Do you find yourself wondering whether your child needs more protein than they’re getting from regular meals?

Protein bars in the lunchbox. Protein powder in smoothies. Protein added to everything from waffles to mac and cheese. If it feels like protein is suddenly everywhere, you’re not imagining it. Increasingly, that messaging is aimed at kids, not just adults.

I take a whole-child, no-fear approach to nutrition: more protein isn’t automatically better. If you want the exact numbers for your child’s age and stage, I built The Protein Guide for Kids, a quick, practical resource with real food lists instead of guesswork.

In this episode, I’m pushing back on one idea in particular: that more protein is automatically better for kids. I share a story from my practice about a teenage competitive athlete who started stacking protein powder into her smoothies, oatmeal, and post-practice shakes and steadily gained weight she couldn’t explain, even though she wasn’t eating any differently otherwise.

I walk through what the RDA actually recommends for kids’ protein needs, what newer “optimal protein” research really means, and the research-backed downsides of overdoing it, especially for younger kids.

The current RDA is about 0.95 grams of protein per kilogram of body weight per day for kids ages four to thirteen, and about 0.85 grams per kilogram for teens fourteen to eighteen, or roughly half a gram per pound. For a 70-pound child, that’s about 30 grams a day: two eggs, a cup of milk, and a turkey sandwich. It’s built with a safety margin already in it, and most kids hit it without anyone tracking a single gram.

Newer research using methods like indicator amino acid oxidation studies suggests the RDA might be a bit conservative for very active school-age kids and teens. But even those studies land in a moderate range. They’re not a justification for stacking protein powder, bars, and fortified foods on top of meals that already contain protein.

I also cover the research-backed downsides of too much protein:

• the “early protein hypothesis” linking higher protein intake in infancy and toddlerhood to higher insulin and IGF-1 and faster weight gain later on
• a 2024 analysis of national U.S. health data showing kids and teens with a higher protein-to-calorie ratio had a higher risk of overweight or obesity
• and that protein-heavy eating can crowd out the fruits, vegetables, and whole grains most kids are already falling short on

I also address the kidney concern directly, because I hear it often: for kids with healthy kidneys, the research doesn’t support too much protein as a real risk. That worry applies mainly to kids who already have kidney disease.

And I draw a clear line for families where the real concern is too little protein, not too much: kids with severe picky eating, ARFID, or an eating disorder. That’s a different conversation, and it deserves individualized support from a pediatric dietitian, not a one-size-fits-all rule of thumb.

For most families, I share what I call the “plate check”: instead of tracking grams, look for a palm-sized portion of a protein source at breakfast, lunch, and dinner most days. If you can spot it, your child is almost certainly covered.

In This Episode, We Cover:

• Why protein is suddenly everywhere – in lunchboxes, smoothies, and even mac and cheese
  
• What the RDA actually recommends for kids’ protein needs, by age
  
• What a day of meeting the RDA actually looks like, in food, not grams
  
• What newer “optimal protein” research says, and what it doesn’t
  
• The research-backed downsides of too much protein, especially for younger kids
  
• Why the kidney-damage concern doesn’t hold up for kids with healthy kidneys
  
• When low protein intake is the real concern: severe picky eating, ARFID, and eating disorders
  
• The “plate check”: one simple way to know your child is already covered
  
• Where to find exact protein targets for your child’s age and stage
  

👉 And if you want to go deeper, be sure to listen to the full episode:

Resources & Links

• The Protein Guide for Kids ($7)
• Group Program: Raise a Child Who Thrives
• Newsletter: The Munch