Showing posts with label Probiotics. Show all posts
Showing posts with label Probiotics. Show all posts

Thursday, June 30, 2011

AS USUAL, THE KIDS PREFER MOM'S!


Fitz, the "fruit guy"

Not only did Ashna try out the food, but one of her friends participated.  I'm always one to encourage kids to to put their "two cents" in, so even though it is summer, I asked Sydney to give her opinion by writing an essay.  Here  is what she had to say.   
                                                                                      
Easy Fruity Recipes
With the new summer heat, refreshing fruit is beginning to make its way to the top of our snacking list. Since sweet, fresh fruit is now in season, making summer specialties like fruit salad, frulatti, and banana frappes are easy-to-make summer treats. I had a chance to critique different versions of each of these recipes.

"B"                     "A"

First I tried two different bowls of fruit salad and was told to evaluate all aspects of both. I tried “Bowl A” first. Even before scooping up a generous serving, I noticed that the fruit was bright, and seems artfully cut and arranged. However, upon eating the fruit, I found that it was slightly mushy and not as brightly flavored as the colors made it seem. When I tried the “Bowl B”, I was instantly gratified with a fresh, sweet burst of flavor from firmer, juicier fruit than found in the “Bowl A”. However, the fruit of the “Bowl B” was less carefully presented than its counterpart; it seemed to be thrown in haphazardly, and the fruit was cut into uneven chunks. Upon careful examination of the pros and cons of each fruit salad, I found that I liked the “Bowl B” better. Although presentation is important for any dish, flavor is the critical tipping point for any taste testing. Before going into this tasting, I didn’t think that the two fruit salads would be any different; after all, it was the same fruit for both! But I surprised myself by noticing distinct differences between the two.
Now, everybody has had fruit salad before, but have you ever heard of a frulatto? No? Well, neither had I, before this. But I was glad that I got to try it. I tried various frulatti with different types of dairy product. We started out with two frulatti made with milk—one with nonfat and one with whole. Both frulatti made with milk had a slightly gritty texture from the ice and the fruit. The frulatto with skim milk was more watery and not very rich, while the one with whole milk was more full-bodied, but still not creamy and smooth. I then tried frulatti made with yogurt. All of these frulatti were smooth and thicker than the ones made with milk. I first tried one made with a plain, slightly sour yogurt, which was much creamier and smooth than the ones made with milk, but the tang of the yogurt did not go well with the sweetness of the fruit. Next, I tried one made with vanilla yogurt. This one was my favorite frulatto at this point in the tasting. It was rich creamy and smooth, and was sweeter than the one made with plain yogurt. Because I complained about the tanginess of the plain yogurt and praised the sweetness of the vanilla yogurt, I then tried one more; the final frulatto we tried had plain yogurt, and extra sugar added in. This was my favorite of all of the frulatti: it didn’t have the vanilla flavor to distract from the flavor of the fruit; it was rich, smooth, and creamy; and the intense flavor of the fruit was enhanced by the creamy sweetness of the yogurt.
Finally I got to try the banana frappes. My reviews of the different versions were very similar to the ones of the frulatti. The frappes made with milk were thinner and less full bodied than the ones made with yogurt. They were not as smooth, especially the one made with nonfat milk, which seemed slightly chunky and not well-incorporated. The sourness of the plain yogurt did not go well with the banana, much like the frulatti. However, the vanilla flavor of the vanilla yogurt complimented the banana rather than detract from it. It was sweet, creamy, and smooth, with lots of fruit flavor. My favorite frappe was the one made with vanilla yogurt.



Dr. Vicki Again. 
So there you have it.  For you parents out there who are letting fast food joints and restaurants intimidate you from cooking for your kids, GET BACK IN THE KITCHEN!!  You don't have to spend a lot of time or money.  The more time I spend with Carla and her family, the less time I'M going to spend in the kitchen.  (Except when my daughter comes home.  I know she prefers my fancy cooking, because her Mom Knows Best!)

PS  A special thanks to Ashna and Sydney for taking the time to eat and then write up their incredible (with no editing by me) reviews.  And a thanks to Marlborough School.  This is where these girls will be entering 10th grade in the fall and learned to write so beautifully and where my daughter graduated from a few years ago and also got a wonderful education.


Monday, June 6, 2011

MOM vs HEALTH FOOD INDUSTRY: You Pick!


88 year old Mom who eats a Mediterranean diet
 Many Americans, occasionally even myself, believe that our regulatory systems protect us from false claims. 
Let's look at the Health Food Industry.  There is a whole gamut - from supplements, to buying prepared meals to junk food.  Are all aspects cut from the same cloth?  What can you do to maximize health if you want to increase the good bacteria in your gut particularly if you do not have infinite time and/or money.

The food industry is regulated by the Food and Drug Industry (FDA).  In 1990 Congress passed a law that required "significant scientific consensus" and "a preponderance of  scientific evidence" for food companies to make scientific claims about their foods.  With a lot of controversy, in 2003 the FDA loosened these regulations for the food industry claims about the health benefits of their products.  Perhaps that explains why I see commercials on TV trying to convince me that cocoa cereals boost immunity, sugary cereals will help my child succeed in school and other breakfast cereals fight heart disease!  In 2010 however, Dannon did settled a lawsuit for $45 million because they claimed that their yogurts were "scientifically" and "clinically" proven to boost immunity and regulate the digestive system and had not proven it.  So what does their label say now?  Just "Helps regulate your digestive system"!  My mother still buys it because she believes that it does.  Advertising works.

I decided to look at a number of yogurts on the market that all had  "probiotic" on their label and all implied, although did not state, that their yogurt met the definition of a probiotic.  I looked at their websites. They all were careful NOT to say that their yogurt was a probiotic food but all IMPLIED that it was and that it had all the health benefits that one finds with probiotics.  Which one of these is the best?  Beats me.   Since the food companies are not going to go through the necessary testing to prove theirs have actual health benefits (ie double blind studies) I can't tell you which is the best. I can tell you what the standards are and how many colony counts are required for them to claim that their food is a probiotic.  And the fact that they are careful not to make the claim assures me that theirs is not a true "probiotic". (If they make the claim the FDA, if it has the funding, will go after them like they did Dannon.)  But they do want you to think that they will deliver on promises of health benefits.

I do believe that dairy products are an important part of a healthy diet.  And I do believe, after all my reading, that there are very specific health benefits to a real probiotic. (Probiotics) I just don't know where to find one, except in a lab.  And I don't think I'm going to get my yogurt from my local bio chem lab.  So how do you pick?  This is what I'm going to tell my daughter who has been asking me.  (Actually, I'm just going to tell her to read this, which she does anyway.)  I would go for ones that have live cultures and I would choose one that has the highest colony counts.  (Good luck finding that out!)  So  pick ones that have a bigger variety of organisms.  Then  pick ones based on taste because then you are more likely to actually eat them.  And finally I would go for the nonfat or the low fat  yogurt.  This is almost all I have to say on yogurt, except I just bought a yogurt maker.  I'll let you know in a future blog if it's worth the effort.

Although at a future date there may be be other probiotic foods for purchase, right now there are none. The only other possible way to increase your probiotics is to buy supplements.  However, again buyer beware.  There is no data that the organisms actually get to your gut. (All of them have the same wording "Statements and claims on this site have not been reviewed or evaluated by the FDA")

Prebiotics are a little more confusing in how you get them in your diet. Clearly they are good for you.  They are present in many fruits and vegetables.  Depending on what you want the prebiotic to do for you and what kind it is, you need anywhere from 5-15 grams per day in your diet.  (A 6 gram serving is about 1/4 lb of raw asparagus; 1 1/3 lbs of bananas, 1/4 lb of cooked onions or 2-3 raw onions)  But do you need to take a supplement?  How about snack foods?

Prebiotic supplements are fiber pills.  Most of their products have inulin or fructo-olisaccharides in them.  The many company advertisements state that that their claims have not been evaluated by the FDA. They, too, all use the same wording as above.  Most of their products have inulin or fructo-olisaccharides in them.  PepsiCo is working on "functional food snacks" (Snacks for a Fat Planet, The New Yorker, 5/16/2011) but they are still not available.

 If a diet rich in fruit and vegetables, ( as now recommended by the new USDA nutritional guidelines Choose My Plate), would need a supplement to reach 5-15 grams of prebiotics a day depends on whether or not the choices you make also are ones that have a high percentage of the types of dietary fiber that are considered functional.

What do I get from all of this reading and analysis of functional foods?  First of all, you can look at this from one of two ways - you can either say that functional foods have additional health benefits beyond their nutritional values OR you could say that the other foods have detrimental health benefits beyond their nutritional values!  What I mean is that perhaps poor food choices can encourage the growth of toxin-producing bacteria that lead to ill health.  If you stop eating foods that cause toxins, you improve your health.  Hence, you have increased your health benefit.  This is different than getting additional health benefits from the other foods - you are getting additional health benefits because you stopped doing something negative (like people who stopped smoking).  But either way you look at it, it is a good thing.

You have to eat something.  You can eat food that leads to bacteria that produce toxins.  Or you can eat food that is good for you.  Like Mom always said, EAT YOUR VEGETABLES!  Do you need to pay extra to get it in pill form?  Your choice. 

My next blog will  be back to food and will feature recipes for those of you who want "functional food" that tastes good!!!

Friday, May 27, 2011

PROBIOTICS - do they make the GRADE?

There are books on this topic.  I am going to just give you an overview
1.  Making the Grade
2.  The probiotic microorganisms
3.  Important health effects of probiotics
4.  Safety of probiotics
5.  Types of foods with probiotics

MAKING THE GRADE
For an organism to be considered a probiotic (and by extension, a probiotic food), it needs to have a positive effective on health in humans (not just rats!).  In addition, it should be safe and nontoxic.  The studies done have to be on the specific organism, not on a related species, because close "relatives" do not always have the same physiologic effect in humans.  Other values that have to be taken into consideration include the number of viable organisms ingested to have the health effects and are they still effective at the end of the expiration date.  And don't forget the age, health, gender and race of the person taking the probiotic can affect whether or not something works.

PROBIOTIC MICROORGANISMS
These organisms meet the following criteria:  they are are not toxic or pathogenic, are originally from the guts of healthy people, and can pass through the stomach without losing their effectiveness before they get to the intestines.

Lactobacilli -bacteria found in abundance in the gut of humans
Bifidobacteria - another group of bacteria found in abundance in the normal human gut.

Other probiotic organisms that are found in normal humans but in smaller amounts include some forms of enterococci, streptococci, lactococci,  and some yeast.

HEALTH EFFECTS
The intestine is extremely involved in the immune system both through how it breaks down the foreign bodies that enter into it (food included) as well as its extensive lymphoid system.  The balance of the different organisms in the intestine will change the pH, the production of substances that kill or allow the growth of different types of bacteria and weaken or strengthen the barrier of the intestinal mucosa.  This is where the probiotics are able to enhance health.
There are many scientific studies that try to measure the health benefits.  Some are done well, some are poorly done, some are difficult to do, and some are waiting to be done.  As it now stands, based on the good studies, the scientific community generally accepts that probiotics do the following:
1.  Decrease the symptoms of lactose intolerance
2.  Prevent or reduce both rota virus and antibiotic-caused diarrhea.
3.  Increase remission periods in people with inflammatory bowel disease

There are some studies that show conflicting reports, and the effects are only in certain groups:
1.  Some regulation in gut motility (improvement in some groups with irritable bowel syndrome)
2.  Improvement or resolution of allergies and atopy in infants, but not older patients

And then in some studies things work in the lab, but so far not in people
1.  Cancer prevention
2.  Decrease cholesterol and protection for heart disease

SAFETY
Probably the best way to think about this is that lactic acid bacteria and bifidobacteria have been used for millenia and have been safe.  Also, when they have actually been looked at, there is no evidence that probiotic products are riskier than are similar products that do not have probiotics added to them.  Also, studies done on patients with leukemia and HIV who were taking probiotics did not have increase infections with lactobacilli.

TYPES OF FOODS
Probiotic foods are different from probiotics in that that have to continue to maintain their efficacy throughout production and shelf life.  They also have to be something that you want to buy which means that they look and taste good for most people.

Fermented Milk Products
Yogurt is the most popular type of probiotic food.  Many yogurts on the market actually do not fit the criteria of being a probiotic.  They do not have live cultures, or do not have the organisms that qualify as probiotics.
Hard cheese is difficult to produce as a probiotic, although fresh cheese is easier.  Unfortunately, the manufacturing process of any cheese tends to kill off the bacteria.  To date all the studies testing the effects of the cheese were done in animals and there are no  marketable cheeses so far.

Other potential foods include ice cream and other sweets, but that kind of defeats the purpose in my mind.  Vegetables have not been tested.  There is some talk about spraying probiotics on salami, but no testing so far.  There have been some studies of probiotic milk powder, but no information on its stability and efficacy.  It could be used in powdered milk, formula etc. if it is successful.


BOTTOM LINE ON PROBIOTICS
Probiotics have scientifically been shown to be safe and have a positive health effect, but not as extensively as what has been claimed in the lay press.  At this point, the only way to get it in food is through yogurt.

On to PREBIOTICS in the next blog.