Flash animation of digestion (lower level). (
http://kitses.com/animation/swfs/digestion.swf
)
Page 226 Deficiency of a particular carbohydrate can cause digestive distress when a person eats certain foods. For example, lack of the enzyme lactase prevents a large proportion of the human population from digesting the monosaccharide lactose, which is a common component of dairy products. What are the symptoms of lactose intolerance? Which segments of the population are most likely to experience it, and why?
The NDDIC is a service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). The NIDDK is part of the National Institutes of Health under the U.S. Department of Health and Human Services. Established in 1980, the Clearinghouse provides information about digestive diseases to people with digestive disorders and to their families, health care professionals, and the public. (
http://digestive.niddk.nih.gov/ddiseases/pubs/lactoseintolerance/
)
Three Rivers Endoscopy Center is the first free standing ambulatory surgery center in Western Pennsylvania solely dedicated to
gastrointestinal endoscopy (scope tests). (
http://www.gihealth.com/html/education/lactose.html
)
T his webpage discusses lactose intolerance basics, including the symptoms, diagnosis, treatment, and information on who is likeliest to
become lactose intolerant. There are good links to further explore issues of lactose intolerance. (
http://allergies.about.com/cs/lactose/a/aa102201a.htm
)
T his website has succinct information on causes, prevention and treatment of lactose intolerance. (
http://www.intelihealth.com/IH/ihtIH/WSIHW000/8270/8458/187065.html?d=dmtHealthAZ
)
Page 234 The discovery of Helicobacter pylori and its role in ulcers is an outstanding example of scientific inquiry and investigation. Why was the bacterium’s existence in the stomach hypothesized? How was it discovered? And what astounding adaptations enable it to survive in the hostile environment of the stomach?
Helicobacter pylori and peptic ulcer disease. (
http://www.cdc.gov/ulcer/index.htm
)
Page 235 Inflammation of the pancreas is called pancreatitis. Being a disease of the digestive tract, perhaps it’s not surprising that it is linked to many other aspects of digestion and metabolism. For example, which of its most common causes is a disease of another accessory organ? What enzyme you’ve just learned about is used in diagnosis of pancreatitis? And what role does nutrition play in managing the condition?
This webpage for a Canadian charity dedicated to promoting the treatment and care of patients with pancreatitis, gives an overview of
pancreatitis and other diseases of accessory organs. (
http://www.badgut.com/index.php?contentFile=main_index&title=Home%20Page
)
This page summarizes one of the most common tests used to diagnose pancreatitis. (
http://www.labtestsonline.org/understanding/analytes/amylase/test.html
)
This website, designed for people with pancreatic diseases and those who care for them, covers a wide range of medical options,
nutritional strategies, and alternative therapies to help people manage their pancreatitis. (
http://www.pancreasfoundation.org/index.shtml
)
Page 236 Gastric bypass surgery is a procedure that alters the digestive tract and reduces the size of the stomach. Under what circumstances is this procedure usually performed? How successful is it, statistically?
This site explains the various procedures available, how they work, their advantages and disadvantages. (
http://win.niddk.nih.gov/publications/gastric.htm
)
Informative (but text-heavy) article on the rationale, goals, risks, and results of surgical treatment of morbid obesity. The site also
offers history and summary of the different surgical procedures, including illustrations and concise information on advantages and complications of each type
of intervention. (
http://www.asbs.org/html/patients/rationale.htm
)
This site offers detailed information on surgical options for weight loss. It includes statistical information on risks of gastric bypass
and a video animation of the procedure. (
http://www.obesehelp.net/
)
AOA Obesity Advisor page on Obesity Surgery, offers information on assessing the need for surgery, the different types of surgery and the
benefits and risks of the different possible surgeries. (
http://www.obesity.org/education/advisor.shtml
)
Page 237 Processed foods, a common feature of modern diets, often contain additives. These chemicals are put into food to preserve it, enhance its flavour, or improve its colour. The national government ensures the safety of these products. However, there is still much controversy over whether they can harm people.
A Canadian website that gives our definition of a food additive. It's broader than might be expected. (
http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=A1ARTA0002882
)
The Chemical Health Hazard Assessment Division of Health Canada is responsible for ensuring the safety of additives that go into
Canadians' food. (
http://www.hc-sc.gc.ca/ahc-asc/branch-dirgen/hpfb-dgpsa/fd-da/bcs-bsc/chha-edpcs/index_e....
)
This list of common food additives is presented by the people at a market specializing in organic food. They give information about
sources of additives, as well as alleged adverse effects. (
http://www.thebigcarrot.ca/additives.htm
)
The Canadian Cancer Society sets the record straight on some of the more common myths about cancer and what causes it, including common
foods and food additives. (
http://www.cancer.ca/ccs/internet/standard/0,,3172_10127__langId-en,00.html
)