Fact checked by Nick Blackmer

• Experts recommend consuming both fiber and protein for breakfast.
• Fiber helps with digestion, while protein increases satiety and boosts lean muscle mass.
• A quick, drastic increase in fiber can cause digestive discomfort, so it’s best to increase fiber slowly.

Protein supports muscle growth and keeps you full longer, while fiber helps digestion and maintains blood sugar levels. Experts recommend consuming both at breakfast.

The Case For Protein

Eating protein in the morning has been linked to several health benefits.

“Protein promotes feelings of satiety, so it helps you feel fuller for longer, which supports weight management,” said Megan Meyer, PhD, a communication consultant and nutritional immunology researcher based in North Carolina.

Plus, eating more protein at breakfast “supports muscle health by increasing lean muscle mass,” Meyer told Health.

This may be particularly important for people as they age—after people reach their 30s, the body begins to lose 3–5% of muscle mass per decade.

How Much Do You Need Per Day?

Adults in the United States are encouraged to consume 0.8 grams of protein for every kilogram of body weight (about 54 grams for a 150-pound person). Protein should make up about 10–35% of your daily calories.

“If you fill your plate about a fourth with lean protein at breakfast, and the rest of your meals throughout the day, you will be on your way to reaching this goal without overdoing it,” Erin Palinski-Wade, RD, CPT, a New Jersey-based dietitian and author, told Health.

Most people in the U.S. get enough protein overall but fall short in protein specifically from seafood, nuts, soy, and seeds.

Are There Any Downsides?

Before bulking up on protein, make sure you’re getting it from healthy sources.

Processed meats and red meat can be high in saturated fats and sodium, which can negatively affect cardiovascular health, said Palinski-Wade.

Watch how much protein you consume, too. High amounts can “put stress on the kidneys if you already have kidney issues,” she added. “Very high protein diets may also throw off nutrient balance or cause digestive discomfort if they’re not paired with other key nutrients.”

Protein-Rich Foods

Meat, seafood, poultry, beans, nut butters, and milk and dairy products are all good sources of protein.

In the mornings, you can try these high-protein breakfast dishes:

• Huevos rancheros
• Peanut butter and banana toast
• Cottage cheese fruit bowl
• Protein pancakes or waffles
• Black bean breakfast burritos

The Case For Fiber

Similar to protein, fiber has a ton of health benefits, especially first thing in the morning.

For one, consuming fiber helps with digestion by adding bulk to stools and softening them, which helps ease constipation.

While protein may be the winner when it comes to satiety, fiber can also "keep you feeling fuller for longer,” said Meyer.

The benefits have longer-term effects, too. Fiber helps boost your metabolic health by maintaining blood sugar levels and promoting weight management. It also supports heart health by lowering cholesterol and triglyceride levels.

“Fiber also serves as food for the gut microbiome, supporting a diverse and healthy gut flora,” Meyer told Health. This may reduce the risk of irritable bowel syndrome (IBS), inflammatory bowel disease, diabetes, and other issues linked to gut microbiome imbalance.

How Much Do You Need Per Day?

Experts recommend that adults aim for 14 grams of fiber per 1,000 calories consumed, or about 25-38 grams of fiber daily, depending on age and gender.

Estimates suggest that only about 5% of the U.S. population are meeting their fiber goals.

Are There Downsides?

Although fiber is great for your health, consuming too much too quickly can backfire. 

“A sudden jump in fiber can cause bloating, gas, or digestive discomfort. And if you’re not drinking enough fluids, very high fiber intakes can sometimes lead to constipation—or in rare cases, even blockages,” Palinski-Wade said.

Because fiber can change the way your body absorbs certain nutrients, “increase your fiber slowly over time and make sure to increase your fluid intake as you increase fiber,” she said. “I recommend increasing by just a few grams every few days.”

Fiber-Rich Foods

There are many foods high in fiber, including oats, apples, pears, lentils, berries, whole wheat, and chia seeds.

When it comes to high-fiber breakfast options in particular, you can try:

• Avocado toast with hemp seeds
• Chia pudding
• Berry smoothie with flax seeds
• Chickpea and sweet potato hash
• Coconut flour pancakes

The Real Win? Have Both at Breakfast

“When it comes to breakfast, fiber and protein are a power duo,” Palinski-Wade said. “Fiber helps keep digestion and blood sugar on track, while protein is key for staying full, supporting muscle, and boosting metabolism.”

Focusing on just one nutrient makes your mornings simpler, but experts agree it's better to have both.

The easiest strategy is to find fiber-rich and protein-rich foods that naturally pair together, Palinski-Wade suggested. For example:

• Mix Greek yogurt with chia seeds, flaxseeds, or berries: Yogurt is a great protein-rich base you can top with seeds, nuts, and fruit, all of which are high in fiber.
• Add avocado to eggs: Eggs provide protein, and avocado packs fiber.

Or, Meyer added, prioritize foods that have high amounts of both nutrients. Her go-to is pistachios. One serving (30 grams) offers over 6 grams of protein and 2 grams of fiber.

Other foods that contain both protein and fiber include:

• Oats
• Whole wheat toast
• Nuts
• Lentils
• Beans

“I would recommend prioritizing foods with at least 2-3 grams of fiber and 5-10 grams of protein. Bonus if a food hits both of those numbers,” said Meyer.

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Kristina Dawson