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Bio 109: Nutrition Spring 2015
Questions from the First Readings
1) How are we first infected with our microbiome? Give at least three examples or situations of how our microbiome might be influenced throughout our life time.
We are first infected with microbiomes during birth. If a mother gives birth natural, when the baby passes through the vagina, it will be exposed to various microbiomes . After birth, our biomes continue to be shifted based on our environment and what we are exposed too. As a toddler, our parents heavily influence our biomes. An example of this can be breastfeeding or direct contact with other family members. Another case that can influence our microbiomes is the food we consume. An individual who eats at restaurants often can be exposed to more microbiomes than an individual who cooks their own meal. Traveling is also one of the major influencer of microbiomes. When a person travels, they are more likely to be exposed to new bacteria or viruses than they have been used too.
2) H. pylori has co-existed with humans for many thousands of years. Why has H. pylori persisted in the human population. What are the known benefits of having this bacteria living with us? What are the known problems? …show more content…
pylori is considered to be one of the major cause of gastritis and peptic ulcers. It has also been linked with an increased risk of stomach cancer as well. Because of these, people having been taking antibiotics in order prevent developing these diseases. After the WWII the amount of antibiotics became widely available and people consumed them more. However, studies conducted suggested that this might have resulted in high rates of asthma. In addition to this, other studies also found that destroying the H. pylori might alter the metabolism of an individual and increase the risk of obesity. This is mainly because there is a strong relationship between bacterium and stomach hormones (ghrelin and

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