The federal agency charged with keeping food and drugs from harming people may soon be asked to take a consumer product that kills more than 400,000 people a year and make it safer.

The product is the cigarette _ generally acknowledged as anything but safe. Smoking accounts for nearly one in five deaths in the United States.

That toll can be reduced, tobacco foes say, and they point to a bill that is expected to pass a Senate committee Wednesday as the tool to make it happen.

The legislation would give the Food and Drug Administration the same authority over cigarettes and other tobacco products that the regulatory agency already has over countless other consumer products. It’s not something the agency necessarily wants, according to past comments by FDA commissioner Dr. Andrew von Eschenbach.

The bill would let the FDA regulate the levels of tar, nicotine and other harmful components of tobacco products. Cigarette smoke alone contains some 4,000 chemicals, more than 40 of which are known to cause cancer.

“Are we going to cut cancer in half with FDA control? No. Can we do with cigarettes things that are important in regulating a product to minimize its toxicity? Yes, I think we can,” said Dr. David Burns of the University of California, San Diego, scientific editor of several surgeon general reports on tobacco.

New products would need FDA approval before they could be sold, according to the legislation. The bill also would authorize the FDA to set national standards for tobacco products to control how they are made, as well as force the disclosure of their ingredients, including compounds and additives, and in what quantities. That, supporters claim, should help expose and ultimately limit the ways cigarettes are engineered to the detriment of the public’s health.

“This bill wisely doesn’t try to predict what a cigarette will look like once FDA begins to take action. Instead, it says to scientists at FDA, ‘You have the power to require changes in tobacco products in whatever ways you believe, based on the science, that will reduce the harmfulness of the products or the addictiveness of the products,’” said Matthew Myers, president of the Campaign for Tobacco-Free Kids. The group, once known as the National Center for Tobacco-Free Kids, has long supported the bill, which has faltered in previous Congresses.

No one among those for or against the Senate bill, mirrored by matching legislation in the House, believes it could result in a safe cigarette. There is consensus that there is no such thing. But some foes of the bill maintain it could create that impression.

“It would still be a deadly product. They are not going to make it a safe product by taking out particular smoke constituents. The problem is the public is going to perceive the product is safe because the FDA has assumed jurisdiction,” said Dr. Michael Siegel, a Boston University School of Public Health professor.

Advocates say the bill would, at a minimum, give the FDA the authority to go where the scientific evidence takes it and only then make decisions based on the science.

“There is a broad range of actions that the FDA potentially could take, some of which we understand now and some we can only see dimly,” Burns said. “To say that there’s nothing we can do is nihilistic in thinking and inconsistent with science.”

The bill also would keep tobacco companies from tinkering with their products in ways that would make them any more dangerous, supporters add.

“The tobacco industry would not be allowed to manipulate the ingredients _ like increase nicotine or decrease nicotine or whatever they do _ without disclosing it,” said M. Cass Wheeler, chief executive officer of the American Heart Association. “The bill would put the burden of proof on industry to demonstrate to the FDA that what they’re doing would not be more harmful,” Wheeler said.

When asked for some likely targets that regulators could tackle, Centers for Disease Control and Prevention chemist David Ashley rattled off more than a half dozen compounds in tobacco and smoke that worry scientists, even though it’s unclear just how beneficial removing or reducing their levels would be. They include:

_Nitrosamines, a potent carcinogen. The burley tobacco used in American cigarettes is especially high in nitrosamines.

_Acetaldehyde, a potential carcinogen that may make tobacco more addictive. It’s produced when sugars, added to tobacco, are burned.

_Cadmium and lead, two heavy metals that are toxic. Their levels generally depend on the environmental conditions where the tobacco is grown.

But Ashley, an expert in the constituents of tobacco and tobacco smoke, cautions that cigarettes are a very complex product and have traditionally changed with time as manufacturers tinker with them.

“One problem from a scientific standpoint is the product changes so often but the health effects are long-term. The cigarettes people are smoking today aren’t the cigarettes of 10 years ago,” Ashley said. “It’s hard to link a change in the products to a particular health end point because there’s nothing you can get your hands around.”

Another expert called the task of figuring out how to reduce tobacco’s harm basic “bread-and-butter stuff” for the FDA.

“This is what they do all the time: develop performance criteria for products,” said Jack Henningfield, a former tobacco researcher at the National Institute on Drug Abuse. That in turn would act as an incentive for tobacco companies to create products that are less harmful, he added.

As for the FDA, commissioner von Eschenbach said recently he wouldn’t want his agency put in the position where it had to determine a cigarette is safe.

Nor would it appear that the agency could approve any new cigarette, even if it were purportedly safer, under the legislation, said Sen. Richard Burr, R-N.C., who opposes the bill.

“It’s an impossible pathway to understand at an agency tasked with a mission that is to prove safety and efficacy,” said Burr, contending such an arrangement could keep any new reduced-harm tobacco product from coming on the market.

Philip Morris USA, maker of Marlboro, the nation’s top-selling cigarette brand, supports the bill. R.J. Reynolds Tobacco Co. and others oppose the legislation, saying its restrictions on advertising would help cement Philip Morris’ No. 1 market position.

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The bill is S.625
For bill information: thomas.gov/