Betty is a Registered Dietitian who earned her B.S. degree in Food and Nutrition from Marymount College of Fordham University and her M.S. degree in Clinical Nutrition from New York University. She is the Co-Director and Director of nutrition for the New York Obesity Research Center Weight Loss Program.
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
The requirements for a microbe to be considered a probiotic are that the
microbe must be alive when administered, it must be documented to have a heath
benefit, and it must be administered at levels to confer a health benefit. These
are live microorganisms that will not provide the promised benefits if they
don't stay alive. The manufacturer and consumer must pay close attention to the
conditions of storage at which the particular microorganism will survive and the
end of their shelf life. The potency will tell you the number of viable bacteria
per dose, and the purity has to do with presence of contaminating or ineffective
The other thing to remember is that these microorganisms are not all created
equally. In fact, the genus, strain, and species all need to be the same for the
results that you find in the study to be the results that you hope to achieve
when taking it. For example, with the strain Lactobacillus rhamnosus GG, the
genus is Lactobacillus, the species is rhamnosus and the strain is GG. If any
one of those are different in your supplement, you may not attain the same
With the growing popularity of probiotics, there is a huge variety of
supplements from which you can choose. The most important thing is to determine
what type of probiotic microorganism you need for your condition. Do not just
take the supplement that provides the most kinds of organisms. You need to do
your research and be sure that there are scientific studies to support what you
take. New research is emerging, so if you don't find what you need right, now keep
looking. Your doctor can help you decide if trying probiotics might be helpful
for you and can advise you regarding the amount and type of probiotics that may
be appropriate in your case.
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