U.S. Extends Deadline on Health Coverage for States

WASHINGTON — With many states lagging far behind schedule, the Obama administration said Friday that it would extend the deadline for them to submit plans for health insurance exchanges, the online markets where millions of Americans are expected to obtain private coverage subsidized by the federal government.

The original Nov. 16 deadline will be extended to Dec. 14 — and in some cases to Feb. 15, the administration said.

The Congressional Budget Office predicts that 25 million people will obtain coverage through the new online shopping malls known as insurance exchanges. Most of them will receive federal subsidies averaging more than $5,000 a year per person to help them pay premiums.

Every state is supposed to have an exchange by Jan. 1, 2014, when the federal government will require most Americans to have insurance. Many states delayed work on the exchanges to see the outcome of a Supreme Court case challenging the health care law, then waited to see if President Obama would be re-elected.

If a state wants to run its own exchange, its governor still must submit a declaration of intent — generally a brief letter of one or two pages — by Nov. 16. But states will have more time to submit the detailed applications required by federal officials.

The White House has repeatedly said that states were making excellent progress toward creation of the exchanges, even as Republican governors and state legislators expressed ambivalence or outright opposition. In addition, state officials who want to establish exchanges said they were having difficulty because Mr. Obama had yet to issue crucial regulations and guidance.

In a letter to governors on Friday, Kathleen Sebelius, the secretary of health and human services, said that many states had asked for “additional time” to submit applications indicating whether they wanted to run their own exchanges or help the federal government run exchanges in their states.

Under the Affordable Care Act, the federal government will run the exchanges in any states that are unable or unwilling to do so. Fewer than half the states have indicated that they will set up their own exchanges.

If states want to run their own exchanges, Ms. Sebelius said, they will have until Dec. 14 to submit applications, or blueprints. And if states want to run exchanges in partnership with the federal government, she said, they will have until Feb. 15 to file applications.

Ms. Sebelius said the new timetable would not defer the dream of affordable insurance for millions of Americans.

“Consumers in all 50 states and the District of Columbia will have access to insurance through these new marketplaces on Jan. 1, 2014, as scheduled, with no delays,” Ms. Sebelius told governors. “This administration is committed to providing significant flexibility for building a marketplace that best meets your state’s needs.”

Senator Orrin G. Hatch of Utah, the senior Republican on the Senate Finance Committee, said the change in the deadline was “no surprise” because the White House had not given states enough information or guidance to make decisions.

“Frankly,” Mr. Hatch said, “the fact that the exchanges are such a mess is pretty emblematic of how flawed the president’s health law is — with states having to bear the brunt.”

Representative Charles Boustany Jr. of Louisiana, a spokesman for House Republicans on health policy, said he doubted that extending the deadline would make the law any more workable.

Even in states where governors want to establish insurance exchanges, they need legal authority to do so, and Republican legislators have balked in some states.

Federal officials hope that fierce competition among insurers offering health plans in the exchanges will drive down premiums.

Joel S. Ario, a former director of the federal office for insurance exchanges who now advises states as a consultant at Manatt Health Solutions, said: “The administration’s decision is a good move. It increases the chances that more states will opt for a partnership exchange, rather than default to a federal exchange.”

An administration official said that Mr. Obama was on schedule in carrying out the law, and that starting in October, Americans will be able to enroll in health plans for coverage starting in January 2014.

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Hurricane Sandy and the Disaster-Preparedness Economy

Jeffrey Phelps for The New York Times

An assembly line at a Generac Power Systems plant. Generac makes residential generators, coveted items in the wake of Hurricane Sandy.

FOLKS here don’t wish disaster on their fellow Americans. They didn’t pray for Hurricane Sandy to come grinding up the East Coast, tearing lives apart and plunging millions into darkness.

But the fact is, disasters are good business in Waukesha. And, lately, there have been a lot of disasters.

This Milwaukee suburb, once known for its curative spring waters and, more recently, for being a Republican stronghold in a state that President Obama won on Election Day, happens to be the home of one of the largest makers of residential generators in the country. So when the lights go out in New York — or on the storm-savaged Jersey Shore or in tornado-hit Missouri or wherever — the orders come pouring in like a tidal surge.

It’s all part of what you might call the Mad Max Economy, a multibillion-dollar-a-year collection of industries that thrive when things get really, really bad. Weather radios, kerosene heaters, D batteries, candles, industrial fans for drying soggy homes — all are scarce and coveted in the gloomy aftermath of Hurricane Sandy and her ilk.

It didn’t start with the last few hurricanes, either. Modern Mad Max capitalism has been around a while, decades even, growing out of something like old-fashioned self-reliance, political beliefs and post-Apocalyptic visions. The cold war may have been the start, when schoolchildren dove under desks and ordinary citizens dug bomb shelters out back. But economic fears, as well as worries about climate change and an unreliable electronic grid have all fed it.

 Driven of late by freakish storms, this industry is growing fast, well beyond the fringe groups that first embraced it. And by some measures, it’s bigger than ever.

Businesses like Generac Power Systems, one of three companies in Wisconsin turning out generators, are just the start.

The market for gasoline cans, for example, was flat for years. No longer. “Demand for gas cans is phenomenal, to the point where we can’t keep up with demand,” says Phil Monckton, vice president for sales and marketing at Scepter, a manufacturer based in Scarborough, Ontario. “There was inventory built up, but it is long gone.”

Even now, nearly two weeks after the superstorm made landfall in New Jersey, batteries are a hot commodity in the New York area. Win Sakdinan, a spokesman for Duracell, says that when the company gave away D batteries in the Rockaways, a particularly hard-hit area, people “held them in their hands like they were gold.”

Sales of Eton emergency radios and flashlights rose 15 percent in the week before Hurricane Sandy — and 220 percent the week of the storm, says Kiersten Moffatt, a company spokeswoman. “It’s important to note that we not only see lifts in the specific regions affected, we see a lift nationwide,” she wrote in an e-mail. “We’ve seen that mindfulness motivates consumers all over the country to be prepared in the case of a similar event.”

Garo Arabian, director of operations at B-Air, a manufacturer based in Azusa, Calif., says he has sold thousands of industrial fans since the storm. “Our marketing and graphic designer is from Syria, and he says: ‘I don’t understand. In Syria, we open the windows.’ ”

But Mr. Arabian says contractors and many insurers know that mold spores won’t grow if carpeting or drywall can be dried out within 72 hours. “The industry has grown,” he says, “because there is more awareness about this kind of thing.”

Retailers that managed to stay open benefited, too. Steve Rinker, who oversees 11 Lowe’s home improvement stores in New York and New Jersey, says his stores were sometimes among the few open in a sea of retail businesses.

Predictably, emergency supplies like flashlights, lanterns, batteries and sump pumps sold out quickly, even when they were replenished. The one sought-after item that surprised him the most? Holiday candles. “If anyone is looking for holiday candles, they are sold out,” he says. “People bought every holiday candle we have during the storm.”

If the hurricane was a windfall for Lowe’s, its customers didn’t seem to mind. Rather, most appeared exceedingly grateful when Mr. Rinker, working at a store in Paterson, N.J., pointed them toward a space heater, or a gasoline can, that could lessen the misery of another day without power.

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Citing Affair, Petraeus Resigns as C.I.A. Director

WASHINGTON — David H. Petraeus, the director of the Central Intelligence Agency and one of America’s most decorated four-star generals, resigned on Friday after an F.B.I. investigation uncovered evidence that he had been involved in an extramarital affair.

Command Sergeant Major Marvin L. Hill

Administration and Congressional officials identified the woman with whom Gen. David H. Petraeus was having the affair as Paula Broadwell, right, the author of his biography.

Mark Wilson/Getty Images

David H. Petraeus in Washington in 2007.

Mr. Petraeus issued a statement acknowledging the affair after President Obama accepted his resignation and it was announced by the C.I.A. on Friday. The disclosure ended a triumphant re-election week for the president with an unfolding scandal.

Government officials said that the F.B.I. had investigated whether a computer used by Mr. Petraeus had been compromised. In the course of that inquiry, federal investigators discovered the relationship, officials said. It remained unclear Friday when the investigation began, how it evolved into an examination of Mr. Petraeus, and whether it was continuing.

Senior members of Congress were alerted to Mr. Petraeus’s impending resignation by intelligence officials about six hours before the C.I.A. announced his resignation. One Congressional official who was briefed on the matter said that Mr. Petraeus had been encouraged “to get out in front of the issue” and resign, and that he agreed.

As for how the affair came to light, the Congressional official said that “it was portrayed to us that the F.B.I. was investigating something else and came upon him. My impression is that the F.B.I. stumbled across this.”

Administration and Congressional officials identified the woman as Paula Broadwell, the author of a biography of Mr. Petraeus. Her book, “All In: The Education of General David Petraeus,” was published this year. Ms. Broadwell could not be reached for comment.

The Federal Bureau of Investigation did not inform the Senate and House Intelligence Committees about the inquiry until this week, according to Congressional officials, who noted that by law the panels — and especially their chairmen and ranking members — are supposed to be told about significant developments in the intelligence arena. The Senate committee plans to pursue the question of why it was not told, one official said.

The revelation of a secret inquiry into the head of the nation’s premier spy agency raised urgent questions about Mr. Petraeus’s 14-month tenure at the C.I.A. and the decision by Mr. Obama to elevate him to head the agency after leading the country’s war effort in Afghanistan. White House officials said they did not know about the affair until this week, when Mr. Petraeus informed them.

“After being married for over 37 years, I showed extremely poor judgment by engaging in an extramarital affair,” Mr. Petraeus said in his statement, expressing regret for his abrupt departure. “Such behavior is unacceptable, both as a husband and as the leader of an organization such as ours. This afternoon, the president graciously accepted my resignation.”

Mr. Petraeus’s admission and resignation represent a remarkable fall from grace for one of the most prominent figures in America’s modern military and intelligence community, a commander who helped lead the nation’s wartime activities in the decade after the Sept. 11 attacks and was credited with turning around the failing war effort in Iraq.

Mr. Petraeus almost single-handedly forced a profound evolution in the country’s military thinking and doctrine with his philosophy of counterinsurgency, focused more on protecting the civilian population than on killing enemies. More than most of his flag officer peers, he understood how to navigate Washington politics and news media, helping him rise through the ranks and obtain resources he needed, although fellow Army leaders often resented what they saw as a grasping careerism.

“To an important degree, a generation of officers tried to pattern themselves after Petraeus,” said Stephen Biddle, a military scholar at George Washington University who advised Mr. Petraeus at times. “He was controversial; a lot of people didn’t like him. But everybody looked at him as the model of what a modern general was to be.”

This article has been revised to reflect the following correction:

Correction: November 9, 2012

An earlier version of this article incorrectly stated that David H. Petraeus was expected to remain in President Obama’s cabinet. The C.I.A. director is not a cabinet member in the Obama administration.

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Groupon Earnings Miss Expectations on Weakness in Europe

SAN FRANCISCO (Reuters) — Groupon reported financial results late Thursday that fell short of Wall Street’s already cautious expectations, as the daily-deal company failed to turn around its struggling European business.

Groupon also confirmed that it had laid off about 80 employees, mainly in sales, as part of an effort to automate the way it handles its deals.

The company’s shares fell as low as $3.21 in after-hours trading, down as much as 18 percent from their closing price of $3.92. Groupon was the darling of investors during last year’s consumer dot-com boom in initial public offerings, but now it has shed more than 80 percent of its value since making its public debut at $20 a share.

Wall Street has grown uneasy about Groupon’s prospects as daily-deals fever wanes among consumers and merchants, and as growth rates sputter. Adding to the difficulties, the S.E.C. has been looking into Groupon’s accounting and disclosures, an area of controversy during its initial public offering.

Groupon reported third-quarter revenue of $568.6 million, compared with $430.2 million a year earlier. Analysts had expected revenue of $590 million, according to Thomson Reuters.

The company posted a quarterly net loss of $3 million, or break-even on a per-share basis, compared with a net loss of $54.2 million, or 18 cents a share, in the third quarter of 2011.

Andrew Mason, chief executive of Groupon, said a “solid performance” in North America was offset by weakness in Europe. International revenue, including Europe, grew 3 percent to $277 million; North American revenue surged 80 percent to $292 million.

Europe has been a particular problem for Groupon, partly because the sovereign debt crisis there has hurt demand for higher-price deals. Groupon was also offering steeper discounts, disappointing some merchants.

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Malaria Vaccine Candidate Produces Disappointing Results in Clinical Trial

The latest clinical trial of the world’s leading malaria vaccine candidate produced disappointing results on Friday. The infants it was given to had only about a third fewer infections than a control group.

But researchers said they wanted to press on, assuming they keep getting financial support, because the number of children who die of malaria is so great that even an inefficient vaccine can save thousands of lives.

Three shots of the vaccine, known as RTS, S or Mosquirix and produced by GlaxoSmithKline, gave babies fewer than 12 weeks old 31 percent protection against detectable malaria and 37 percent protection against severe malaria, according to an announcement by the company at a vaccines conference in Cape Town.

Last year, in a trial in children up to 17 months old, the same vaccine gave 55 percent protection against detectable malaria and 47 percent against severe malaria.

The new trial “is less than we’d hoped for,” Moncef Slaoui, chairman of research and development at Glaxo, said in a telephone interview. “But if a million babies were vaccinated, we would prevent 260,000 cases of malaria a year. This is a disease that kills 655,000 babies a year — 31 percent of that is a very large number.”

The company, which has already spent more than $300 million on the vaccine, wants to keep forging ahead, Mr. Slaoui said, “but it is not just our decision.”

It also depends on the PATH Malaria Vaccine Initiative, which has put more than $200 million of its Bill and Melinda Gates Foundation financing into the vaccine, and on the World Health Organization, which has helped talk seven African countries into allowing the vaccine to be tested on their children.

The Gates Foundation declined to say how much money it was ultimately prepared to spend on an imperfect vaccine; this set of trials is set to go into 2014.

“The efficacy came back lower than we had hoped, but developing a vaccine against a parasite is a very hard thing to do,” Bill Gates said in a prepared statement. “The trial is continuing, and we look forward to getting more data to help determine whether and how to deploy this vaccine.”

All the families in the trial were given insecticide-treated mosquito nets and encouraged to use them; 86 percent did, so the vaccine’s results were achieved on top of other anti-malaria measures.

RTS, S contains a protein found on the parasite’s surface that provokes an immune reaction. It was first identified decades ago by two New York University scientists, Ruth and Victor Nussenzweig. The vaccine was developed by Glaxo in Belgium and initially tested on American volunteers by the Walter Reed Army Institute of Research.

When the Gates Foundation began focusing on global health in the early part of this century, it was one of the first projects the foundation adopted. Different ways to make the vaccine more effective, including adding different boosters and giving more shots, are being experimented with. Other vaccines using different ways to provoke an immune reaction exist, but none are as far along in clinical trials.

Like an H.I.V. vaccine, one against malaria has proved an elusive goal. The parasite morphs several times, exhibiting different surface proteins as it goes from mosquito saliva into blood and then into and out of the liver. Also, even the best natural “vaccine” — catching the disease itself — is not very effective. While one bout of measles immunizes a child for life, it usually takes several bouts of malaria to confer even partial immunity. Pregnancy can cause women to stop being immune, and immunity can fade out if someone moves away from a malarial area — presumably because they no longer get “boosters” from repeated mosquito bites.

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Malaria Vaccine Candidate Produces Disappointing Results in Clinical Trial

The latest clinical trial of the world’s leading malaria vaccine candidate produced disappointing results on Friday. The infants it was given to had only about a third fewer infections than a control group.

But researchers said they wanted to press on, assuming they keep getting financial support, because the number of children who die of malaria is so great that even an inefficient vaccine can save thousands of lives.

Three shots of the vaccine, known as RTS, S or Mosquirix and produced by GlaxoSmithKline, gave babies fewer than 12 weeks old 31 percent protection against detectable malaria and 37 percent protection against severe malaria, according to an announcement by the company at a vaccines conference in Cape Town.

Last year, in a trial in children up to 17 months old, the same vaccine gave 55 percent protection against detectable malaria and 47 percent against severe malaria.

The new trial “is less than we’d hoped for,” Moncef Slaoui, chairman of research and development at Glaxo, said in a telephone interview. “But if a million babies were vaccinated, we would prevent 260,000 cases of malaria a year. This is a disease that kills 655,000 babies a year — 31 percent of that is a very large number.”

The company, which has already spent more than $300 million on the vaccine, wants to keep forging ahead, Mr. Slaoui said, “but it is not just our decision.”

It also depends on the PATH Malaria Vaccine Initiative, which has put more than $200 million of its Bill and Melinda Gates Foundation financing into the vaccine, and on the World Health Organization, which has helped talk seven African countries into allowing the vaccine to be tested on their children.

The Gates Foundation declined to say how much money it was ultimately prepared to spend on an imperfect vaccine; this set of trials is set to go into 2014.

“The efficacy came back lower than we had hoped, but developing a vaccine against a parasite is a very hard thing to do,” Bill Gates said in a prepared statement. “The trial is continuing, and we look forward to getting more data to help determine whether and how to deploy this vaccine.”

All the families in the trial were given insecticide-treated mosquito nets and encouraged to use them; 86 percent did, so the vaccine’s results were achieved on top of other anti-malaria measures.

RTS, S contains a protein found on the parasite’s surface that provokes an immune reaction. It was first identified decades ago by two New York University scientists, Ruth and Victor Nussenzweig. The vaccine was developed by Glaxo in Belgium and initially tested on American volunteers by the Walter Reed Army Institute of Research.

When the Gates Foundation began focusing on global health in the early part of this century, it was one of the first projects the foundation adopted. Different ways to make the vaccine more effective, including adding different boosters and giving more shots, are being experimented with. Other vaccines using different ways to provoke an immune reaction exist, but none are as far along in clinical trials.

Like an H.I.V. vaccine, one against malaria has proved an elusive goal. The parasite morphs several times, exhibiting different surface proteins as it goes from mosquito saliva into blood and then into and out of the liver. Also, even the best natural “vaccine” — catching the disease itself — is not very effective. While one bout of measles immunizes a child for life, it usually takes several bouts of malaria to confer even partial immunity. Pregnancy can cause women to stop being immune, and immunity can fade out if someone moves away from a malarial area — presumably because they no longer get “boosters” from repeated mosquito bites.

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Common Sense: At Martha Stewart Living, Martha May Be the Problem

Among America’s corporate leaders, there are surely few whose interests are more closely aligned with their shareholders’ than the homemaking icon Martha Stewart. She owns 26 million shares and controls nearly 90 percent of the voting rights of Martha Stewart Living Omnimedia. She’s the company’s nonexecutive chairwoman and serves on the board. Martha Stewart, the company, is inseparable from Martha Stewart, the person.

Her net worth is inextricably tied to the value of the shares. That would seem obvious to everyone except, perhaps, Ms. Stewart herself. She continues to collect lavish multimillion-dollar compensation and perks while her company teeters under the weight of huge losses, its shares trading for a fraction of their former value. The paradox is that if the stock had risen even $1 a share in recent years, Martha Stewart would be wealthier now than if she had taken only nominal compensation from the company.

“You’d think there’d be very little need for board oversight because of the strong alignment of the company’s interests with her personal wealth,” Paul Hodgson, a compensation expert and senior research associate at GMI Ratings, told me this week. “Everything should be pushing her to make sure the company succeeds. For some reason, that’s not happening.”

Last week, Ms. Stewart’s company reported a $50.7 million quarterly loss, a staggering amount considering it exceeded total revenue, which was just $43.5 million. That was a 17 percent drop from revenue in the same quarter last year. Although the loss included a $44.3 million noncash write-down related to the shrinking value of two of its magazines, the company until recently has been bleeding cash, which dropped from $38.5 million to just $17.4 million in the quarter. The company said it would lay off about 70 employees, 12 percent of its work force, and discontinue its stand-alone print version of the magazine Everyday Food.

None of this bad news has made much of a dent on Ms. Stewart’s own compensation. Her base annual pay rose from $1.7 million in 2009 to $2 million in 2010 and 2011, and she received a $3 million retention bonus when she signed her new contract in 2009. She gets an additional minimum of $2 million a year under an “intangible assets license agreement,” which gives the company the rights to “Martha Stewart’s lifestyle and the public perception of Martha Stewart’s lifestyle,” including such details as how she arranges her outdoor furniture.

Her corporate perks are well known, and she has long blurred the line between business and personal expenses. She submitted as a business expense the $17,000 cost of her now-infamous holiday trip to the Mexican luxury resort Las Ventanas al Paraiso. She arrived at the resort the day she dumped her shares in the biotechnology company ImClone upon learning, en route, that the company’s chief executive was trying to sell his shares ahead of a negative Food and Drug Administration decision on the company’s principal drug. (She settled charges of insider trading brought by the Securities and Exchange Commission after being convicted of making criminal false statements to cover up the reason for the sale.) Then she had her accountant tell her companion on the trip that she’d have to pay her “fair share” of the costs, according to testimony in her 2004 trial.

The company doesn’t break out Ms. Stewart’s reimbursed expenses, but general and administrative expenses amounted to a lofty $11 million in the last quarter. That number, of course, includes many expenses besides Ms. Stewart’s, like other executives’ salaries.

The company does reveal what it calls other compensation for Ms. Stewart, which in 2011 included a personal trainer and other expenses for personal fitness; a weekend driver; security services; fees for on-air appearances; unspecified personnel costs not otherwise reimbursed by the company; insurance premiums; and an unidentified charitable contribution, which added up to over $1 million.

Ms. Stewart also receives stock options, nearly $1.8 million worth in 2009 through 2011, though she has not received any options so far this year. Still, as Mr. Hodgson put it, “Why is she even getting stock options? Her interests are already thoroughly aligned with the company, given her ownership stake.” Moreover, the intangible license agreement “is very unusual,” Mr. Hodgson said.

All told, Ms. Stewart’s compensation was $9.8 million in 2009, $5.9 million in 2010 and $5.5 million in 2011, or $21.2 million over the last three years, even as the company was in a downward spiral. Just before Ms. Stewart got out of prison in 2005, her shares were trading at over $34 and she was a billionaire. After plunging during the financial crisis, they were above $8 a share in September 2009. They traded this week at about $2.80.

Asked about the issues raised in this column, a spokesman for Martha Stewart Living Omnimedia declined to comment and said Ms. Stewart had no comment.

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A Transfer of Power Begins in China

Military delegates arrived for the 18th Communist Party Congress at the Great Hall of the People in Beijing on Thursday. The weeklong meeting precedes the naming of China’s top leader, who will replace Hu Jintao. The meeting also introduces a new generation of party leaders.

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DealBook: Priceline.com to Buy Kayak for $1.8 Billion

Just months after going public, Kayak Software has been snapped up by a rival.

On Thursday, Priceline.com, a travel company from an earlier Internet age, agreed to buy Kayak, a younger competitor, for $1.8 billion in cash and stock.

The acquisition, the largest in Priceline’s history, could provide a new source of revenue for the company.

Priceline, once a highflying company that survived the dot-com bubble in the late 1990s, acts as an online travel agent. It collects fees and commissions on reservations. Kayak, which was started in 2004, allows users to search other sites to compare prices. It makes most of its money from referrals and advertising.

“I see Kayak serving as a global entree into the advertising market for Priceline,” said Daniel Kurnos, an analyst at the Benchmark Company. He said the deal could help Priceline “with their search rankings and give them some additional expertise in the technology department.”

The companies’ global ambitions are also symbiotic. Priceline, which also owns the Asian travel site Agoda.com, has been pushing into new markets overseas. International reservations accounted for 78 percent of its total last year.

In the third quarter, Kayak’s revenue from outside the United States amounted to $17.3 million, a 40 percent increase from the period a year earlier, the company said when it reported earnings on Thursday. Overall third-quarter revenue rose 29 percent, to $78.6 million.

“We believe we can be helpful with Kayak’s plans to build a global online travel brand,” Priceline’s chief executive, Jeffery H. Boyd, said in a statement.

The deal is yet another corporate evolution for Kayak. In a matter of months, the travel search site has gone from a privately held start-up to a publicly traded company to a unit operating under the umbrella of Priceline.

Following a long path to the public markets that started in 2010, Kayak got a relatively warm reception from investors in its July debut. Just months after the troubled offering of Facebook, shares of Kayak surged on their first day of trading, closing at roughly $33. Since then, the stock has fluctuated.

Priceline will pay roughly $40 a share for Kayak. At that level, the acquisition represents a 29 percent premium over Kayak’s closing price of $31.04 a share on Thursday. The transaction is expected to close in the first quarter of next year.

“We’re excited to join the world’s premier online travel company,” Steve Hafner, Kayak’s chief executive, said in a statement.

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Ask an Expert: Wondering About Alzheimer’s? Ask Here

This week’s Ask the Expert features Dr. P. Murali Doraiswamy, who will answer questions related to Alzheimer’s disease and memory loss. He is a professor of psychiatry at Duke University Medical Center and an author of “The Alzheimer’s Action Plan.” Dr. Doraiswamy has also served as an adviser to government agencies, advocacy groups and businesses.

About five million Americans today live with Alzheimer’s disease, and a new diagnosis is made about every 70 seconds. Cases are expected to triple over the coming decades as baby boomers age.

Misperceptions and misdiagnoses are common about Alzheimer’s, which ranks second to only cancer among diseases that adults fear the most. Many people do not understand that there are dozens of causes for memory loss besides Alzheimer’s, including many that can be fully reversed if caught early.

Among the questions Dr. Doraiswamy is prepared to answer:

What are the best tests to determine if it is or isn’t Alzheimer’s?

How do you determine your own risk?

What are the family-care options? Medications for memory? Medications for behavior problems? Preventive strategies?

What has been learned from the latest clinical trials?

How can you improve your memory?

Please leave your questions in the comments section. Answers will be posted on Wednesday.

You can follow Booming via RSS here or visit nytimes.com/booming.

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