New research shows that herbal cigarettes health risks may run even higher than those of conventional tobacco. The findings directly challenge one of the most persistent myths in the wellness and smoking-cessation space.

Researchers from the Indian Institute of Technology Gandhinagar (IITGN) and the University of Illinois Urbana-Champaign (UIUC) published a study in the Journal of Hazardous Materials. They compared smoke from two popular tobacco brands against four herbal varieties. The results arrived at a time when companies actively market herbal and plant-based smoking products to younger audiences through natural wellness messaging.

What the Study Found About Herbal Cigarettes Health Risks

The research team used an automated two-chamber rig to replicate human inhalation rates. They tested the physical, chemical, and oxidative properties of smoke from each product. The herbal varieties contained basil, clove, cinnamon, mint, and green tea. Consumers widely associate these ingredients with health and wellbeing in other contexts.

The results were stark. Herbal cigarette smoke produced sub-500-nanometre particles at concentrations roughly 20% higher than tobacco smoke. Particles this small penetrate deep into lung tissue. Doctors link them directly to heart disease and chronic respiratory conditions.

“Our findings challenge the widely held belief that tobacco-free means risk-free,” said Sameer Patel, assistant professor at IITGN. “Emissions from herbal cigarettes are comparable to or exceeded those from tobacco cigarettes on nearly every metric we measured. Leaf-wrapped herbal variants turned out to be the most hazardous of all the samples tested.”

The Hidden Danger of Tobacco-Free Cigarette Dangers: Oxidative Stress

The study also measured oxidative potential. This tells scientists how effectively smoke generates reactive oxygen species inside the body. These molecules drive inflammation, cause lung tissue to remodel, and alter blood vessels in ways that raise cardiovascular risk.

Herbal cigarettes produced particulate matter with significantly higher oxidative potential than tobacco cigarettes. Tendu-leaf-wrapped variants performed worst. They recorded oxidative potential approximately 49% higher than paper-wrapped alternatives. Existing public messaging on tobacco-free cigarette dangers rarely mentions this finding.

“That finding is important because many consumers associate nicotine-free products with reduced harm,” said Vishal Verma, associate professor at UIUC.

Natural Ingredients Do Not Make Herbal Cigarettes Safe

One finding stood out above the others. A basil-filled herbal cigarette, marketed as a healthy and chemical-free product, carried the highest lead concentration of all samples tested.

Many of these products make bold claims. Manufacturers sell them as remedies for coughs, poor sleep, and anxiety. Lead author Alok Kumar Thakur was direct on this point. “There is limited scientific evidence evaluating the emissions and toxicological impacts of these products,” he said. In short, the marketing has run well ahead of the science.

Postdoctoral researcher P S Ganesh Subramanian put the core issue plainly: “Combustion, fine particles, soot, trace metals, and the wrapper around them all matter more than what is written on the box.”

A Regulatory Gap Putting Consumers at Risk

Governments have not kept pace with these products. In India, the Cigarettes and Other Tobacco Products Act 2003 (COTPA) governs tobacco-based goods through warning labels and advertising restrictions. Tobacco-free products commonly fall outside this framework. The same gap exists in the United States and across Europe.

This means herbal cigarette dangers go largely unregulated at precisely the moment these products reach the widest audiences.

The researchers concluded that evidence-based regulation has become a matter of public health urgency. Younger consumers and first-time smokers are the primary targets of wellness-oriented marketing. Without clearer oversight, people who believe they are making a safer choice are taking on significant and poorly understood risks.

Understanding herbal cigarettes health risks fully is now more important than ever. No form of smoking is without consequence, and the label on the packet is no substitute for the science inside it.

Source: respiratory-therapy