Currently browsing posts about: Fruits-and-vegetables

I got several calls this week about a new study from the University of Washington arguing that because of the way foods are subsidized, it will cost everyone nearly $400 a year to follow the recommendations of the government’s MyPlate food guide. 

The Seattle group calculates the cost of food per calorie.  By this measure, the price of fruits and vegetables is exceedingly high compared to the cost of junk food.  Fruits and vegetables do not have many calories for their weight.

The Commerce department tracks the indexed price of foods.  Its data show that the indexed price of fresh produce increased by 40% ince 1980 whereas the price of sodas and processed foods has declined by 10-30%.  (The easiest place to see their charts is in New York Times articles from a couple of years ago.  Click here and also here).

USDA economists have produced a similar chart:

Other USDA economists, however, argue that price trends for fruits, vegetables, and junk foods are really no different, and that the data shown in the figure overstate the apparent difference.

Nevertheless, the Seattle paper got a lot of attention, and rightly so.  One of my calls was from David Freeman of CBS News who said he was hearing lots of complaints that the study promoted a “nanny state” because it blamed bad eating habits on the government.  My quotes:

“It’s a common misconception that food choices are solely a matter of personal responsibility,” Dr. Marion Nestle, professor of nutrition, food studies, and public health at New York University and an outspoken critic of the fast food industry, told CBS News. “People are hugely influenced by the price of food. If you don’t have any money and go into the store to buy some fresh fruits, you might decide that it’s cheaper to have a couple of fast food hamburgers.”

And those who can afford healthy food may lack the time or the necessary food-preparation skills, Dr. Nestle said.

Government-sponsored cooking classes and kitchen equipment may not be in the offing. But Dr. Monsivais and Dr. Nestle agreed that federal agriculture policies could do more to encourage healthy eating. For example, some of the federal farm subsidies now directed to producers of corn, soybeans, and other crops used to make fast and processed foods could be redirected to growers of fruits and vegetables.

“What’s the matter with that?” Dr. Nestle said. “I can’t think of a thing.”

The Environmental Working Group (EWG) has just published its 2011 guide to the most and least pesticide-laden fruits and vegetables.

The #1 “dirtiest”?  Apples.  The remedy?  Buy from the EWG “clean 15” list or buy organic.

The “dirty dozen” list, in order: Apples, Celery, Strawberries, Peaches, Spinach, Imported nectarines, Imported grapes, Sweet bell peppers, Potatoes, Domestic blueberries, Lettuce, Kale/collard greens.

The “clean 15” list of foods with the least pesticides: Onions, Sweet corn, Pineapples, Avocados, Asparagus, Sweet peas, Mangoes, Eggplant, Domestic cantaloupe, Kiwifruit, Cabbage, Watermelon, Sweet potatoes, Grapefruit, Mushrooms

How much should you worry about pesticides on foods?  As one reader asked,

Is it better to eat conventional fruits (cherries, berries and apples) and other veggies (peppers) that are on the “dirty” vegetable list or forego them altogether?

This is not an easy question to answer.  EWG recognizes that the science linking pesticides to health problems is limited (this is an understatement).  EWG bases its rankings on data published by USDA and FDA.  It considers:

• Percent of samples tested with detectable pesticides
• Percent of samples with two or more pesticides
• Average number of pesticides found on a single sample
• Average amount (level in parts per million) of all pesticides found
• Maximum number of pesticides found on a single sample
• Total number of pesticides found on the commodity

EWG explains that its

Shopper’s Guide is not built on a complex assessment of pesticide risks but instead reflects the overall pesticide loads of common fruits and vegetables. This approach best captures the uncertainties of the risks of pesticide exposure and gives shoppers confidence that when they follow the guide they are buying foods with consistently lower overall levels of pesticide contamination.

Most available research supports the health benefits of eating fruits and vegetables regardless of their pesticide loads.  Ken Cook, the president of EWG says:

We recommend that people eat healthy by eating more fruits and vegetables, whether conventional or organic,” says Ken Cook, president and founder of Environmental Working Group. “But people don’t want to eat pesticides with their produce if they don’t have to. And with EWG’s guide, they don’t.”

By EWG calculations, you can lower your pesticide intake by 92% if you avoid the dirty dozen.  No wonder.  How’s this for an observation: “Hot peppers had been treated with as many as 97 pesticides, followed by cucumbers (68) and greens (66).”  Who knew?

Where is the produce industry in all of this?  EWG reports that produce trade associations are working hand-in-glove with the pesticide industry to attempt to keep information about these chemicals out of the public eye.

I wish more research existed on the dose-response effects of pesticides and on their long-term effects on health, especially in children.  I cannot imagine that pesticides are good for health.  In high doses, they are demonstrably harmful to farm workers.

But what about the low doses on fruits and vegetables?  Here, the evidence for long-term harm is weak, uncertain, and unhelpful.

What to do?

On the personal side: if you want to avoid eating pesticides, you can stick with the EWG 15.  Washing produce before eating it is always a good idea even if it doesn’t get rid of all of the chemicals (USDA studies are done on washed produce).  When in doubt, buy organic.

As for the political, if ever there was a situation where more research was needed, this is it.  And isn’t it time for industrial food producers to find ways to use fewer pesticides?  Let the produce trade associations know that you don’t like their defense of potentially harmful chemicals and that you much prefer organic.

Addition, June 16: For anyone interested, here are the USDA’s pesticide announcements for the new data:

Press release

Consumer factsheet

Report executive summary

A reader, Jeff Harpell, comments on my scheduled talk in Barcelona:

I lived in Barcelona last year and the year before….While they are becoming more influenced by American fast food, having both parents work, and buying more from one stop food markets, the lifestyle, social support systems, i.e., healthcare and eating habits still are very different from the USA

….I suspect that the Catalonians are concerned about their citizens’ heading down a path of bad eating habits and how to prevent them. Any thoughts to share?

Three first impressions:

1.  The tourist bureau on La Rambla gives out a free city map courtesy of McDonald’s.  The map helpfully identifies the location of all of the McDonald’s outlets in Barcelona, and its such a relief to know that you don’t have to go far to find one.  I counted at least 10.

2.  The Carrefour supermarket has a meat section unlike any supermarket meat section in the United States. Those unwrapped hams are not cheap (yes, that’s 79 Euros, nearly $140, but it’s a big ham).  Leaving the ham attached to the hoof is an interesting touch.  I can only imagine what the New York City health inspectors might say about them.

3.  The Boqueria open-air food market has the most beautiful cut fruit for sale—something like this would make getting those daily fruit servings a real treat.

More to come!

I haven’t seem much comment on what’s happening with Center for Food Safety v. Vilsack, a suit to prevent planting of genetically modified (GM) sugar beets because USDA allowed them to be grown without filing an Environmental Impact Statement (EIS).

This is kind of after-the-fact because Monsanto’s GM sugar beets have been planted widely for the last five years and now comprise 95% of the sugar beet crop in the U.S.

As the Center for Food Safety explains,

The court outlined the many ways in which GE sugar beets could harm the environment and consumers, noting that containment efforts were insufficient and past contamination incidents were “too numerous” to allow the illegal crop to remain in the ground. In his court order, Judge White noted, “farmers and consumers would likely suffer harm from cross-contamination” between GE sugar beets and non-GE crops. He continued, “the legality of Defendants’ conduct does not even appear to be a close question,” noting that the government and Monsanto tried to circumvent his prior ruling, which made GE sugar beets illegal.

No surprise, Monsanto is appealing and is likely to be joined by the government in the appeal.  Food Safety News quotes a Monsanto spokesman:

With due respect, we believe the court’s action overlooked the factual evidence presented that no harm would be caused by these plantings, and is plainly inconsistent with the established law as recently announced by the U.S. Supreme Court,” said David Snively, general counsel for Monsanto, in a news release….The issues that will be appealed are important to all U.S. farmers who choose to plant biotech crops…We will spare no effort in challenging this ruling on the basis of flawed legal procedure and lack of consideration of important evidence.”

Food Safety News also reports that a Washington state apple grower has petitioned USDA to allow it to market a GM apple engineered to resist browning.

But wait.  I’m confused.  Isn’t the FDA supposed to be the agency that approves the planting of GM foods?

This sent me right to the FDA site that summarizes GM varieties that are permitted to be planted (“completed consultations“).  I see papayas and cantaloupe on the list, but not a single apple variety.

How can this company market a GM variety of apples if the FDA hasn’t approved it?  Can anyone explain what’s going on here?  Thanks.

Update December 3:  A judge in San Francisco ordered GM sugar beets planted on 256 acres to be destroyed.  USDA is appealing.  And now everyone is worried about sugar shortages.  Oh dear.

This must be the season for reports on eating fruit and vegetables (see November 11 post).  Now, the National Fruit & Vegetable Alliance (NFVA), a public-private partnership to promote greater intake of these foods, has issued a Report Card. Here’s the Executive Summary and the Full Report Card.

No surprise, but average fruit and vegetable consumption is still way below recommended levels.

• Only 6% of individuals reach the target for vegetables
• Only 8% achieve the target for fruit
• Although food away from home accounts for a third of calorie intake, it accounts for only 11% of fruit and vegetable intake

Here are some of the Report Card grades:

• An “A” goes to the WIC Fruit and Vegetable Vouchers program, which recently broadened the program to allow fruits and vegetables that previously were excluded.
• A “C” goes to school food and restaurant menus, which are making only slight progress.
• An”F” goes to the healthy food advertising category, since ads for healthier foods are decreasing.

USA Today has a story on this report, which also identifies the most popular of these foods.  In case you were wondering, the top four fruits are Apples,  Bananas,  Strawberries, and Grapes.  The top four vegetables, according to this survey, are Broccoli, Corn, Green beans, and Carrots (I’m not sure I believe this list).

And finally, New York City reports that its Food Stamp users received more than $200,000 in fresh produce coupons for farmers markets in 2010.  That, at least, sounds like genuine progress.

Eat them like junk food! That’s the slogan of the new, over-the-top advertising campaign for “baby” carrots. I put “baby” in quotes because they aren’t.

I hate to be the one to break this to you but baby carrots are plain old ordinary adult carrots, cut and scraped into baby-size pieces.

Mind you, I’m a nutritionist and we do love carrots. And the CDC says only about one-quarter of Americans eat three servings of vegetables a day.

But $25 million to sell them on the basis of sex (I’m not kidding) or, violence (sigh)?

Well, at least they aren’t marketing these to kids.  For that, we have to go back a few years to the Sponge Bob “baby” carrots of 2006 or so (see below).  I haven’t seen those packages lately.  Guess that idea didn’t work.

Will this new campaign work any better?

[Thanks to Michael Bulger for sending the links.]

Nothing about nutrition is simple.

I was intrigued by the Observatory column in the New York Times last week.  USDA researchers showed that supermarket spinach stored under continuous fluorescent light retained more vitamins than spinach stored in the dark for at least 9 days.  Their hypothesis: the light promotes continued photosynthesis and protects against degradation.

I was curious to know whether they measured vitamin C.  I checked the article in the Journal of Agricultural and Food Chemistry (February 2010, DOI: 10.1021/jf903596v).  Indeed they did.  This seems odd because this vitamin is well known to be degraded by light.  That is why orange juice is usually stored in opaque containers.  One explanation might be that orange juice is stored a lot longer than 9 days.

Cooking also destroys vitamin C.  While I was looking for that article I came across this one, which describes experiments looking at the effects of common cooking practices (boiling, microwaving, and steaming) on beneficial antioxidants and phytochemicals in Brussels sprouts.

Steaming increased phytochemicals in fresh and frozen sprouts.  Boiling did too, but only in the fresh vegetables.  Cooking reduced phytochemical content in frozen samples.  Microwaving was the best cooking method for retaining color and vitamin activity.  As expected, all cooking methods destroyed vitamin C.

So what to make of this?  Eat a mixture of cooked and uncooked vegetables and the vitamins will take care of themselves.  If you do cook, steaming is great and microwaving is better for preserving vitamin activity.  For vitamin C, raw wins every time.

Happy weekend!