The Science Behind Heated Tobacco – Is It Safer Than Smoking?
Introduction
Traditional smoking has long been associated with severe health risks—including cancer, heart disease, and respiratory illness—primarily due to the harmful chemicals released during combustion. Cigarettes burn tobacco at high temperatures, releasing smoke that contains thousands of toxic compounds.
In response to growing public health concerns, the tobacco industry introduced heated tobacco products (HTPs) like IQOS, which offer a new way to consume nicotine without burning tobacco. These devices heat specially designed sticks (HEETS or TEREA) to produce vapour instead of smoke.
But are heated tobacco products safer than traditional smoking?
This question has gained importance not just for individual health decisions but also in public policy discussions and regulatory frameworks, especially in forward-thinking regions like the UAE, where harm reduction tools are gaining traction.
In this blog, we’ll explore:
How heated tobacco works
What makes it different from smoking or vaping
The scientific evidence behind its health impact
Regulatory views from the WHO, FDA, and UAE authorities
Whether it’s a safer choice for adult smokers
What Is Heated Tobacco and How Does It Work?
🔍 Definition: Heated Tobacco Products (HTPs)
Heated tobacco—also known as heat-not-burn—refers to products that heat real tobacco to a controlled temperature without setting it on fire. Unlike cigarettes, which burn at over 600°C, these devices heat tobacco to around 350°C, releasing a nicotine-containing aerosol rather than smoke.
Heated tobacco bridges the gap between traditional smoking rituals and modern harm reduction tools.
Combustion vs. Heating: The Key Scientific Difference
The core health difference between traditional smoking and heated tobacco lies in combustion.
🔥 What Happens During Combustion
Burning tobacco creates over 7,000 chemicals, including:
Tar
Carbon monoxide (CO)
Formaldehyde
Ammonia Many of these compounds are known carcinogens and are toxic to the heart and lungs.
🌡️ What Happens When Tobacco Is Only Heated
When tobacco is heated (not burned), the chemical reaction is fundamentally different. The lower temperature (approx. 350°C) avoids combustion and drastically reduces:
Harmful smoke constituents
Tar and solid particles
Carbon monoxide levels
🧪 Chemical Formation Comparison
Chemical
Cigarette Smoke
Heated Tobacco (IQOS)
Tar
High
Low (or none)
CO
High
Significantly reduced
Nicotine
Present
Present
Aerosol Particles
Yes (with toxins)
Yes (less toxic)
This difference is why IQOS is often promoted as a reduced-risk product for adult smokers.
Industry-funded studies by Philip Morris International (PMI) show a significant reduction in harmful exposure.
Independent studies (including WHO-contracted reviews) agree that heated tobacco reduces toxin exposure but warn that long-term effects are still unknown.
⏱️ Short-Term Effects
Users of IQOS are exposed to lower levels of harmful and potentially harmful constituents (HPHCs) compared to smokers. These include:
Acrolein
Benzene
Nitrosamines
🧬 Long-Term Data: Still Under Review
Ongoing studies are tracking long-term lung health, cardiovascular impact, and cancer risk
Some scientists urge caution, noting that reduced exposure ≠ no risk
🌐 WHO & FDA Positions
WHO: Heated tobacco is “likely to be less harmful than cigarettes” but not recommended for non-smokers or youth
FDA: In 2020, the FDA authorised IQOS as a Modified Risk Tobacco Product (MRTP), recognising it reduces exposure to harmful chemicals
Comparing Health Impacts: Smoking vs. Heated Tobacco
Let’s break down the potential benefits for adult smokers:
❤️ Cardiovascular Effects
Cigarette smoke increases blood pressure and damages arteries
Heated tobacco shows less cardiovascular stress, but long-term benefits are still under study
🫁 Lung and Respiratory Impact
Smoking causes chronic bronchitis, emphysema, and lung cancer
Both heated tobacco and vaping are alternatives to traditional cigarettes, but they are fundamentally different in what they deliver and how they work.
🔬 Key Differences in Substance: Real Tobacco vs. E-Liquid
Feature
Heated Tobacco (e.g., IQOS)
Vaping (e.g., Myle, NERD Bar)
Base Ingredient
Real tobacco
Nicotine salt e-liquid
Heating Mechanism
Tobacco is heated
E-liquid is vaporized
Smoke Production
No smoke (tobacco vapor)
No smoke (nicotine vapor)
Taste
Authentic tobacco flavor
Flavored (fruity, mint, etc.)
Heated tobacco gives a real tobacco experience without burning, while vaping is entirely smoke-free but uses synthetic nicotine liquids in various flavors.
🧪 Health and Research Comparison
Heated Tobacco: Research shows significantly lower levels of toxicants compared to cigarettes. It contains real tobacco but emits no smoke or ash.
Vaping: Contains no tobacco at all, only nicotine. While vaping eliminates many of the harmful chemicals in smoke, questions remain about long-term inhalation of flavoring agents and additives.
So far, heated tobacco may be more satisfying for smokers, but vaping may offer lower toxin exposure, especially with quality-regulated devices.
😌 Taste, Ritual, and User Satisfaction
Heated Tobacco mimics the feel of smoking more closely, including hand-to-mouth action, warmth, and tobacco aroma.
Vaping appeals to those who prefer flavored experiences and less throat hit. It’s often smoother but can feel less “authentic” for traditional smokers.
🧍 Who Might Prefer One Over the Other?
Current smokers looking for a similar feel: Heated tobacco (IQOS)
Users who enjoy flavor variety and smooth inhale: Vaping
People trying to reduce toxin intake: Both are better than smoking, but choice depends on personal habits and satisfaction levels.
If you’re a smoker struggling to quit, switching to heated tobacco like IQOS may significantly reduce your exposure to harmful chemicals. While not risk-free, it’s a better option than continuing to smoke cigarettes.
🚫 For Former Smokers or Non-Smokers
If you’ve already quit, there’s no reason to start again with any nicotine product.
Heated tobacco and vaping are not “safe” habits—they are lower-risk alternatives, not health products.
⚖️ A Balanced Perspective
Heated tobacco = Less harmful than cigarettes
But not safe = Still contains nicotine and toxicants
Best case: Quit completely
Next best: Switch to reduced-harm alternatives responsibly
Conclusion: Weighing the Science and Making Informed Choices
The science behind heated tobacco shows a clear reduction in toxic chemicals compared to traditional smoking. It may be a valuable harm reduction tool for adult smokers, but it’s not risk-free.
🔑 Key Takeaways:
Heated tobacco products like IQOS heat tobacco without burning, producing fewer toxins.
Health risks are lower than smoking but still present.
IQOS may be better for smokers who want the feel and taste of real tobacco.
Non-smokers should not use these products.
Before switching, consider your goals:
Want to quit nicotine altogether? Seek support from cessation programs.
Want to reduce smoking risks without quitting nicotine? Heated tobacco may be the right step.
🛒 Where to Buy Authentic IQOS Devices in UAE
If you’re ready to make the switch, make sure you buy authentic IQOS products from trusted sellers.
Greetings,
I'm Abdur Rahman, a vaping enthusiast with two years of experience writing about vape-related topics. I've authored numerous blogs across the internet and currently work full-time as a writer at TEREA HEETS DUBAI. You can also connect with me on Instagram.
