So You Want To Stop Falling for Nutrition and Fitness Misinformation
BLACK IRON RADIO EP. 364: So You Want To Stop Falling for Nutrition and Fitness Misinformation
We have more health information available to us than ever before, and somehow people are more confused than they have ever been.
Amanda, Chris (PhD exercise science), and Jess Gordon get into why nutrition and fitness misinformation spreads so easily, what makes it so believable, and how to build a better filter without getting an advanced degree. They cover why "doing your own research" on PubMed can actually give you a false sense of confidence, why simplicity almost always beats truth online, how fear and urgency get used to sell you things, and the specific red flags that should turn your BS meter on. Blue check marks, letters behind a name, always and never statements, and the toxic ingredient headlines that make everyone clutch their pearls.
Nobody here is telling you to stop learning online. They are just handing you a sharper filter for what you find!
We have more health information available to us than ever before, and on paper that should be a great thing. In reality, it means good research and bad research sit right next to each other with zero barrier to entry, and confusion around nutrition and fitness is arguably at an all time high. That confusion is not just annoying either. It can cost you money, delay your progress, create unnecessary fear around food or exercise, and lead to poor or even dangerous decisions.
Amanda, Chris, and Jess sat down to talk about why misinformation spreads so easily, the red flags worth watching for, and how to actually evaluate a claim before you let it change your habits.
Doing Your Own Research Isn't as Simple as It Sounds
Even if you consider yourself someone who "does their own research," it is worth a gentle pushback. Reading primary research on PubMed can feel like getting the ground truth, but unless you are formally trained in that specific area, it is genuinely hard to know what to take away from a study, and it can actually give you a false sense of confidence rather than real understanding. Research papers are written for other scientists in that field, not for the general public. Even Chris, who holds a PhD in exercise science, leans on other experts or consensus statements when forming opinions outside his own specialty.
Credentials matter here too, but they are not a blank check. Letters behind someone's name do not guarantee they are immune to misinterpreting research or wandering outside their actual area of expertise.
Why Misinformation Spreads So Easily
So why does misinformation travel so much faster than accurate information? A few reasons.
Simplicity beats truth. Something simple is cheap for your brain to process and resolves uncertainty, which feels good. "It depends" is the honest answer to almost everything in a field with any complexity, but it is also the least satisfying thing to hear.
Misinformation is also just easier to produce than it is to correct. It takes zero effort to make something up, and a lot of effort to properly explain why it is wrong. By the time that explanation exists, the lie has already reached millions of people whose existing biases make it easy to latch onto.
On top of that, misinformation taps into emotion instead of critical thinking. People are driven by fear, anger, hope, and urgency, and all of those drive reactions. It finds whatever insecurity you already have, whether that's about being a parent, your weight, your health, or your food choices, and speaks directly to it. A headline like "this ingredient is poisoning your kids" is a good example: it makes everyone collectively clutch their pearls, and that instinct to protect kicks in so fast that questioning the claim comes second, especially in a culture that loves a quick fix. It also offers a sense of community and validation, the feeling that you are not alone in how you feel.
And on social media, the loudest, most persuasive voices often win attention regardless of whether they are the most credible. A blue checkmark or a slick reel can carry more weight than an actual expert simply because it looks more polished.
Red Flags Worth Watching For
These are the moments that should turn your BS meter on, or at the very least, tell you it's worth digging a little deeper before you believe or buy anything.
Always or never statements. Nothing in science is 100% certain, which is part of why researchers rely on things like the 95% confidence interval, an explicit acknowledgment that a result is only accurate with a certain level of confidence. So when someone tells you to never eat carbs, or to always eat within 30 minutes of training, take that with a grain of salt. Context almost always matters.
A single food demonized or worshipped. Whether it is seed oils, artificial sweeteners, or fruit getting vilified, or raw milk, bone broth, and apple cider vinegar getting treated like magic, only cults deal in absolutes. Ask whether the claim references actual dosage or human outcome trials, or whether it is just fear based language about how "industrial" or "unnatural" something sounds. No single food is going to fix or ruin your health, and no food is a substitute for a full, diverse diet.
Fear based marketing. Fear is one of the most powerful sales tools there is, because it plays on a basic survival instinct. Watch for language like "your food is poisoning you" or "everything you've been taught is wrong." A lot of ingredient fear mongering falls apart once you realize that everything you eat is, technically, a chemical. Creatine monohydrate is synthesized using some genuinely scary sounding chemicals, and the end result is the exact same molecule found naturally in steak. Cyanocobalamin sounds like poison. It is vitamin B12. Ascorbic acid sounds corrosive. It is vitamin C. Be aware of ingredients, not scared of them.
"This is only one molecule away from X." You'll see this used to make an ingredient sound dangerous by linking it to something scary, like claiming a food additive is "basically" a toxic industrial chemical because their molecular structures are similar. The problem is that one small structural difference can completely change how a substance behaves in your body. Water and hydrogen peroxide are only one oxygen atom apart, and one of those you can drink and one will burn you. Being close to something on paper does not mean the two act the same way.
Miracle timelines. Lose X pounds in X days, get abs from wearing electrode stickers on your stomach, that kind of thing. If it sounds too good and too fast, it usually is.
How to Evaluate a Claim
Ask "compared to what?" Before chasing an extreme fix, start with the basics. If someone makes a big claim, like raw egg yolks being a superior protein source, ask what it's actually being compared to. Compared to no breakfast at all? Sure. Compared to a normal source of protein? Not so much. A lot of problems people are trying to solve, whether it is digestion, energy, or mood, can often be addressed by looking at hydration, sleep, movement, or overall diet diversity before jumping to something extreme.
Look at the total body of evidence, not one study. One study on its own does not mean much beyond "this might be worth testing further." A key part of a reputable study is whether it is repeatable, meaning other scientists can test the same claim and get similar results. Watch for small sample sizes, confounding variables (other factors that could explain the result besides the one being tested), and funding bias, where a study's backer has a financial stake in the outcome. Also watch for p-hacking, where researchers cherry pick the variables that happened to show a statistically significant result and quietly leave out the ones that didn't.
Know the difference between a mechanism and an outcome. Just because an ingredient affects a biomarker in a lab setting does not mean it leads to a meaningful real world health outcome. Broccoli contains sulforaphane, a compound that causes temporary cellular stress when you eat it. That is true. But that transient stress is what prompts your body to upregulate its own antioxidant and DNA repair processes, which is a net positive. Stress and inflammation are part of being human, and your body is generally well equipped to handle them.
Consider short term versus long term response. Blood pressure spikes dramatically during a heavy squat, sometimes into the two hundreds systolic, but that does not mean squats are bad for your cardiovascular health. Context and duration change everything.
Check the research itself. When someone shows you a study, ask a few quick questions. Is it an animal or lab study being used as the sole basis for a claim that contradicts expert consensus? How old is it, especially in an area where methods have improved a lot over time? Does it actually measure the outcome you care about, or does it take several logical leaps to get there? And is it one single study, or a systematic review or meta-analysis that combines data across dozens or hundreds of studies? Individual studies can go either direction on a topic. The real strength comes from combining many of them.
Consider incentives. This is not about dismissing every study funded by an interested party, since good information can still come from those. It is more about noticing when someone's entire online identity is built around one nutritional belief being true. If changing their mind would mean rebranding their whole platform, they are not exactly positioned to change it. Look instead for people whose identity is built around following the science, even when it means updating their own views.
A Few Myths That Just Won't Die
Carbs make you fat. The only thing that reliably drives excess weight gain is an excess of calories overall, and that can come from any macronutrient. Carbohydrates are your brain's preferred fuel source and matter for cognitive function and daily performance. As a thought experiment, GLP-1 medications actually cause a systemic increase in insulin and are remarkably effective for fat loss, which does not fit the old carbohydrate insulin model of obesity.
You need to "fix" your metabolism. Your metabolism is responsive and adaptive, but you cannot break it, and no product exists that will fix or boost it for you. Detox teas are a good example. Your kidneys and liver already detox your body. That is their job. A "metabolism boosting" drink is not doing anything close to what the label implies. Anything that meaningfully boosts metabolism, like old ephedrine based stacks, usually comes with real cardiovascular risk.
Perimenopausal or menopausal women should stop doing cardio. What actually helps is prioritizing a whole food, protein rich diet, managing stress, resting when needed, and combining strength training with cardio, not eliminating one type of movement. Research consistently shows that women who exercise more during this life stage, regardless of intensity, tend to do better than those who exercise less.
The Bottom Line
Confusion is often a business model. The more confused people feel, the easier they are to market to. The good news is that the fundamentals rarely change. Eat enough protein, eat fruits and vegetables, prioritize sleep, strength train, and move your body regularly. Twenty years from now, that advice will still hold up.
As a consumer of information, the goal is not to become a scientist. It is to ask better questions. Instead of "is this true," try "how true is this, where is this person getting their information, for whom is this true, compared to what, and does it even matter?" And maybe most importantly, does anyone stand to profit from this claim, or from your reaction to it?
The people who make the best long term health decisions are not the ones chasing every new trend. They are the ones who have learned to think critically, filter the noise, and stay focused on what consistently works. Nobody is telling you to stop learning online. You just need a sharper filter for what you find, and if you are having trouble building that on your own, that is exactly what a good coach is for.
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If you enjoyed this conversation, check out more episodes of Black Iron Radio, where we cut through the noise and give you real, no-BS advice on feeling, performing, and looking your best. Each week we share practical nutrition, training, and wellness strategies and tips to help you succeed.
