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The protein boom has a cardiology blind spot

Resistance training is good for cardiovascular health. The fitness products built around it are more complicated. As high-protein diets, powders and stimulant-heavy pre-workout products become embedded in gym culture, cardiologists are pushing back against the assumption that anything associated with fitness is automatically heart-healthy.

October 13, 2026
Editorial
Protein powders and pre-workout supplements have become routine parts of gym culture, but cardiovascular health depends on more than hitting a protein target.MMD Creative / Shutterstock.com

IPM Take

The gym has become an unlikely frontier in cardiovascular prevention.

That is not because resistance training is dangerous. The evidence points in the opposite direction. Strength training can improve blood pressure, glycaemic control, lipid profiles and body composition, and is associated with lower cardiovascular risk.

The complication is everything that has grown around it.

Protein targets are becoming increasingly aggressive. Pre-workout powders can contain caffeine and other stimulants. Social-media fitness culture can reduce nutrition to macronutrient mathematics, where reaching a daily protein number matters more than what foods were displaced to get there.

Cardiology is beginning to challenge that logic.

A 2026 ACC scientific statement argues that cardiovascular risk is influenced more by food source, overall dietary quality and processing than by the relative percentage of calories coming from protein, carbohydrate or fat.

That puts the booming sports-nutrition market into a different light.

Thirty grams of protein is not a cardiovascular unit of measurement.

Thirty grams from lentils, nuts or minimally processed foods arrives in a very different nutritional package from protein delivered through processed meat, highly processed snack products or a supplement accompanied by large stimulant doses.

The emerging policy issue is therefore not whether people should exercise or consume protein.

It is whether nutrition and supplement systems are keeping pace with a fitness market that increasingly behaves like health care without being regulated like medicine.

Executive Summary

A World Heart Day commentary by Indian cardiologist Shashikant Mishra highlights an increasingly visible collision between gym culture and cardiovascular prevention.

The central argument is nuanced: resistance training itself should be encouraged, but protein consumption and pre-workout supplements should not be treated as automatically beneficial simply because they are associated with fitness.

The American Heart Association already recognises resistance training as a useful cardiovascular intervention. Its scientific statement reports beneficial effects on blood pressure, glucose regulation, lipid profiles and body composition, while observational evidence links resistance exercise with lower cardiovascular and all-cause mortality.

Protein is more complicated.

For people undertaking regular training, higher protein intake than the basic adult requirement can be appropriate. But cardiovascular evidence increasingly emphasises where that protein comes from. The 2026 ACC nutrition statement recommends prioritising plant protein sources and overall diet quality rather than treating total macronutrient intake as the primary measure of a healthy diet.

At the same time, the rise of powders, bars and pre-workout formulations introduces a regulatory dimension.

India regulates health supplements and nutraceuticals through the Food Safety and Standards Authority of India. Products falling under these categories are not medicines, must comply with ingredient and labelling rules and cannot claim to prevent, treat or cure disease.

That boundary is increasingly important as consumers encounter products marketed through fitness, performance and health narratives that can feel medical even when they are legally foods or supplements.

Why it matters

  • HTA bodies: Protein powders and sports supplements are not conventional HTA technologies, but the broader issue reflects a familiar evidence problem: improvements in body composition or gym performance should not be assumed to translate into cardiovascular benefit. Claims need to be separated according to the outcomes actually demonstrated.
  • Payers: Cardiovascular prevention increasingly extends beyond prescriptions. Diet quality, exercise and weight management can alter long-term risk, but fragmented consumer supplement use may sit outside supervised care. Prevention programmes may need stronger links between exercise advice, nutrition counselling and clinical risk assessment.
  • Industry / innovation partners: Sports nutrition sits at the intersection of food, wellness and health. Companies able to demonstrate ingredient transparency, appropriate dosing, stronger evidence and nutritionally credible formulations may face a different competitive environment as cardiovascular guidance moves away from single-nutrient thinking.

Fitness culture has become increasingly data-driven. People track their steps, calories, heart rate, training volume and daily protein intake, often with impressive precision. That can be useful, especially when it helps people exercise consistently or understand their nutrition better. But it can also encourage a very narrow idea of health, where progress is reduced to whether enough targets were hit by the end of the day. Protein is one of the clearest examples. It has become a headline metric in its own right, even though cardiovascular health depends far more on the quality of the overall diet than on reaching a particular number of grams. 

The gym is not the cardiovascular problem

Resistance training has sometimes been treated as secondary to aerobic exercise in discussions about heart health.

That position has become increasingly difficult to defend.

The American Heart Association’s scientific statement on resistance exercise concluded that strength training can improve several established cardiovascular risk factors, including blood pressure, glucose regulation, lipid profiles and body composition.

Combined aerobic and resistance exercise may be particularly useful for people with obesity, diabetes and elevated cholesterol.

So the message from cardiology is not to stop lifting.

It is to stop assuming that every behaviour surrounding lifting inherits the same health benefits.

Protein has become a target instead of a food

Protein consumption has moved from sports science into mainstream consumer culture.

Tracking apps display daily targets. High-protein versions of ordinary foods occupy supermarket shelves. Protein bars, shakes and powders promise convenient ways to push intake higher.

For people building or preserving muscle, higher protein consumption can be appropriate.

But “more” eventually stops being a useful nutritional philosophy.

The World Health Organization notes that protein requirements differ according to factors such as age and activity level, and that athletes and people actively maintaining substantial muscle mass may require more than the general adult population.

The cardiovascular question is different.

It asks not only how much protein someone consumes, but what replaces what.

If higher protein intake means replacing refined carbohydrates with legumes, nuts, fish or other nutrient-rich foods, the nutritional consequences may be favourable.

If it means increasing processed meat, highly processed snack products or displacing fruit, vegetables, whole grains and fibre, the same protein number can describe a very different diet.

That distinction is now embedded directly in cardiovascular guidance.

The new cardiology message is about the whole food

The ACC’s 2026 scientific statement on nutrition marks a broader shift away from nutrient reductionism.

Its position is that cardiovascular risk is shaped more strongly by food source, nutritional quality and processing than by the percentage of calories assigned to protein, carbohydrate and fat.

For protein specifically, it recommends emphasising plant-based sources over animal sources for cardiovascular prevention, while particularly limiting processed meats.

That makes the obsession with protein totals look increasingly outdated.

A label can tell consumers how many grams of protein a product contains.

It cannot tell them whether their overall dietary pattern protects their cardiovascular health.

Pre-workout supplements raise a different problem

Then there is the other side of gym nutrition.

Pre-workout products are designed to increase energy, focus or perceived performance before training. Formulations vary widely, but some include substantial amounts of caffeine alongside other stimulatory ingredients.

For many healthy adults, moderate caffeine intake will not create a serious cardiovascular problem.

That does not make every combination harmless for every user.

Stimulants can acutely increase heart rate and blood pressure. The relevance may be greater for people with hypertension, arrhythmias, cardiovascular disease or other risk factors, particularly when multiple stimulant-containing products are combined.

The commercial environment makes this harder.

A consumer may take a coffee, a pre-workout powder and an energy drink without thinking of them as three exposures to the same broad stimulant category.

The product format changes.

The cardiovascular system does not care about branding.

Fitness products sit in a regulatory grey zone for consumers

Legally, the distinction is clearer than it often feels in advertising.

India’s FSSAI regulates health supplements and nutraceuticals as food categories rather than medicines.

The regulatory framework requires defined labelling and places limits on the claims manufacturers can make. Health supplements are not supposed to claim that they prevent, treat or cure human disease, and labels must include information such as nutrient quantities, recommended use and warnings.

That boundary matters because the consumer experience is increasingly blurred.

Protein powders can be presented alongside language about metabolism.

Pre-workout products can appear to promise physiological optimisation.

Influencers can speak about supplement routines with a certainty that sounds closer to prescribing than advertising.

The formal product may be regulated as food.

The consumer may interpret it as a health intervention.

Cardiology needs to enter the fitness conversation earlier

This creates an unusual prevention gap.

Cardiology traditionally sees patients after cardiovascular risk becomes clinically visible: hypertension, dyslipidaemia, diabetes, arrhythmia or established disease.

Fitness culture often reaches people years earlier.

That creates an opportunity.

Resistance training can be part of cardiovascular prevention.

So can better dietary quality.

So can replacing highly processed foods with more nutrient-dense sources of protein.

The problem begins when “healthy” becomes synonymous with whatever produces more muscle or less body fat.

Those outcomes matter.

They are not the entire cardiovascular system.

The policy issue is bigger than protein powder

The most interesting part of this debate may therefore not be whether someone needs 1.2, 1.6 or 2 grams of protein per kilogram.

It is the infrastructure surrounding those decisions.

Who sets realistic consumer guidance?

How clearly are stimulant quantities displayed?

How are online cardiovascular or performance claims monitored?

When does sports nutrition become medical nutrition?

And how should clinicians respond when dietary advice increasingly comes from influencers, gym staff and commercial platforms rather than healthcare professionals?

There is no need to turn gym culture into a cardiovascular threat.

Exercise remains one of the strongest tools available for preventing chronic disease.

But the supplement and high-protein economy surrounding exercise deserves more scrutiny than the activity itself.

A stronger body and a healthier heart are compatible goals. The mistake is assuming they are automatically the same thing.

Source & Evidence

The Week. World Heart Day: Gym culture meets cardiology: Does everyone really need more protein? 29 September 2026. Commentary by cardiologist Shashikant Mishra on resistance training, protein sources and stimulant-containing pre-workout products.

American College of Cardiology. Food and Health: Nutrition for Prevention and Management of Cardiovascular Disease: 2026 ACC Scientific Statement. JACC. 30 September 2026. Concludes that food source, dietary quality and processing matter more for cardiovascular risk than macronutrient proportions alone, and supports greater emphasis on plant-derived protein sources.

American Heart Association. Resistance Exercise Training in Individuals With and Without Cardiovascular Disease: 2023 Update. Circulation. 2024;149:e217-e231. Reviews evidence that resistance training can improve blood pressure, glycaemia, lipid profiles and other cardiovascular risk factors.

World Health Organization. Healthy diet. Updated 26 January 2026. Provides current WHO guidance on protein requirements, dietary balance and the importance of minimally processed foods in preventing noncommunicable disease.

Food Safety and Standards Authority of India. Health Supplements and Nutraceuticals Regulations. Sets the Indian regulatory framework for health supplements, nutraceuticals and related food categories.

Food Safety and Standards Authority of India. Food Safety and Standards (Health Supplements, Nutraceuticals, Food for Special Dietary Use, Food for Special Medical Purpose, Functional Food and Novel Food) Regulations, 2016. Includes requirements covering health claims, nutrient declarations, usage warnings and the distinction between supplements and medicines.