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Probiotics: A Billion Good Bugs

Friendly Bacteria for Your Digestive System

-- By Becky Hand, Licensed & Registered Dietitian
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Did you know that your digestive tract contains more than 400 types of “friendly” bacteria? These little guys, commonly referred to as probiotics (which means "pro-life"), help reduce the growth of harmful bacteria and promote a healthy digestive system. That’s right! Probiotics are live bacteria with clinically-documented health benefits.

Health Benefits
It appears that when the digestive system is kept healthy, other body systems greatly benefit as well. Probiotics may:
  • Protect against infection
  • Enhance and boost the immune system
  • Promote and improve digestive health
  • Alleviate diarrhea caused by antibiotic treatments
  • Promote urinary and genital health
  • Assist in the management of inflammation
  • Help alleviate symptoms of lactose intolerance
  • Improve some types of eczema in infants and children
  • Reduce cholesterol levels
  • Decrease the risk of certain cancers
It is important to note that each type of friendly bacteria has a specific health benefit to the body. With over 400 different types of probiotics identified, researchers are just starting to uncover the health roles and benefits of each.

Food Sources
Currently, foods that contain probiotics are primarily dairy products and dairy beverages, including:
  • Yogurt
  • Drinkable and squeezable yogurts
  • Fluid milk with added probiotics
  • Fermented milk such as sweet acidophilus milk
  • Kefir
Through fermentation, probiotics enhance the flavor and texture of these particular dairy products. Dairy foods actually buffer your stomach acid and bile, thereby protecting the probiotics from the stomach acid so that they can reach the intestines.

Raw (unpasteurized) yogurt is loaded with bacteria. Most yogurts today are pasteurized and these bacteria are killed. However, some friendly bacteria are added back. Look for a yogurt that contains the “live and active culture” sign on the label. Pay close attention to the expiration date because these live bacterial cultures can diminish with time.

Probiotic Supplements
Probiotic supplements are available in a variety of forms, such as freeze dried powder, capsules, wafers, and liquids. Remember to exercise caution before using a probiotic supplement. The Food and Drug Administration (FDA) does not regulate supplements in the same way as it regulates medication. Legally, manufacturers can sell supplements, even with little or no research on how well it works or how safe it is.

Supplement and medication reactions can occur, therefore seek the guidance of your health care provider before using any probiotic supplement.

Grab Some Bugs!
Why not give some fermented dairy products a try today? Little Miss Muffet did! Remember her curds and whey—a fermented dairy product filled with friendly bacteria? That old spider probably came and sat down be side her…because he wanted the probiotic benefits too!
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About The Author

Becky Hand Becky Hand
Becky is a registered and licensed dietitian with almost 20 years of experience. Through her company, An Ounce of Prevention, she makes nutrition principles practical, easy to apply and fun. See all of Becky's articles.

Member Comments

  • BROWSER431
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    ails&detail=impak for more information, Changing World Health, One Family at a Time. - 4/23/2012 5:34:27 AM
  • MELODY1217
    I have horrific IBS and finally capitulated to my mom's insistance that I try a Probiotic supplement. I can honestly tell you that i was in excruciating PAIN for 2 weeks. I have never had gas like that before or felt that much intestinal pain for a long time. And I know intestinal pain. All I can say is that I don't think my digestive tract ever fully recovered from that experiment a year ago and I don't think I'll ever try it again. - 12/22/2011 11:26:05 AM
  • @ILOVEBIRDEEZ: What is the source for your assertion that casein protein, occuring naturally in dairy (milk, cheese, etc) is a carcinogen? - 12/22/2011 7:01:10 AM
  • ELLSJO
    i looked at the low fat yogert options and nearly eveery one had nearly the same calories as the full fat option, yes there was less fat but a lot more sugar. From now on I'm sticking to full fat but eating a bit less of it. Ellsjo - 10/13/2011 10:42:48 AM
  • I am trying and trying to like Greek Yogurt for the protein value, but it just seems that I don't. (And I have never been a picky eater)
    It seems everyone on the planet but me likes it...tastes like sour cream to me. This is funny, because do love sour cream! :0)
    I do like to use it for in place of sour cream when making dips for veggies! - 9/8/2011 1:35:14 PM
  • ILOVEBIRDEEZ
    Probiotics are a good thing, of course, but getting them by eating dairy foods may not be. There is a animal-product protein called casein, and that is a carcinogen. - 9/7/2011 10:32:42 PM
  • I bought some Greek yoghurt at Safeway a while back and my daughter ate all of it before i got to it. - 9/7/2011 8:15:13 PM
  • i take a pribotics supplement, as i cannot stand any type of yogurt. in fact the only dairy product i can tolerate is butter... the supplements may not be the best but since i have started taking them my digestive system is working better, and i fell better. - 9/7/2011 8:42:28 AM
  • One smart tip is to eat yogurt instead of ice-cream. It's cold and if you add some fruit it's even better than ice-cream and of course much much healthier! - 9/7/2011 6:17:53 AM
  • TONYD55
    I love yogurt and have it often, but watch the sugar. Even the popular well known brands have high sugar content. I eat no sugar added from Publix. - 9/7/2011 6:11:15 AM
  • The Yoplait yogurt flavors are pretty kid-friendly, you could start kids off that way. I have just recently tried greek yogurt and like it.

    I would like to know if the pro-biotics in Activia really are different than other yogurt or have they just been re-named and patented? I don't believe Activia is any better than any other active culture yogurt. - 9/7/2011 5:05:01 AM
  • MYNEWNORMAL
    Using probiotics and a healthy, balanced diet (proteins, complex carbs and healthy fats) has enabled me to get off my medication for acid reflux. I did this with my doctor's blessing and under the supervision of a nutrition counselor. I'm healthier than I have been in a long time, and no more heartburn thanks for eliminating sugars and refined foods. Medications for acid reflux leach the calcium from your food before your body can use it. Hence, an increased risk for osteopenia and osteoporosis. They also allow the bad bacteria to take over in your gut because of the reduced stomach acid. It is not a good idea to drop off these medications without your doctor's knowledge and major dietary changes. - 8/8/2011 2:32:16 PM
  • BILL-YOGURT-LAB
    What simply amazes me is that there is no list of probiotic bacteria strains and what health benefit each has! I even checked an international probiotic organization and the deputy director said there was none. She was happy I started my own and you can find it here... http://mryogurt.i
    nfo/probiotics although I have yet to find a source of information about what probiotic does what for your health.

    Cheers! - 6/30/2011 7:57:57 AM
  • I've just started using yogurt and probiotics to treat BV, it just kept reocurring after medication so obviously it wasn't taking care of the underlying problem, but the probiotics seem to be working so far! - 6/26/2011 9:14:19 AM
  • I have no issues that require probiotics. My concern is how they are showing up in EVERYTHING.....ev
    en my Splenda....WHY??? I eat Greek yogurt all the time, occasionally activia, but not for the probiotics....it is just good. As a nurse I encourage pts. on long term IV antibiotics to eat activia EVERYDAY....to replace the good flora in the intestine.... - 6/25/2011 9:38:54 PM