With the explosion of diverse milk options available today, choosing the right one for your health goals, especially weight loss, can be confusing. From traditional cow's milk to a plethora of plant-based alternatives, each type boasts a unique nutritional profile. This article provides a detailed overview of various milk options, examining their nutritional content, potential health benefits, and suitability for weight loss.
Understanding the Milk Landscape
The dairy aisle is no longer exclusive to cow's milk. Plant-based milks, including nut and seed milks, pea milk, oat milk, soy milk, coconut milk, and rice milk, have gained significant popularity. Each type of milk has a different profile of nutrients, all of which are important to maintaining health when consumed in moderation. Understanding these differences is crucial for making informed choices that align with your individual needs and dietary preferences.
Cow's Milk: The Traditional Choice
Cow's milk is the most commonly consumed dairy milk and a good source of high-quality protein. It's naturally rich in calcium, B vitamins, and many minerals. It’s also often fortified with vitamins A and D, making it a very nutritious food for both children and adults. Cow's milk is available in various fat percentages, including whole, reduced-fat (2%), low-fat (1%), and skim.
- Nutritional Value: A 1-cup (244 g) serving of 3.7% whole milk provides 156 calories, 8 g of protein, 11 g of carbs, 9 g of fat, 29% of the Daily Value (DV) of calcium, 30% of the DV of riboflavin, 32% of the DV of phosphorus, 36% of the DV of vitamin B12, 9% of the DV of selenium, and 8% of the DV of potassium.
- Potential Benefits: Some research suggests that cow’s milk is the best milk source of protein, healthy fats, and micronutrients. Studies suggest that both low-fat or whole milk can positively affect weight loss efforts. One meta-analysis states drinking milk in combination with calorie restriction may facilitate short-term weight loss. The study states that milk consumption is often associated with better overall nutrition and less intake of sugar-sweetened beverages, like soda and fruit juice.
- Considerations: Cow’s milk can be allergenic for some. The protein in cow’s milk makes it one of the most common food allergens. Most children outgrow it, but some people have a lifelong allergy and need to avoid this beverage and foods containing it. Additionally, an estimated 65% of the world’s population has some degree of difficulty digesting lactose, a type of sugar in cow’s milk, leading to lactose intolerance.
Plant-Based Milk Alternatives
For individuals with lactose intolerance, dairy allergies, or those following a vegan lifestyle, plant-based milk alternatives offer a diverse range of options.
Soy Milk
Soy milk is a plant-based milk product. Nutritionally, soy milk is closest to cow’s milk. This is partly because soybeans are an excellent source of complete protein and soy milk is fortified to closely resemble cow’s milk. Unsweetened and unflavored soy milk has a similar amount of protein and calories as dairy milk, but the type of fat it contains is polyunsaturated instead of saturated.
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- Nutritional Value: A 100-g serving of unsweetened soy milk provides 38 calories, 3.5 g of protein, 1.3 g of carbs, 2 g of fat, 16% of the DV of vitamin B12, 10% of the DV of calcium, 6% of the DV of riboflavin, 5% of the DV of vitamin D, and 10% of the DV of phosphorus.
- Potential Benefits: Soy milk is a great option if you avoid dairy but want a high protein milk beverage. Research suggests that consuming soy milk may have several health benefits, such as improving cholesterol and blood pressure levels. Furthermore, despite claims that soy may increase breast cancer risk because it mimics estrogen in the body, research suggests that soy products may actually reduce the risk of cancer.
- Considerations: Most soybeans grown in the United States are genetically modified to resist the herbicide glyphosate. Some brands produce organic soymilk, which is made from non-genetically modified organism (non-GMO) soybeans and free from conventional pesticides and herbicides.
Almond Milk
Almond milk is made by soaking almonds in water and then blending and straining away the solids. It’s a tasty nondairy milk alternative for people who either can’t tolerate or choose not to drink dairy milk, but it’s not safe if you have a tree nut allergy. Almond milk is another example of a plant-based milk product. It typically has fewer calories than other milk products, but that is because it also has significantly less protein. However, like soy milk, it also has more calcium than dairy. Most of its fat comes in the form of monounsaturated fat, which is a very heart-healthy fat.
- Nutritional Value: On average, an 8-ounce (240-mL) serving of unsweetened almond milk provides 41 calories, 1 g of protein, 2 g of carbs, and 3 g of fat.
- Potential Benefits: Unsweetened almond milk is low in calories and much lower in carbohydrates than cow’s milk, making it a good choice for a lower-carb diet.
- Considerations: It’s low in protein and many other nutrients. Many brands are fortified with calcium and vitamins A and D, but the amounts can vary by brand. Some brands also contain additives like carrageenan to thicken and prevent separation. Some animal research suggests that carrageenan promotes intestinal inflammation and may damage the gut microbiome. However, more research in humans is needed to fully understand the impact of carrageenan.
Oat Milk
Oat milk is made by soaking whole oats. It’s one of the most popular and fast-growing cow’s milk alternatives in the world. Oat milk is easy to froth, which makes it popular in coffee.
- Nutritional Value: An 8-ounce (240-mL) serving of Oatly oat milk provides 120 calories, 3 g of protein, 16 g of carbs, 2 g of fiber, 5 g of fat, 50% of the DV of vitamin B12, 45% of the DV of riboflavin, 25% of the DV of calcium, and 20% of the DV of phosphorus.
- Potential Benefits: Oat milk is naturally sweet from the oats and high in carbs. It also contains soluble fiber, which makes it creamier. Oat milk also contains a compound called Avns, which may have properties that can fight inflammation, oxidative stress, and allergic responses. Oat milk has more fiber than most plant milks.
- Considerations: Due to the manufacturing process, very few of the healthy compounds in oats make it into the milk. Watch out for oat milks that include sweeteners, oils, thickening agents, emulsifiers, stabilizers, or preservatives.
Hemp Milk
Hemp milk is made from ground, soaked hemp seeds, which are high in protein and omega-3 and omega-6 fatty acids.
- Nutritional Value: Hemp milk provides 60 calories, 3 grams (g) of protein, 0 g of carbs, 5 g of fat, 25% of the Daily Value (DV) of phosphorus, 20% of the DV of calcium, 15% of the DV of magnesium, and 10% of the DV of iron.
- Potential Benefits: According to a 2018 review, hemp milk may help lower cholesterol levels and thyroid hormones. The authors also note that because hemp milk doesn’t contain lactose, it may be a nutritious alternative to cow’s milk and several plant-based milks. Hemp milk is virtually carb-free.
- Considerations: Some brands add sweeteners and added sugars. Not only do these increase the carb content, but added sugars are also associated with several chronic conditions, such as obesity, heart disease, and high blood pressure (hypertension), among others. Check the ingredient label and buy hemp milk without added sugar. Sugar may be listed on the ingredient label as brown rice syrup, evaporated cane juice, or cane sugar.
Coconut Milk
Coconut milk is squeezed from the white flesh of a coconut. It has a pleasant flavor, and it’s a good nondairy milk alternative that’s safe if you have a tree nut allergy.
- Nutritional Value: An 8-ounce (240-mL) serving of unsweetened coconut milk provides 46 calories, 0 g of protein, 1 g of carbs, and 4 g of fat.
- Potential Benefits: Most coconut milk packaged in cartons is blended with water to give it a consistency similar to that of cow’s milk. Coconut milk is a bit higher in fat than other plant milks, but the medium-chain triglycerides (MCTs) in coconuts are linked to some heart health benefits, such as higher HDL (good) cholesterol levels.
- Considerations: It has even less protein than almond milk, but many brands are fortified with nutrients like vitamins B12, D, and A, as well as some minerals. On the other hand, canned coconut milk is usually intended for culinary purposes. It tends to be higher in fat, is unfortified, and has a much more distinctive coconut flavor.
Rice Milk
Rice milk has much less protein than several other plant-based milks. However, it tends to have more manganese and selenium.
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- Nutritional Value: One cup of plain rice milk contains 115 calories, 0.7 g of protein, 12.9 g of sugar, 2.4 g of total fat, 288 mg of calcium, 65.9 mg of potassium, and 0.7 g of fiber.
- Considerations: Store-bought rice milk often contains added oils, salt, and sweeteners.
Milk and Weight Loss: Key Considerations
When it comes to weight loss, the type of milk you choose can play a role, but it's essential to consider the bigger picture.
Calorie Content
Choosing a milk with lower calories can contribute to a calorie deficit, which is crucial for weight loss. Almond milk, with just 30 calories per glass, is a good choice for those watching their calories.
Protein Content
Protein plays a role in hunger management, and it reduces the hormones that make you feel hungry. Milk with a higher protein content, such as cow's milk and soy milk, can help you feel fuller for longer, potentially reducing overall calorie intake.
Added Sugars
Many flavored or sweetened milk alternatives contain added sugars, which can hinder weight loss efforts. Checking the Nutrition Facts label is the best way to find a taste you like with minimal added sugars.
Overall Diet
Milk is only one part of your diet. Whichever milk you drink, it’s important to pair it with a balanced diet that consists of nutrient-dense whole foods.
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Specific Recommendations for Weight Loss
- Skim milk: Nonfat skim milk is the best choice for most adults. It’s tough to beat dairy milk for balanced nutrition.
- Low-fat dairy: Skim or 1% milk contains all the protein, vitamins and minerals that whole milk contains, but it has much less saturated fat. This type of milk is typically more heart-healthy than full-fat milk. It is ideal for someone who often runs low on protein intake, consumes a lot of dairy products or is looking to cut down on saturated fat intake.
- Almond milk: For those who are watching their calories but still want the milky taste for smoothies, baked goods, cereal or the like, almond milk is a good choice.
- Soy milk: With about 90 calories and 8 grams of protein per 8-ounces, soy milk offers the protein and calories to manage hunger without any added sugar or fat. Use soy milk in post-workout beverages to aid in muscle recovery or midday snacks to mitigate hunger and prevent overeating.