From June 2026, Nutrition shows up as its own named category on your Step 1, Step 2 CK and Step 3 score report. Here is what changed, what it does not change, and what you actually need to know.
What changed
The USMLE made two nutrition-related changes across all three Steps, lining up with the 2024 JAMA consensus statement on nutrition competencies for medical students and trainees:
- More nutrition content. More questions on nutrition science, clinical application, and chronic disease prevention, across every Step.
- Nutrition is now a named feedback category on the score report, visible to you and to schools.
What did not change
Nutrition questions are not weighted separately. There is no nutrition block. The questions stay embedded inside the organ system and discipline questions you already expect: cardiology, GI, neurology, psychiatry, OB/GYN and the rest. What changed is how much of it there is and how it gets reported, not the structure of the exam.
Why it matters for your report
Because it is now its own line, a weak nutrition performance is visible to program directors reading your application. It used to be diluted into the broader organ system categories and effectively invisible. Now it stands on its own.
In practice: if you were treating nutrition as low-yield and skipping it, and plenty of people were, that decision now gets printed on your score report. Which changes how much time it is worth giving.
What actually gets tested
Nutrition is not a system. It runs through nearly all of them. Here is the breakdown by category.
| Category | High-yield topics | Step |
|---|---|---|
| Fat-soluble vitamins (ADEK) | Deficiency presentations and toxicity: night blindness (A), rickets and osteomalacia (D), haemolysis in newborns (E), warfarin antagonism (K) | Step 1 and 2 |
| Water-soluble vitamins | B1 (Wernicke and Korsakoff), B3 (pellagra, Hartnup), B6 (INH toxicity, sideroblastic anaemia), B12 and folate (both megaloblastic, only B12 has neuro), C (scurvy) | Step 1 and 2 |
| Minerals | Zinc (delayed wound healing, hypogonadism), iodine (thyroid), selenium, chromium, copper (Menkes), fluoride | Step 1 |
| Malnutrition | Kwashiorkor against marasmus (protein deficiency with oedema, versus total starvation with emaciation), refeeding syndrome (phosphate drops, ATP falls, arrhythmia), thiamine before glucose in any malnourished patient | Step 1 and 2 |
| Metabolism and storage diseases | Pompe (cardiomegaly, lysosomal glycogen), McArdle (no lactate rise with exercise), essential amino acids (PVT TIM HALL), purely ketogenic amino acids (leucine and lysine) | Step 1 |
| Eating disorders | Anorexia against bulimia: electrolyte patterns, medical complications, treatment (SSRI for bulimia, olanzapine for anorexia), ARFID | Step 2 |
| Obesity and GLP-1 agents | BMI cutoffs, complication screening, GLP-1 agonists (semaglutide, tirzepatide): mechanism, indications, side effects (nausea and vomiting, pancreatitis risk, thyroid C-cell tumours) | Step 2 |
| TPN and enteral nutrition | Indications for TPN against enteral feeding, complications (line sepsis, hyperglycaemia, refeeding), which patients get which route | Step 2 |
| Post-bariatric deficiencies | Roux-en-Y bypasses the duodenum, so B12, iron, vitamin D and calcium, and thiamine all fall. Supplement post-op. | Step 2 |
| Dietary counselling | Mediterranean diet, DASH diet (hypertension), low-oxalate (calcium stones), PKU restrictions, screening adolescents for eating disorders | Step 2 |
How the questions are disguised
This is the part that matters most in practice. Nutrition questions almost never look like nutrition questions. They are written as normal clinical vignettes inside their own system, and the nutritional piece is the mechanism behind the answer.
Confusion, ataxia and ophthalmoplegia in an alcoholic reads as neurology, and the answer is thiamine. Subacute combined degeneration after bariatric surgery reads as neurology, and the answer is B12 from the bypassed duodenum. A teenager with lanugo, bradycardia and a low potassium reads as psychiatry, and the management is electrolytes and cardiac monitoring.
What is being tested is not whether you memorised the vitamins. It is whether you can spot a nutritional deficiency from how it presents and manage it correctly.
The principles worth knowing cold
- Thiamine before glucose in any malnourished or alcoholic patient. Glucose first can precipitate Wernicke encephalopathy.
- B12 has neuro, folate does not. Both give a megaloblastic anaemia, but subacute combined degeneration is B12 only.
- Refeeding syndrome: phosphate drops first, ATP falls, then arrhythmia. Thiamine before glucose again.
- Kwashiorkor against marasmus: protein deficiency with oedema, versus total starvation with emaciation.
- Purely ketogenic amino acids: leucine and lysine, the two Ls. They cannot make glucose.
- After a Roux-en-Y: B12, iron, vitamin D and calcium, thiamine. All absorbed in the duodenum you just bypassed.
- Vitamin K IM at birth: no gut flora yet, low in breast milk, poor placental transfer.
- GLP-1 agonists: contraindicated with a personal or family history of medullary thyroid cancer or MEN2.
How to fit it into your plan
Nutrition content in First Aid is scattered across chapters. Vitamins and minerals sit in biochemistry, eating disorders in psychiatry, obesity in endocrinology. That scatter is exactly why I put the Dumirieh nutrition notes together, pulling everything testable for Step 1 and Step 2 CK into one document, sorted by category with source tags and high-yield markers.
For most people the easiest approach is one nutrition review session per system, right as you finish that system. Finish neurology, review the B vitamins and thiamine. Finish GI, review malnutrition and TPN. Finish psychiatry, review the eating disorders. That way it folds into the plan you already have instead of becoming another task on the list.
Nutrition went from something students skipped to something with its own line on your score report. Anyone who adjusts for that has a visible advantage.
Download the Dumirieh nutrition notes, covering all 15 nutrition categories for Step 1 and Step 2 CK, with First Aid, Mehlman and UWorld integration.
Want this as a plan instead of advice? If you want a day-by-day schedule built around your own exam date and your own weak systems, that is what Dumirieh mentorship does. You can read my full story on the about page.
