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Power Up with Plants: Best Protein Sources for Vegetarians
Reviewed by Dr. Mitra Ray, PhD
If you've ever gone vegetarian — or are simply trying to eat less meat — you've probably heard the question: "But where do you get your protein?" It's a fair one. Protein is essential for muscle maintenance and growth, immune health, energy production, and so much more. The good news is that plant-based protein sources are more varied, complete, and satisfying than most people realize.
Whether you're a lifelong vegetarian, exploring a more plant-forward diet, or simply looking to diversify your protein intake, this guide covers the best vegetarian protein options — and how to make sure your body is getting everything it needs.
Why Protein Matters (and How Much You Actually Need)
Protein is made up of amino acids — the building blocks your body uses to build and repair tissue, support muscle function, produce enzymes, and keep your immune system running. There are 20 amino acids in total, nine of which are considered "essential" because your body can't make them on its own. You have to get them through food.
The general recommendation for most adults is around 0.8 grams of protein per kilogram of body weight per day, though active individuals and those looking to build or maintain muscle may need more. For vegetarians, the key isn't just quantity — it's quality and variety. That's where smart food choices (and the right complementary nutrition) come in.
Top Plant-Based Protein Sources for Vegetarians
1. Soy (Tofu, Tempeh, Edamame)
Soy is the gold standard of plant-based protein sources — and for good reason. It's the only vegan protein that naturally provides all nine essential amino acids in amounts comparable to animal protein. That makes it a "complete" protein, which is relatively rare in the plant world. Tofu and tempeh are incredibly versatile in the kitchen, while edamame makes a simple, satisfying snack. Aim to incorporate some form of soy into your meals several times a week.
2. Legumes (Lentils, Chickpeas, Black Beans)
Legumes are a cornerstone of vegetarian protein. Lentils deliver around 18 grams of protein per cooked cup, while chickpeas and black beans offer roughly 15 grams. Beyond protein, they're also packed with dietary fiber, complex carbohydrates, iron, and folate — making them one of the most nutritionally dense foods you can eat. They're also affordable, shelf-stable, and incredibly easy to cook with.
3. Quinoa
Often mistaken for a grain, quinoa is technically a seed — and it's one of the few plant foods that qualifies as a complete protein. With about 8 grams of protein per cooked cup, it's not the highest-protein option on this list, but its complete amino acid profile makes it particularly valuable for vegetarians. Use it as a base for grain bowls, mix it into salads, or serve it alongside roasted vegetables.
4. Nuts and Nut Butters
Almonds, peanuts, cashews, and their respective butters are practical, portable sources of protein for vegetarians. A couple of tablespoons of peanut butter provides around 7–8 grams of protein, plus healthy fats and fiber. While nuts are calorie-dense, they're also remarkably filling — making them a smart choice for sustained energy between meals.
5. Seeds (Hemp, Chia, Pumpkin)
Seeds punch well above their weight when it comes to nutrition. Hemp seeds are a complete protein with around 10 grams per 3-tablespoon serving. Pumpkin seeds offer roughly 9 grams per ounce. Chia seeds are lower in protein but high in omega-3 fatty acids and fiber. Sprinkle any of these on yogurt, oatmeal, or salads for an easy, nutrient-dense boost.
6. Dairy and Eggs (for Lacto-Ovo Vegetarians)
If your version of vegetarian includes dairy and eggs, you have easy access to two of the most bioavailable protein sources available. Eggs are a complete protein, and Greek yogurt, cottage cheese, and milk are all excellent options that also deliver calcium, Vitamin D, and B vitamins. These are particularly helpful for vegetarians who are still building out a well-rounded plant-based protein routine.
The Challenge: Getting a Complete Amino Acid Profile
Most plant proteins are "incomplete" — meaning they're low in one or more essential amino acids. This doesn't make them less valuable, but it does mean variety matters. The classic strategy is to combine complementary proteins throughout the day — for example, rice and beans, or hummus and whole grain pita — so your body gets the full spectrum of amino acids it needs.
The other strategy? Lean on complete plant proteins like soy, quinoa, and hemp — and consider how a well-formulated plant-based nutrition shake can help fill in the gaps on busier days.
Juice Plus+ Complete Shakes: More Than a Protein Shake
Juice Plus+ Complete Shakes are a balanced, plant-powered nutrition shake designed to provide the nourishment your body needs — and they go well beyond protein alone.
At the core is high-quality soy protein — the only vegan protein that provides all nine essential amino acids in amounts comparable to animal protein. This is complemented by a blend of chickpea, rice, and pea proteins for added diversity and nutritional balance. Each serving delivers 14 grams of protein (Vanilla) or 13 grams (Chocolate), making it a meaningful contribution to your daily protein for vegetarians.
A Full Nutritional Picture
Complete Shakes deliver balanced, plant-powered nutrition that complements your diet across multiple dimensions:
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Protein contributes to the growth and maintenance of muscle mass
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7 g of dietary fiber — both soluble and insoluble — to support satiety and steady digestion. A high intake of dietary fiber and protein can promote a feeling of fullness
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B vitamins (Thiamin, Riboflavin, Niacin, B6, B12) contribute to energy-yielding metabolism and the reduction of tiredness and fatigue
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Vitamins D, C, B6, B12, and Iron all contribute to the function of the immune system
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Calcium and Vitamin D contribute to the maintenance of bones and muscle function
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Vitamin C contributes to collagen formation for the function of skin, blood vessels, bones, and cartilage
Clean, Convenient, and Versatile
At only 140 calories per serving, with low fat, Complete Shakes are vegan, plant-based, gluten-free, and made without GMO ingredients. They're certified for quality and safety by NSF and certified Kosher — and made without synthetic sweeteners, colors, or flavors.
Designed to be easy to digest and genuinely versatile, Complete Shakes fit seamlessly into your day — whether as part of breakfast, a post-workout refuel, or a healthy snack. They're a conventional food (not a dietary supplement or meal replacement), so think of them as an easy, on-the-go nutrition option to complement your existing meals.
Building a Balanced Vegetarian Plate
Getting enough protein for vegetarians isn't about obsessively tracking every gram — it's about building consistent habits around varied, nutrient-dense foods. Here are a few practical principles to keep in mind:
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Include a protein source at every meal — legumes, tofu, eggs, dairy, nuts, or seeds
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Prioritize variety to cover your full amino acid profile throughout the day
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Don't neglect iron, B12, calcium, and Vitamin D — nutrients that vegetarians sometimes fall short on
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On busy days, a balanced plant-powered shake can help you complement your diet without compromising on nutrition
Plants Have Everything You Need
The plant kingdom is rich, varied, and more than capable of meeting your protein needs — when you know where to look and how to combine your choices well. Whether you're building meals around lentils and quinoa or reaching for a Juice Plus+ Complete Shake on a hectic morning, the goal is the same: nourishing your body with the quality nutrition it deserves, every single day.
This professional is affiliated with Juice Plus+ and may receive commissions or other compensation from product sales made within their organization. Any reference to professional credentials is provided for identification purposes only and should not be interpreted as a health or medical endorsement of Juice Plus+ or its products by any authority or institution. The views and opinions expressed are those of the professional and do not necessarily reflect the official position of Juice Plus+. Content is for informational purposes only and is not intended to provide or replace care or advice from a healthcare professional. Results may vary. Individual experiences and outcomes can differ based on factors such as health status, diet, and lifestyle. Always consult your healthcare provider before using any nutritional products or starting a new health program.
