Protein, Simplified: What It Is and What Your Body Actually Needs

Protein is everywhere in wellness conversations right now — protein goals, protein sources, protein powders. But before any of that, there's a foundation most people skip: what protein actually is, and how your body uses it.

Let's simplify it.

What Protein Actually Is

Protein is one of three macronutrients your body needs in large amounts, alongside carbs and fats. It's made of amino acids — the building blocks your body uses to repair tissue, produce hormones and neurotransmitters, support immunity, and build collagen and keratin.

Your body works with 20 amino acids. It can make 11 on its own. The other 9 are essential — meaning they must come from food. This is the real foundation of the protein conversation: it's not just about grams, it's about whether a food supplies those 9 aminos, and whether your body can actually use them.

Complete vs. Incomplete Proteins

A complete protein contains all 9 essential amino acids in meaningful amounts. Most animal foods qualify — eggs, fish, meat, poultry, dairy. So do a few plant foods: quinoa, soy (tofu, tempeh, edamame), buckwheat, chia, hemp seeds.

An incomplete protein is low in one or more essential aminos. Many plant foods fall here alone — beans, lentils, grains, nuts, seeds. That doesn't make them lesser; it means they need variety and pairing.

West African cuisine has always understood this: black-eyed peas with rice, egusi with fufu, lentils with grains. These aren't random pairings — they're complementary proteins, completing each other's amino acid profile. Your ancestors were practicing nutrition science before it had a name.

Bioavailability: The Number That Actually Matters

Bioavailability is how much of a nutrient your body can actually absorb and use — because containing protein and using protein aren't the same thing.

The DIAAS score (Digestible Indispensable Amino Acid Score) measures exactly this: a food's amino acid content plus how well your body digests and uses it. The takeaway: you don't just need protein — you need protein your body can use.

Why Preparation Matters

Plant proteins are deeply nourishing, but preparation changes their digestibility. Soaking, sprouting, fermenting, and cooking all make legumes, grains, nuts, and seeds easier for the body to break down and absorb. This is why your grandmother soaked beans overnight — the wisdom was always there.

How Much Protein Do You Need?

Your body doesn't store amino acids the way it stores fat or carbs, so consistent daily intake matters.

• Sedentary adults: ~0.8g per kg of bodyweight
• Active women: 1.2–1.6g per kg
• Strength training, postpartum, perimenopause, injury/surgery recovery: may need the higher end or more

These are general guidelines, not a prescription — your needs depend on age, activity, hormones, digestion, and goals.

Your Protein Foundation

Build from whole, minimally processed foods first.

• Animal-based: eggs, fish, poultry, meat, yogurt, cheese, dairy — generally complete and highly bioavailable. Focus on quality, moderation, and pairing with fiber.
• Plant-based: beans, lentils, chickpeas, black-eyed peas, soy, quinoa, oats, rice, nuts, seeds, potatoes, vegetables — support your needs through variety and proper preparation.

Both have a place. The key is knowing how to use them.

The Bottom Line

Protein doesn't have to be confusing. You don't need to chase trends, fear plant protein, over-consume animal protein, or build your plate around supplement marketing.

Understand your amino acids. Understand complete vs. incomplete. Understand bioavailability and preparation. Then build the plate — diverse, bioavailable, culturally rooted, and whole-food first.