Wednesday, February 10, 2010

Food Rules From Michael Pollan Worth Following

Personal Health - Food Rules From Michael Pollan Worth Following - NYTimes.com:

"In the more than four decades that I have been reading and writing about the findings of nutritional science, I have come across nothing more intelligent, sensible and simple to follow than the 64 principles outlined in a slender, easy-to-digest new book called “Food Rules: An Eater’s Manual,” by Michael Pollan.

Mr. Pollan is not a biochemist or a nutritionist but rather a professor of science journalism at the University of California, Berkeley. You may recognize his name as the author of two highly praised books on food and nutrition, “In Defense of Food: An Eater’s Manifesto” and “The Omnivore’s Dilemma.” (All three books are from Penguin.)

If you don’t have the time and inclination to read the first two, you can do yourself and your family no better service than to invest $11 and one hour to whip through the 139 pages of “Food Rules” and adapt its guidance to your shopping and eating habits.

Chances are you’ve heard any number of the rules before. I, for one, have been writing and speaking about them for decades. And chances are you’ve yet to put most of them into practice. But I suspect that this little book, which is based on research but not annotated, can do more than the most authoritative text to get you motivated to make some important, lasting, health-promoting and planet-saving changes in what and how you eat.

Reasons to Change

Two fundamental facts provide the impetus Americans and other Westerners need to make dietary changes. One, as Mr. Pollan points out, is that populations who rely on the so-called Western diet — lots of processed foods, meat, added fat, sugar and refined grains — “invariably suffer from high rates of the so-called Western diseases: obesity, Type 2 diabetes, cardiovascular disease and cancer.” Indeed, 4 of the top 10 killers of Americans are linked to this diet.

As people in Asian and Mediterranean countries have become more Westernized (affluent, citified and exposed to the fast foods exported from the United States), they have become increasingly prone to the same afflictions.

The second fact is that people who consume traditional diets, free of the ersatz foods that line our supermarket shelves, experience these diseases at much lower rates. And those who, for reasons of ill health or dietary philosophy, have abandoned Western eating habits often experience a rapid and significant improvement in their health indicators.

I will add a third reason: our economy cannot afford to continue to patch up the millions of people who each year develop a diet-related ailment, and our planetary resources simply cannot sustain our eating style and continue to support its ever-growing population.

In his last book, Mr. Pollan summarized his approach in just seven words: “Eat food. Not too much. Mostly plants.” The new book provides the practical steps, starting with advice to avoid “processed concoctions,” no matter what the label may claim (“no trans fats,” “low cholesterol,” “less sugar,” “reduced sodium,” “high in antioxidants” and so forth).

As Mr. Pollan puts it, “If it came from a plant, eat it; if it was made in a plant, don’t.”

Do you already avoid products made with high-fructose corn syrup? Good, but keep in mind, sugar is sugar, and if it is being added to a food that is not normally sweetened, avoid it as well. Note, too, that refined flour is hardly different from sugar once it gets into the body.

Also avoid foods advertised on television, imitation foods and food products that make health claims. No natural food is simply a collection of nutrients, and a processed food stripped of its natural goodness to which nutrients are then added is no bargain for your body.

Those who sell the most healthful foods — vegetables, fruits and whole grains — rarely have a budget to support national advertising. If you shop in a supermarket (and Mr. Pollan suggests that wherever possible, you buy fresh food at farmers’ markets), shop the periphery of the store and avoid the center aisles laden with processed foods. Note, however, that now even the dairy case has been invaded by products like gunked-up yogurts.

Follow this advice, and you will have to follow another of Mr. Pollan’s rules: “Cook.”

“Cooking for yourself,” he writes, “is the only sure way to take back control of your diet from the food scientists and food processors.” Home cooking need not be arduous or very time-consuming, and you can make up time spent at the stove with time saved not visiting doctors or shopping for new clothes to accommodate an expanding girth.

Although the most wholesome eating pattern consists of three leisurely meals a day, and preferably a light meal at night, if you must have snacks, stick to fresh and dried fruits, vegetables and nuts, which are naturally loaded with healthful nutrients. I keep a dish of raisins and walnuts handy to satisfy the urge to nibble between meals. I also take them along for long car trips. Feel free to use the gas-station restroom, but never “get your fuel from the same place your car does,” Mr. Pollan writes.

Treating Treats as Treats

Perhaps the most important rules to put into effect as soon as possible are those aimed at the ever-expanding American waistline. If you eat less, you can afford to pay more for better foods, like plants grown in organically enriched soil and animals that are range-fed.

He recommends that you do all your eating at a table, not at a desk, while working, watching television or driving. If you’re not paying attention to what you’re eating, you’re likely to eat more than you realize.

But my favorite tip, one that helped me keep my weight down for decades, is a mealtime adage, “Stop eating before you’re full” — advice that has long been practiced by societies as diverse as Japan and France. (There is no French paradox, by the way: the French who stay slim eat smaller portions, leisurely meals and no snacks.)

Practice portion control and eat slowly to the point of satiation, not fullness. The food scientists Barbara J. Rolls of Penn State and Brian Wansink of Cornell, among others, have demonstrated that people eat less when served smaller portions on smaller plates. “There is nothing wrong with special occasion foods, as long as every day is not a special occasion,” Mr. Pollan writes. “Special occasion foods offer some of the great pleasures of life, so we shouldn’t deprive ourselves of them, but the sense of occasion needs to be restored.”

Here is where I can make an improvement. Ice cream has been a lifelong passion, and even though I stick to a brand lower in fat and calories than most, and limit my portion to the half-cup serving size described on the container, I indulge in this treat almost nightly. Perhaps I’ll try the so-called S policy Mr. Pollan says some people follow: “No snacks, no seconds, no sweets — except on days that begin with the letter S.”"

Tuesday, January 26, 2010

Sleep As the Key to Happiness and Peak Performance

Arianna Huffington: Sleep Challenge 2010: Sleep As the Key to Happiness and Peak Performance:

"Tony Schwartz, President and CEO of The Energy Project, whose new book, The Way We're Working Isn't Working: The Four Forgotten Needs that Energize Great Performance (coming out in May), has a whole chapter on the importance of sleep....

'the way we are working (and the way the world works) isn't working, for most people or most organizations.' And he singles out the role sleep plays in making people happier, healthier, and more productive.

'No single behavior,' writes Schwartz, 'more fundamentally influences our effectiveness in waking life than sleep... sleep may well be more critical to our well being than diet, exercise and even heredity.'

Sleep is so vital to success in everything we do, Schwartz titles his chapter about it "Sleep or Die." In it, he cites the role lack of sleep played in numerous high-profile disasters -- including the Three Mile Island meltdown, the Exxon Valdez oil spill, and the explosion of the Challenger space shuttle -- and points out that "Amnesty International lists prolonged sleep deprivation as a form of torture, and it has widely been used as an interrogation tactic."

He also highlights the fact that sleep isn't just a time for our bodies to rest -- it's also a time for learning. "Sleep is not simply cognitively restorative," he writes, "but also a time during which considerable learning occurs. Although the acquisition of knowledge occurs only during waking life, there is evidence that we process, consolidate and stabilize memory during sleep." So, if you still look at sleep only as "down time," you need to think again. Sleep is also practice time for a wide variety of mental skills -- and the full 90-minute sleep cycle allows for different kinds of learning. In our deepest sleep, according to Schwartz, "we appear to process and consolidate fact-based information, such as a new language or the capital of a state." REM sleep, meanwhile, "appears to play a key role in remembering how to do an activity, such as typing or driving a car." And visual learning is processed both in deep (slow-wave) and REM sleep....

...he puts getting enough sleep at the apex of the things we can do to achieve peak performance."

The secret about drugs is that they only work in about half of the people who take them

Making Personalized Medicine Pay - BusinessWeek:

"The dirty little secret about drugs is that they only work in about half of the people who take them. So says an educational nonprofit called the Personalized Medicine Coalition, and many drug executives concede as much. Of the $292 billion spent in the U.S. on prescription drugs in 2008, as much as $145 billion went to medications that didn't help individual patients, said Jerel Davis, project manager at McKinsey, at a recent conference. And billions more are being spent to treat adverse drug reactions and other complications. "When you look at the data, it's shocking," says Dr. Robert S. Epstein, chief medical officer at Medco Health Solutions (MHS), a $51 billion company that manages drug prescriptions for 60 million Americans.

Researchers know how to solve this problem. First, figure out the differences between those patients who respond to a drug and those who don't, then treat only to those who will benefit. But this personalized medicine approach 'has been slower to develop than we thought 10 years ago,' says Richard K. Schatzberg, CEO of Generation Health, a startup that offers targeted medicine services. Lack of enthusiasm in the drug industry is a big reason; companies would lose billions of dollars if only those who actually benefit were to use such blockbuster drugs as antidepressants, arthritis medicines, and cholesterol pills...."

Saturday, January 09, 2010

Importance of sleep

Mark Hyman, MD: Sleep Tips: How To Sleep Better, Lose Weight, And Live Longer:

"You can lose weight without changing what you eat or doing one minute of exercise! It's a bold claim. And don't get me wrong: Nutrition and exercise are important! But there's another key to weight loss -- and most people don't even know about it. It's sleep.

In fact, besides eating whole foods and moving your body, getting enough sleep is the most important thing you can do for your health. On the flip side, sleep deprivation makes you fat -- AND leads to depression, pain, heart disease, diabetes, and much more."


Mark Hyman, M.D. practicing physician and founder of The UltraWellness Center is a pioneer in functional medicine. Dr. Hyman is now sharing the 7 ways to tap into your body's natural ability to heal itself.

Friday, October 30, 2009

Does the Vaccine Matter?

Does the Vaccine Matter? - The Atlantic (November 2009):

"[S]ome flu experts are challenging the medical orthodoxy and arguing that for those most in need of protection, flu shots and antiviral drugs may provide little to none....

When Lisa Jackson, a physician and senior investigator with the Group Health Research Center, in Seattle, began wondering aloud to colleagues if maybe something was amiss with the estimate of 50 percent mortality reduction for people who get flu vaccine, the response she got sounded more like doctrine than science. “People told me, ‘No good can come of [asking] this,’” she says. “‘Potentially a lot of bad could happen’ for me professionally by raising any criticism that might dissuade people from getting vaccinated, because of course, ‘We know that vaccine works.’ This was the prevailing wisdom.”

The history of flu vaccination suggests other reasons to doubt claims that it dramatically reduces mortality. In 2004, for example, vaccine production fell behind, causing a 40 percent drop in immunization rates. Yet mortality did not rise. In addition, vaccine “mismatches” occurred in 1968 and 1997: in both years, the vaccine that had been produced in the summer protected against one set of viruses, but come winter, a different set was circulating. In effect, nobody was vaccinated. Yet death rates from all causes, including flu and the various illnesses it can exacerbate, did not budge...

The most vocal—and undoubtedly most vexing—critic of the gospel of flu vaccine is the Cochrane Collaboration’s Jefferson, who’s also an epidemiologist trained at the famed London School of Tropical Hygiene, and who, in Lisa Jackson’s view, makes other skeptics seem “moderate by comparison.” Among his fellow flu researchers, Jefferson’s outspokenness has made him something of a pariah....

“Tom Jefferson has taken a lot of heat just for saying, ‘Here’s the evidence: it’s not very good,’” says Majumdar. “The reaction has been so dogmatic and even hysterical that you’d think he was advocating stealing babies.” Yet while other flu researchers may not like what Jefferson has to say, they cannot ignore the fact that he knows the flu-vaccine literature better than anyone else on the planet. He leads an international team of researchers who have combed through hundreds of flu-vaccine studies. The vast majority of the studies were deeply flawed, says Jefferson. “Rubbish is not a scientific term, but I think it’s the term that applies.” Only four studies were properly designed to pin down the effectiveness of flu vaccine, he says, and two of those showed that it might be effective in certain groups of patients, such as school-age children with no underlying health issues like asthma. The other two showed equivocal results or no benefit.

Flu researchers have been fooled into thinking vaccine is more effective than the data suggest, in part, says Jefferson, by the imprecision of the statistics....

As with vaccines, the scientific evidence for Tamiflu and Relenza is thin at best. In its general-information section, the CDC’s Web site tells readers that antiviral drugs can “make you feel better faster.” True, but not by much. On average, Tamiflu (which accounts for 85 to 90 percent of the flu antiviral-drug market) cuts the duration of flu symptoms by 24hours in otherwise healthy people. In exchange for a slightly shorter bout of illness, as many as one in five people taking Tamiflu will experience nausea and vomiting. About one in five children will have neuropsychiatric side effects, possibly including anxiety and suicidal behavior....

Why, then, has the federal government stockpiled millions of doses of antivirals, at a cost of several billion dollars? And why are physicians being encouraged to hand out prescriptions to large numbers of people, without sound evidence that the drugs will help? The short answer may be that public-health officials feel they must offer something, and these drugs are the only possible remedies at hand. “I have to agree with the critics the antiviral question is not cut-and-dried,” says Fauci. “But [these drugs are] the best we have.” The CDC’s Nancy Cox also acknowledges that the science is not as sound as she might like, but the government still recommends their use. And as with vaccines, she considers additional randomized placebo-controlled trials of the antiviral drugs to be “unethical” and thus out of the question....

The annals of medicine are littered with treatments and tests that became medical doctrine on the slimmest of evidence, and were then declared sacrosanct and beyond scientific investigation. In the 1980s and ’90s, for example, cancer specialists were convinced that high-dose chemotherapy followed by a bone-marrow transplant was the best hope for women with advanced breast cancer, and many refused to enroll their patients in randomized clinical trials that were designed to test transplants against the standard—and far less toxic—therapy. The trials, they said, were unethical, because they knew transplants worked. When the studies were concluded, in 1999 and 2000, it turned out that bone-marrow transplants were killing patients. Another recent example involves drugs related to the analgesic lidocaine. In the 1970s, doctors noticed that the drugs seemed to make the heart beat rhythmically, and they began prescribing them to patients suffering from irregular heartbeats, assuming that restoring a proper rhythm would reduce the patient’s risk of dying. Prominent cardiologists for years opposed clinical trials of the drugs, saying it would be medical malpractice to withhold them from patients in a control group. The drugs were widely used for two decades, until a government-sponsored study showed in 1989 that patients who were prescribed the medicine were three and a half times as likely to die as those given a placebo....

As it stands, more than 50 percent of health-care workers say they do not intend to get vaccinated for swine flu and don’t routinely get their shots for seasonal flu, in part because many of them doubt the vaccines’ efficacy....

“There’s no worse place to go than the hospital during flu season,” says Majumdar. Those who don’t have the flu are more likely to catch it there, and those who do will spread it around, he says. “But we don’t tell people this.”

All of which leaves open the question of what people should do when faced with a decision about whether to get themselves and their families vaccinated. There is little immediate danger from getting a seasonal flu shot, aside from a sore arm and mild flu-like symptoms. The safety of the swine flu vaccine remains to be seen. In the absence of better evidence, vaccines and antivirals must be viewed as only partial and uncertain defenses against the flu. And they may be mere talismans. By being afraid to do the proper studies now, we may be condemning ourselves to using treatments based on illusion and faith rather than sound science."

Wednesday, September 23, 2009

Lack of Sleep Increases the Risk of Catching a Cold

Really? - The Claim - Lack of Sleep Increases the Risk of Catching a Cold. - Question - NYTimes.com:

"THE FACTS As cold season approaches, many Americans stock up on their vitamin C

and echinacea. But heeding the age-old advice about catching up on sleep might be more important.

Studies have demonstrated that poor sleep and susceptibility to colds go hand in hand, and scientists think it could be a reflection of the role sleep plays in maintaining the body’s defenses.

In a recent study for The Archives of Internal Medicine, scientists followed 153 men and women for two weeks, keeping track of their quality and duration of sleep. Then, during a five-day period, they quarantined the subjects and exposed them to cold viruses. Those who slept an average of fewer than seven hours a night, it turned out, were three times as likely to get sick as those who averaged at least eight hours.

Sleep and immunity, it seems, are tightly linked. Studies have found that mammals that require the most sleep also produce greater levels of disease-fighting white blood cells — but not red blood cells, even though both are produced in bone marrow and stem from the same precursor. And researchers at the Max Planck Institute for Evolutionary Anthropology have shown that species that sleep more have greater resistance against pathogens.

“Species that have evolved longer sleep durations,” the Planck scientists wrote, “appear to be able to increase investment in their immune systems and be better protected.”

THE BOTTOM LINE: Research suggests that poor sleep can increase susceptibility to colds."