BREWER'S YEAST
Brewer's yeast, or Saccharomyces cerevisiae,
is a type of yeast that typically grows on hops and is used to make beer. A
byproduct of the fermentation process, brewer's yeast is available in most
health food stores and has a slightly bitter flavor. Brewer's yeast contains a
variety of important nutrients and offers a range of potential health benefits.
Blood sugar
Brewer's yeast provides one of the highest
quality and most easily absorbable forms of chromium of any food, according to
Cox Health. Chromium is a trace mineral that assists in the breakdown of
carbohydrates and fats for energy. Brewer's yeast provides about 4.7 micrograms
of chromium per gram. A study published in the July 2011 issue of the
"Journal of Trace Elements in Medicine and Biology" found that
chromium exerted beneficial effects on blood sugar and cholesterol levels in
individuals recently diagnosed with Type 2 diabetes. Participants consumed 9
grams of brewer's yeast per day for 40 days. Results showed a 42 percent
reduction in fasting blood sugar levels and a 28 percent drop in hemoglobin
A1c, or HbA1c, a measure of average blood sugar over a 3-month period. Levels
of low-density lipoprotein, or LDL, the bad form of cholesterol, were also
reduced by 17 percent.
Cancer
Some forms of cancer may be prevented by
brewer's yeast, according to a cell culture study published in the June 2012
issue of the journal "Cytotechnology." In the study, beta-glucan, a
polysaccharide molecule found in brewer's yeast, protected against DNA damage
from ultraviolet light. In a study published in the September 2012 issue of the
journal "Biochemical and Biophysical Research Communications"
brewer's yeast demonstrated the ability to prevent structures at the ends of
chromosomes from becoming eroded, a process that can lead to cancerous cell
division. Researchers note that a protein in brewer's yeast is similar in
structure to a protein that participates in human cell division.
Immune system
Brewer's yeast may help improve immune
function, according to the University of Utah Health Care. Immune benefits of
brewer's yeast include inhibition of Clostridium difficile, an
antibiotic-resistant bacteria that causes diarrhea. Brewer's yeast also
inhibits the food-borne pathogens Salmonella and E. coli, according to a study
published in the March 2007 issue of the "Journal of Medical
Microbiology." Brewer's yeast prevented spread of Salmonella to the liver
and improved liver function, allowing more effective removal of bacteria from
the bloodstream. Researchers concluded that brewer's yeast bolstered the immune
system by acting both locally -- at the site of infection -- and systemically
-- throughout the body
Nutrients
Comprised of 52
percent protein, brewer's yeast is an excellent low-fat source of protein and
is a favored energy food among fitness enthusiasts for use in smoothies and
juices. Brewer's yeast is also a good source of certain minerals, such as selenium
and chromium and B-complex vitamins. Though naturally lacking in vitamin B-12,
notes the University of Maryland Medical Center, some manufacturers of brewer's yeast supplements
fortify the yeast with the vitamin.
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