch total oxalate load if you are a calcium oxalate stone former.
• Shake before pouring. Almond milk separates.

Bottom line

Almond milk is a useful, low-calorie, dairy-free beverage for adults, especially in coffee, cereal, and smoothies, and when fortified it delivers reasonable calcium and vitamin D. It is not a nutritional equivalent to cow milk on protein, and it is not appropriate as a primary milk for infants or toddlers. Unsweetened versions fit most healthy patterns; sweetened versions push into added-sugar territory. If you have a nut allergy, are managing calcium oxalate kidney stones, or need liquid protein, other options fit better. Choose intentionally, read the label, and pair it with a protein-rich food if it is a substantial part of your day.

Frequently asked questions

Is almond milk healthier than cow milk?

“Healthier” depends on what you are optimizing for. Almond milk has fewer calories and no lactose or dairy protein. Cow milk has about 8 times the protein and a complete amino acid profile. If protein is the priority, cow milk or soy milk is better. If calorie reduction, lactose avoidance, or a vegan pattern is the priority, unsweetened fortified almond milk is a reasonable choice.

Does almond milk have enough calcium?

Only if it is fortified. Most US commercial brands add calcium so that one cup delivers about 450 mg (35% of the Daily Value), which is close to what cow milk provides. Unfortified or homemade almond milk provides very little calcium. Read the label.

Can I give almond milk to my baby?

No, not as a replacement for breast milk or formula. Almond milk lacks the protein, fat, and calorie density that infants need. Cases of malnutrition have been documented. Talk to your pediatrician before introducing any plant-based milk as a primary drink for a child.

Does almond milk cause kidney stones?

Not for most people. But almonds are naturally high in oxalate, and a small amount carries over into commercial almond milk (more into homemade with pulp). If you have a history of calcium oxalate kidney stones, ask your urologist or dietitian about total oxalate load before making almond milk a daily drink.

Is carrageenan in almond milk safe?

Regulatory agencies (FDA, EFSA) consider it safe at the levels used in food. Some people with IBS or IBD report worse gastrointestinal symptoms with carrageenan-containing products. If your gut reacts to a certain brand, try one made without gums or carrageenan.

Is almond milk keto?

Unsweetened almond milk is very low in carbohydrate (about 1 to 2 g per cup) and fits most ketogenic plans. Sweetened, vanilla, and chocolate versions do not.

Can I make almond milk at home?

Yes. Soak 1 cup of raw almonds overnight, drain, blend with 3 to 4 cups of water, and strain through a nut milk bag. Homemade almond milk has more almond content and is free of gums and additives, but it is not fortified with calcium, vitamin D, or B12. Refrigerate and use within 4 to 5 days.

Medical disclaimer: This article is for general information only and is not a substitute for professional medical advice, diagnosis, or treatment. Almond milk is not appropriate as a primary drink for infants or toddlers and should not replace breast milk or infant formula. Do not use almond milk if you have a tree nut allergy. Talk to your clinician or a registered dietitian before making almond milk a substantial part of your diet if you have chronic kidney disease, a history of calcium oxalate kidney stones, low protein intake, an eating disorder, or you are planning intake for a young child. Individual responses vary.