Lukehannanutrition

Lukehannanutrition Evidence based personal trainer and nutritionist.

I created this page with the purpose of using it as a platform for me to share information about lifestyle, nutrition, exercise, and health in general! It is also a way for people to ask questions that they may have, and for me to answer to the best of my abilities. If you do have a genuine question but don't want to post on the page, PM me and I will share and answer it anonymously. The level of

information provided will vary, varying from advice for beginners, to topics that may interest those of you who are slightly more advanced! Like and share if you like what you see or you're just feeling kind and what to help me out :)

Cheers,

Luke

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Before you begin any exercise program or follow any of the recommendations, advice or other instructions on this page you should first consult your doctor. The recommendations, advice and instructions are in no way intended to replace or to be construed as medical advice and is offered for informational purposes only.

28/08/2026

To be clear, this isn’t to say that excess glucose can’t be harmful, or that cholesterol (or foods that raise LDL cholesterol) are inherently bad at any quantity.

The point is simply to highlight the inconsistency in the logic in this commonly cited argument from the carnvireo crowd.

Your body being able to make something doesn’t automatically mean you should avoid consuming it. And something being essential to normal physiology doesn’t mean that having more of it is harmless.

Context, dose and the actual evidence matter.

20/08/2026

Unless you’re exercising for prolonged periods (60-90 minutes+), exercising in the heat, or have a specific medical reason for taking electrolytes (such as POTS), you probably don’t need them.

For most people, a normal balanced diet provides the electrolytes you need, and plain water is perfectly adequate for everyday hydration.

And more electrolytes doesn’t automatically mean “better hydration.” Many electrolyte products contain substantial amounts of sodium, and regularly adding sodium to an already sodium-rich diet can contribute to higher blood pressure and increased cardiovascular risk.

Save your money. You probably don’t need the fancy salty water.

19/08/2026

This lady follows me (tagged her on TikTok but couldn’t find her IG) - so I’m hoping that she’ll take this in good faith (and take it on board).

PCOS (or PMOS, as it’s now known) can make weight management harder. That isn’t what I disagree with here.

And yes, saying “just eat less and move more” is an oversimplification that ignores the very real barriers people can face, with or without a medical condition.

Calories also aren’t the ONLY thing that matters, and plenty of factors can influence both sides of the energy balance equation.

But there’s a big difference between saying maintaining a calorie deficit can be harder and saying a calorie deficit doesn’t work, or that you somehow “defy the laws of thermodynamics.”

Complexity doesn’t invalidate energy balance - and the current body of evidence comparing weight-loss interventions in women with and without PCOS supports that.

31/07/2026

How does Diet Coke contain 0 calories but still taste like sugar? 🧐

09/07/2026

Sumo wrestlers prove that “fatness” doesn’t impact health? 🧐

I’m not hating on this creator, so let’s keep the discussion respectful.

There’s a lot to unpack in this video. Some of the points she makes I agree with, and some I don’t. I’ve actually covered most of the arguments she raises (both for and against) in previous videos.

However, I want to focus specifically on the claim that sumo wrestlers are healthy, because this is an argument I hear all the time.

PMCID: PMC12544268

08/07/2026

And honest talk and a thank you for all the support 🫡🙏🏻

03/07/2026

Another carnivore influencer - not as healthy as they thought!? 🧐

I don’t wish ill health on anyone, but let’s be honest - many of us aren’t exactly surprised this keeps happening.

The number of carnivore influencers who eventually have to reintroduce other foods because of health issues (issues that were entirely predictable, btw) would almost be comical… if it weren’t for the fact that they’ve convinced so many others to follow the same path.

If someone chooses to follow this diet, that’s their perogative - but they should know the facts and the risks, so they can make INFORMED DECISIONS.

Diets high in saturated fats and low in polyunsaturated fats and fibre have consistently been shown to be detrimental to long-term health.

This doesn’t mean you’re guaranteed to develop problems on a carnivore diet… but it does mean you’re increasing your risk of chronic illness.

And what’s wild is that when these influencers backtrack, their followers experience such strong cognitive dissonance that they twist themselves into knots making excuses… saying things like “they just weren’t doing it right.”

Maybe… just maybe… the science isn’t as “rigged” as you think it is🫡

If you want to actually understand how diet affects chronic disease risk, check out these people 👇

.matthewnagra

foodscience




md richie.kirwan



Just a few off the top of my head 😁

25/06/2026

I’m not here to claim this woman has an eating disorder. But if you’re familiar with her content, you’ll know this type of messaging is consistent with the broader ethos of her page - one that centres around restrictive eating and the pursuit of being “skinny.”

I’m also not going to spend time addressing the original point she was trying to make because we all know it’s ridiculous. Yes, generic calorie recommendations aren’t appropriate for everyone, but recommending 800 calories a day as a blanket target is clearly irresponsible.

One thing I do want to clarify is my comment about muscle loss and chronic disease. The relationship is complex, and there’s almost certainly some reverse causality at play - many chronic diseases can themselves cause muscle loss, making it difficult to determine which came first.

That said, skeletal muscle is an active endocrine organ that plays an important role in everything from blood glucose regulation to overall metabolic health. Given what we know, it’s reasonable to conclude that the relationship is at least bidirectional, and that preserving muscle mass is beneficial for long-term health.

And you’re going to have a very difficult time building or maintaining muscle while eating 800 calories a day and obsessing over being “skinny.”

This type of content is genuinely dangerous. It normalises behaviours that can have serious consequences, and it’s astonishing how many influencers continue to promote them without taking responsibility.



26/05/2026

Nutritionalist vs Registered Associate Nutritionist 🧐

14/05/2026

The problem with the anti seed oil and anti science crowd…

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