Stage by stage, a composite runner's iron shortfall is argued from intake, losses and hepcidin, with the evidence each stage would need, in this deficiency case study for NS235 Unit 5. Searches like "ns 235 unit 5 assignment example", "ns235 unit 5 sample" and "ns235 unit 5 example" land here.
What a finished NS235 Unit 5 deficiency case study looks like
The case appears first in a short paragraph: a composite runner in her twenties, high weekly mileage, a mostly plant-based pattern, fatigue during training and a hemoglobin value within the reference range. The argument follows in three stages. Depletion is argued from low ferritin, the storage marker, which falls before anything else. Iron-deficient erythropoiesis is argued next, from falling transferrin saturation and rising soluble transferrin receptor. Anemia is the stage the case has not reached, which is exactly why the shortfall had to be argued. A mechanism section explains the runner's particular exposure: hepcidin rises for several hours after hard sessions through an interleukin-6 signal, and hepcidin degrades ferroportin, the only known cellular iron exporter, so absorption from meals eaten in that window falls. Losses through sweat, the gut and foot-strike hemolysis are sized modestly.
How a NS235 Unit 5 example is structured
Case papers in this unit usually follow the order of an argument: case, intake evidence, loss and absorption evidence, staging, and a limited conclusion. Intake is described qualitatively and with a source for the reference amount, noting that nonheme iron dominates the pattern. The absorption section explains regulation at the enterocyte, iron entering through the divalent metal transporter and leaving through ferroportin under hepcidin's control, so the runner's training can be connected to her supply. A staging table sets each stage beside the marker that defines it and states which markers the case supplies and which it lacks. Ferritin's weakness as an acute-phase reactant earns a sentence, since inflammation can raise it. Its closing paragraph finds the evidence consistent with early-stage depletion and places confirmation and any treatment with clinicians. Citations follow.
A normal hemoglobin as the puzzle
The case begins with a value inside the reference range, and the paper explains why that number cannot close the question on its own.
Three stages, three markers
Depletion, deficient red cell production and anemia each appear with the marker that defines them, and the case is placed on that sequence.
Hepcidin after hard sessions
Training raises hepcidin for several hours, which removes ferroportin from the intestinal cell and cuts absorption from meals eaten in that window.
Losses sized, not dramatized
Sweat, gut and foot-strike losses are each given a modest, cited size, so they support the argument without carrying all of it.
Consistent with, not diagnosed
The conclusion states what the evidence is consistent with and names clinicians as the people who confirm it and decide what follows.
Where marks go in NS235 Unit 5
Most marks disappear when the case is decided on hemoglobin alone, a normal value read as proof of adequate iron, which inverts the lesson the unit teaches. Staging errors come next: ferritin and hemoglobin treated as interchangeable markers, or the stages presented in the wrong order. Mechanism is often thin, with training said to 'use up iron' and no mention of hepcidin, ferroportin or losses. Some papers ignore ferritin's rise with inflammation and read a normal value after a hard race as reassurance. Plant-based eating is sometimes blamed outright rather than analyzed for its nonheme iron and inhibitors. Cases that name a product or an amount for the composite runner, instead of noting where that decision is made, are marked as outside the assignment in most sections. Unsourced reference ranges cost accuracy credit.
Get a NS235 Unit 5 example written to your instructions
Send the Unit 5 case exactly as your prompt describes it, with any laboratory values it supplies and the rubric. The paper argues the shortfall stage by stage for that composite person, iron or otherwise, with a staging table and a referral-point conclusion, in 24-48h. The first one costs nothing to request.
NS235 Unit 5 questions, answered
Why does ferritin come first in the staging?
Because stores are drawn down before red cell production suffers. Ferritin reflects storage iron, so it falls while hemoglobin is still normal. Transferrin saturation and soluble transferrin receptor change next, and hemoglobin falls last. Your case paper should place its evidence on that sequence and say which markers the case provides, since graders check whether you know which comes first.
Can the case recommend an iron supplement?
No. You can describe, with sources, how deficiency is generally confirmed and managed, but choosing a supplement and dose for a person with a suspected deficiency is clinical work for a physician or dietitian. Close the paper by naming that referral point. Graders in most sections mark prescriptive recommendations as outside the scope of a written case.
Does the case have to involve iron?
No. Sections supply cases built around vitamin B12, vitamin D, iodine, zinc and others. The structure carries over: intake evidence, what governs absorption, the markers that stage the shortfall and a conclusion that stops short of diagnosis. Send your case as the prompt describes it, and the argument is built around that nutrient and that person.