The National Institute of Health (NIH) National Cancer Institute offers some tips (pun not intended) on how cigars add significant cost to healthcare.

They are as toxic as cigarettes, if not more.

A single cigar can potentially provide as much nicotine as a pack of cigarettes.

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A higher level of cancer-causing substances: During the fermentation process for cigar tobacco, high concentrations of cancer-causing nitrosamines are produced. These compounds are released when a cigar is smoked. Nitrosamines are found at higher levels in cigar smoke than in cigarette smoke.

More tar: For every gram of tobacco smoked, there is more cancer-causing tar in cigars than in cigarettes.

A higher level of toxins: Cigar wrappers are less porous than cigarette wrappers. The nonporous cigar wrapper makes the burning of cigar tobacco less complete than the burning of cigarette tobacco. As a result, cigar smoke has higher concentrations of toxins than cigarette smoke.

Furthermore, the larger size of most cigars (more tobacco) and longer smoking time result in higher exposure to many toxic substances (including carbon monoxide, hydrocarbons, ammonia, cadmium, and other substances).