Building on our episode on sarcopenia, we go deeper on protein — why midlife demands far more of it than the old guidelines suggested, how to actually hit your targets, and why fiber is the essential partner nobody talks about.
Welcome back to the podcast. Today we're building on our sarcopenia episode to talk in more depth about protein — and we know we talk about protein a lot. We hear from so many people that they've never felt more peer pressure than they're getting in midlife to eat more protein. We're also going to sprinkle in some fiber while we're at it.
There's a lot of buzz about protein right now. Wherever you look on social media, you'll find strong opinions about it. But the way we see it, we got led astray for a long time.
How We Got Here: From the Food Pyramid to a Protein Focus
Back in the '90s, the old USDA food pyramid was essentially built around carbohydrates as its foundation — and that foundation helped lead a lot of people down the path toward the chronic disease processes showing up now.
For those who don't know, there was a big change to the USDA's recommendations at the start of 2026. We'd already shifted once before, from the old food pyramid most of our generation grew up with to "MyPlate," which leaned more on portion control. Now we've moved into a new food pyramid that's essentially the old one turned on its side — with a much greater focus on protein, which is a good thing. We're learning how important protein is for preserving muscle as we age.
The trouble is that many people in this midlife bracket are still operating on the old, broken system, and they're the ones fighting type 2 diabetes and the other chronic conditions that come with it.
Why Protein Matters — Especially in Midlife
At its most basic, protein is the foundation for muscle preservation, full stop. Proteins are made of amino acids in chains of varying lengths, and the body uses them everywhere: as a structural component, as a signaling component for enzymes and hormones, in the immune system through antibody formation, and in nutrient transport (glucose and waste literally get moved around with proteins). Protein makes up and essentially runs everything, which is exactly why it's emphasized so much more now.
Metabolically, it also takes more energy to break protein down, and it's very satisfying — eating protein curbs hunger and cravings.
It matters even more in midlife because muscle protein synthesis starts declining with age. Around 30, our muscles begin to atrophy — that's sarcopenia, averaging about 1% a year if we do nothing about it. The older we get, the more anabolic resistance we develop, meaning it gets harder to build and maintain muscle. So because we're fighting this from both an age-related and hormone-related standpoint, protein needs to be emphasized more just to maintain what we have.
How Much Protein Do You Actually Need?
The older guidelines recommended far less protein than is needed to optimize health, and that's where the new thinking comes in. Optimization looks different for everyone, but we now know higher levels are needed for optimal intake. There's a difference between simply preventing muscle waste and weakening, and actually building, preserving, and increasing muscle.
The old RDA suggested only around 0.36 grams per pound, which is more about basic survival than optimizing health or meaningfully preserving muscle. The target now is much higher — at least double that. We tell our patients that one gram per pound of ideal body weight is an optimal place to aim, though it's genuinely difficult to achieve.
That higher level is really for building muscle, and it has to complement everything else: your lifestyle activity and movement, your hormone levels, and the right exercise and movement programs. A lot of people go to the gym, do their runs or resistance training, but if you're not providing the fuel for your body to build muscle, it's very hard to create it.
Protein and GLP-1 Medications
Because GLP-1s are so widely used today, they're a key part of the protein conversation. When you're on a GLP-1 with a suppressed appetite — sometimes with nausea and delayed gut motility on top of it — protein isn't the thing you naturally reach for. But it needs to be, because when you're operating at such a large caloric deficit, it becomes that much more important.
GLP-1s are good caloric restrictors, but your body doesn't care where it pulls its energy from — it'll take some from fat and some from muscle. That's why, if we're not actively maintaining and building muscle, people on GLP-1s start getting weaker and losing a percentage of their muscle.
Spreading Protein Throughout the Day
There are lots of theories on distribution, but the best approach is to spread your protein out across whatever your feeding window is, ideally with some focused around workout times. The body can only break down roughly 30 to 40 grams of protein at a sitting, so keep that in mind — and that gets tricky when you're cramming intake into a restricted eating window. You have to get creative.
There's also an important difference between men and women here. We're cautious about hard, absolute rules, because everybody is different, but women typically do better with some nutrition or fuel around a workout. That holds for men too, but it seems especially important for women.
The key is spreading it out: don't skip breakfast, and don't stack all your intake into one meal. If a 150-pound person needs close to 150 grams of protein, that's a lot — and short of carrying beef jerky and chicken breast around all day, it's tough to get in.
Whole Foods First — Including Plant-Based
Our preference is for people to get most of their protein from whole foods, then supplement protein and amino acids from other options as needed. Protein supplementation is fine and has its place, but whole foods come first.
This is a good place to note that vegans and vegetarians getting their protein from plant-based options can absolutely make it work — it can be a little harder to hit the targets, but it's doable. You know what's best for your body.
The distinction is between complete and incomplete proteins. Complete proteins contain all nine essential amino acids — the ones our bodies can't make and must get from diet — and the best sources are typically meats. Incomplete proteins are missing some of those essential amino acids. The big one to watch is leucine, the amino acid that signals protein synthesis and the most important building block; you'll see far more of it in meat and animal products.
Animal protein is also more bioavailable. People relying on plant protein need to lean on sources like soy, quinoa, hemp, and tofu, and simply consume more of them to get those essential amino acids. Can you build muscle on plant proteins? Yes — it's just a little harder.
Timing, Bedtime, and the Thermic Effect
One thing worth considering is how close you eat to bedtime. Eating too late can affect sleep and can also cause GI issues like reflux, so be mindful of when you fit your protein in.
Protein is very satiating — it satisfies hunger and lasts longer. Its thermic effect is higher too: you burn more calories digesting protein (roughly 20–30% of its calories) compared with carbohydrates (around 3–10%) and fats (lowest of all, with little caloric cost to digest). That's another benefit of prioritizing protein.
The Family Meal Challenge
Something we hear a lot is that women end up making separate meals — one for themselves and a different one for the family. This isn't specific to protein; it ties into a lot of the lifestyle recommendations around nutrition. Kids' palates are part of it: they want chicken nuggets and PB&J, which isn't optimal for an adult in midlife trying to hit their protein and nutritional requirements.
It's a constant conversation with patients — finding time to get their protein in while keeping the family fed, and it gets even harder once you add activities and travel into the mix.
We don't want people to feel they have to track protein in every meal forever. But it's a good idea to get a general feel for how much it takes in a day to get near that one gram per pound of ideal body weight. One mindset shift that helps: instead of adding a protein to a meal, build the meal around the protein, and consider doubling the amount you'd normally include. It's still fine to add vegetables and fruit — just minimize processed foods, grains, and carbs as much as you can.
Know Where You Are, Then Build Slowly
You have to know where you're starting before you move forward. If you track your protein for three days right now, you'll see what you're actually getting — and it may be as low as 60 grams a day. That's easy to hit even eating three meals, at 20 grams each. But optimal intake takes more like 30 grams per meal plus snacks.
You can't jump from 60 grams to 150 grams in a single day — that's not sustainable. Figure out where you are now and increase slowly.
Why Fiber Is the Essential Partner
As you increase protein, fiber becomes critical. What people often notice is that adding protein changes their gut motility, and constipation can become an issue — usually because they get so focused on protein they stop eating the fiber, vegetables, and other good foods to complement it.
Fiber slows glucose absorption and feeds the gut microbiome, blunting the blood sugar spikes that drive insulin resistance and improving sensitivity. Feeding the microbiome regularly helps produce short-chain fatty acids, which help reduce inflammation. It also increases satiety — so, like protein, it keeps you satisfied, whereas carbs go in and out and leave you hungry again. And of course it supports regular bowel movements.
Gut health is tied to so many other midlife issues, which is another reason fiber matters. The targets are 25 grams a day for women and 35 grams for men — also hard to hit, since the average adult gets only 10 to 15 grams.
There are two forms. Soluble fiber forms a gel in the gut, slows digestion, lowers cholesterol, and stabilizes blood sugar. Insoluble fiber doesn't dissolve and adds bulk to stool. You want a combination of both to get the full benefit.
The best sources are leafy greens, cruciferous vegetables, fruits and berries, apples, pears, beans, and whole grains (focusing on whole rather than refined grains like white flour), plus nuts and seeds — chia, basil seeds, flax, and hemp are all great.
What to Look for in Protein Supplements
If you can't get all your protein from whole foods, supplementation can fill the gap — but it's tricky, because some people have sensitivities to casein, whey, beef, or other sources.
The number one thing to look for is as few ingredients as possible, ones you can pronounce. Watch closely for added sugar or sugar alternatives. Among sweeteners, stevia, monk fruit, allulose, and erythritol are the better options; try to stay away from artificial sweeteners, which can be inflammatory. And you really do have to know your own body — a food sensitivity test, for example, can reveal that something like monk fruit (or whey, or casein) isn't a good option for you.
Whey protein is high in leucine, the important amino acid we need, and it's a fast digester, which makes it good for post-workouts and smoothies. There are lots of options out there, and we'll put some recommendations in the show notes — but it does take trial and error to find the one your body digests easily.
For fiber, whole foods are best, as mentioned — real food always matters. Psyllium husk is a commonly available supplement, but be careful with grocery-store options: read the label so you're not undoing something good by supplementing in something that counterbalances it.
Practical Strategies
Meal prepping is one of the best ways to stay consistent — and consistency, whether with workouts or nutrition, is what we talk about constantly. It takes planning and grocery shopping, but batching your protein (chicken, eggs, turkey, or whatever suits your palate and your family) makes hitting your targets far easier.
Aim for about 30 grams of protein per meal. There are great resources with recipes built specifically around this guideline — 30 grams of protein with good fiber. Several people are now creating recipes designed around exactly this combination.
A few more tips:
Prioritize breakfast protein. A bagel, toast, pancake, or donut isn't a protein source — eat those and you'll be hungry quickly. Lead with protein to stay satiated through the day.
Smoothies are a great option — just include fat and fiber to slow things down. A little flax seed boosts the fiber without you even noticing.
A note on collagen: it's a protein powder, but not a complete protein and low in leucine, so it doesn't offer as much for building muscle.
A Sample Day: 130g Protein, 35g Fiber
Breakfast — three scrambled eggs with spinach, avocado, berries on the side: ~20g protein, 8g fiber
Mid-morning snack — Greek yogurt with almonds: ~15g protein, 3g fiber
Lunch — grilled chicken over mixed greens with chickpeas and olive oil: ~35g protein, 10g fiber
Mid-afternoon snack — whey protein shake with berries and spinach (add seeds to boost fiber): ~25g protein, 5g fiber
Dinner — salmon with roasted Brussels sprouts and quinoa: ~35g protein, 10g fiber
Spread from about 7 a.m. through dinner around 6 or 7 p.m., that adds up to roughly 130 grams of protein.
Honestly, this sample day would be hard for a lot of people — including us. Getting in three meals plus snocks is tough, especially since we don't typically eat breakfast at 7 a.m. And for anyone doing intermittent fasting, the feeding window is smaller, which makes it harder still. That's exactly where protein bars and drinks can help supplement.
Wrapping Up
We hope this wasn't too much reiteration of what we've covered before, but it's worth thinking hard about where you are with protein right now and what questions you have — reach out with them.
Just remember it takes a lot of protein to build muscle. As we often say: we don't know of any 80-year-olds who say they're too strong — they all want to be stronger. Wherever you want to be at 70 or 80, you have to do your homework now, because it won't happen on its own.
We hope you've gained a little insight from what we presented today. Have a healthy day.
