Iowa State University offers 3 Nutritional Sciences credentials:
- B.S., Nutritional Science
- M.S., Nutritional Sciences
- Ph.D., Nutritional Sciences
Program Tracks Overview
| Program | Est. Tuition (In-State / Out-of-State) | Est. Duration | Credit Hours |
|---|---|---|---|
| B.S. | $49.7K / $130.1K | 4 years (8 semesters) | 120 |
| M.S. | $34.7K / $72.0K | 1.9 years (4 semesters) | 30 minimum |
| Ph.D. | $87.7K / $182.0K | 4.8 years (10 semesters) | 72 minimum |
Iowa State’s defining characteristic is that these are laboratory science degrees, not dietitian-credentialing degrees. None of the three carries ACEND accreditation, and none makes a graduate eligible to sit for the Registered Dietitian Nutritionist exam. Applicants who want the RD credential need Iowa State’s separate Dietetics major instead.
Quick Facts
| Feature | Details |
|---|---|
| Program Types | B.S., M.S., Ph.D. in Nutritional Sciences |
| Format | Campus, Ames. No online or distance option. |
| Credit Hours | 120 (B.S.); 30 minimum (M.S.); 72 minimum (Ph.D.) |
| ACEND Accreditation | None. Covers Iowa State’s Dietetics and Diet and Exercise majors instead. |
| RD/RDN Eligibility | No. These degrees do not satisfy the Didactic Program in Dietetics requirement. |
| Specializations | Animal Nutrition, Human Nutrition, Molecular and Cellular Nutrition, Global Nutrition (graduate only) |
| Distinctive Coursework | Nutrition and Epigenetic Regulation of Gene Expression; Molecular Basis of Nutrition in Disease Etiology |
| Research Requirement | Thesis and defense required (M.S.); dissertation and preliminary exam (Ph.D.) |
| Entrance Exams | No GRE. No GMAT. |
| Graduate Intake | One per year. January 15 deadline for fall start. |
| Graduate GPA Floor | 3.0 (2.0 for the B.S.) |
| Institutional Accreditation | Higher Learning Commission |
Bachelor of Science, Nutritional Science
The estimated four-year tuition and mandatory fees for the B.S. in Nutritional Science at Iowa State is approximately $49,670 for Iowa residents and $130,118 for non-residents, at 2026–27 rates. The program requires 120 credits and is structured as a conventional four-year, eight-semester sequence.
The Nutritional Science major is administered by the Department of Food Science and Human Nutrition and can be taken through either the College of Health and Human Sciences or the College of Agriculture and Life Sciences.
B.S. Curriculum
Science load is the story here. Of the 120 credits, 13 are physical sciences, 24 to 29 are biological sciences, and 31 are food science and human nutrition. That leaves a comparatively narrow elective band. The required core runs through general and organic chemistry with labs, two semesters of principles of biology with labs, human anatomy with lab, genetics, biochemistry, microbiology with lab, and human physiology. This is a heavier chemistry and biology sequence than a general nutrition or wellness degree carries, and it is the reason the major functions as pre-med, pre-dental, pre-PA and pre-pharmacy preparation.
The nutrition spine. Nine required FSHN courses build from introductory human nutrition through metabolism, clinical perspectives, health assessment, and lifecycle nutrition, ending in molecular-level disease coursework and a research methods course. Students then choose at least 10 additional credits from an approved list that includes graduate-level NUTRS courses.
- FSHN 1670: Introductory Human Nutrition and Health
- FSHN 2650: Metabolism, Nutrition and Health
- FSHN 3600: Advanced Nutrition and the Regulation of Metabolism in Health and Disease
- FSHN 3610: Nutrition and Health Assessment
- FSHN 3620: Nutrition and Health Throughout the Lifecycle
- FSHN 4670: Molecular Basis of Nutrition in Disease Etiology and Health Promotion
- FSHN 4920: Research Concepts in Human Nutrition
- FSHN 3420: World Food Issues, Past and Present (satisfies the ethics requirement)
The approved elective list is where students differentiate. It carries Sports Nutrition, Obesity and Health, Medical Nutrition and Disease I and II, Community Nutrition and Health, Nutrition Counseling and Education Methods, Precision Medicine in Integrated Health, and Undergraduate Research. Three graduate NUTRS courses also appear on it, including Nutrition and Epigenetic Regulation of Gene Expression, which lets a strong undergraduate begin graduate coursework early.
More curriculum details are available here.
You Should Know
- The major is listed in two colleges with slightly different general education requirements. Students in the College of Health and Human Sciences must take 6 additional humanities or social science credits that College of Agriculture and Life Sciences students do not. Confirm which college your admission sits in before planning electives.
- The catalog four-year plan front-loads roughly 31 to 33 credits per year, which pushes several requirements into a fixed sequence. Biochemistry is scheduled in the second year and gates the third-year advanced nutrition course.
- Only 65 credits from a two-year institution may apply to the degree, of which no more than 16 may be technical credits. Transfer students should map this before enrolling.
- The minimum GPA is 2.00, but students aiming at medical, dental, or pharmacy school are competing on a much higher standard, and the catalog explicitly directs them to check each professional program’s own entrance requirements.
B.S. Research and Pre-Health Preparation
- FSHN 4920, Research Concepts in Human Nutrition, is required of all majors.
- FSHN 4990, Undergraduate Research, and FSHN 4900C, Independent Study, are both available for credit on the approved elective list.
- The department offers a nutrition minor and a concurrent B.S. and M.S. option for well-qualified students in the pre-health professional and research option.
- Ames campus laboratory access comes through the Department of Food Science and Human Nutrition and, for graduate-level work, the Interdepartmental Graduate Program.
The research component is genuinely built in rather than optional, which matters for two audiences. For students heading to medical or dental school, documented independent research is a differentiator on an application where the major itself is not required. For students heading into a nutrition Ph.D., the concurrent B.S. and M.S. route compresses the timeline before the doctorate begins.
Master of Science, Nutritional Sciences
The estimated tuition and mandatory fees for the M.S. in Nutritional Sciences at Iowa State is approximately $34,670 for Iowa residents and $72,038 for non-residents across the median completion time. The program requires a minimum of 30 graduate credits and reports a median completion of 1.9 years.
M.S. Curriculum
The named core nearly fills the stated minimum. The catalog lists a required sequence totaling 22 to 24 credits: advanced macronutrient and micronutrient metabolism, advanced vertebrate physiology, two semesters of biochemistry, graduate statistics, two seminar requirements, responsible conduct of research, and a teaching practicum. Against a 30-credit floor, that leaves only 6 to 8 credits for specialization coursework and thesis research combined. Since a thesis and defense are required, the 30-credit figure is best read as a floor most students exceed, which is consistent with the 1.9-year median completion.
- NUTRS 5100: Advanced Nutrition and Metabolism in Health and Disease, Macronutrients (2 cr.)
- NUTRS 5110: Advanced Nutrition and Metabolism in Health and Disease, Micronutrients (2 cr.)
- NUTRS 5490: Advanced Vertebrate Physiology I, or a Kinesiology substitute (4 cr.)
- BBMB 4040 and BBMB 4050: Biochemistry I and II (6 cr.)
- STAT 5101: Statistical Methods for Data Analysis (4 cr.)
- GRST 5650: Responsible Conduct of Research, or equivalent CITI training (1 cr.)
- FSHN 6810 Seminar and ANS 6030 or FSHN 6820 (2 cr.)
- FSHN 5900C or ANS 5900L: Special Topics, Teaching (1–3 cr.)
Interdepartmental structure. The degree is administered through the Interdepartmental Graduate Program in Nutritional Sciences under the joint auspices of the Food Science and Human Nutrition and Animal Science department chairs, drawing faculty from 10 disciplines. Coursework beyond the core is set by an Academic Plan Committee based on specialization, then approved by a student-chosen Program of Study Committee, the director of graduate education, and the Graduate College. In practice this means the plan of study is negotiated rather than prescribed, which suits students with a defined research question and frustrates those without one.
More curriculum details are available here.
You Should Know
- Iowa State’s own pages disagree on the number of specializations. Both the departmental page and the catalog name three: Animal Nutrition, Human Nutrition, and Molecular and Cellular Nutrition, which the catalog calls Biochemical and Molecular Nutrition. The Graduate College’s transcript-designation list names four, adding Global Nutrition. If Global Nutrition is the reason you are applying, confirm it is currently offered before committing.
- The Ph.D. requirement reads “3 additional credits of graduate-level biochemistry (6 credits total including those for the M.S.),” but the M.S. core already lists 6 biochemistry credits. Ask how biochemistry credits are counted across the two degrees.
- BBMB 4040 and 4050 are 4000-level courses inside a graduate core. Students who completed equivalent biochemistry as undergraduates should ask what substitutes, since the catalog does not address it.
- At least 22 of the 30 credits must be earned at Iowa State, which caps transfer credit at 8.
- A thesis and successful defense appear in the required list. There is no non-thesis or capstone alternative in the published requirements.
M.S. Admissions
There is one intake per year, so a missed deadline costs a full cycle.
- Four-year bachelor’s degree or equivalent
- Minimum 3.0 GPA, which the program may alter
- No GRE and no GMAT
- Resume or CV, transcripts, and letters of recommendation
- January 15 application deadline for fall semester entry
- Open to domestic and international applicants
- Recommended undergraduate preparation: organic chemistry with lab, physics, analytical chemistry, a nutrition course with a biochemistry or organic chemistry prerequisite, and a biology, physiology, or anatomy course
- International applicants: TOEFL paper 550, IELTS 6.5, PTE 53, or Duolingo 115. The program will not review without TOEFL or IELTS.
You Should Know
- Students holding a bachelor’s are generally admitted to the M.S. first and apply to the Ph.D. afterward. Direct Ph.D. admission is reserved for exceptional applicants with relevant experience.
- Applicants can be admitted or provisionally admitted with coursework deficiencies, which makes the recommended preparation list a guide rather than a gate.
- The TOEFL internet-based threshold is mid-transition. Iowa State lists 79 for exams taken before January 21, 2026 and a differently scaled requirement for exams on or after that date. Verify the current figure against the Graduate College before testing.
- The Peace Corps Coverdell Fellowship pathway into this program runs on its own October 1 and February 1 deadlines and does require the GRE, unlike standard admission.
Doctor of Philosophy, Nutritional Sciences
The estimated tuition and mandatory fees for the Ph.D. in Nutritional Sciences at Iowa State is approximately $87,700 for Iowa residents and $182,000 for non-residents at the 4.8-year median, before any assistantship offset. The degree requires a minimum of 72 graduate credits, no fewer than 36 earned at Iowa State.
Ph.D. Curriculum
The doctorate builds directly on the master’s rather than running parallel to it. Requirements are completion of everything in the M.S., plus additional graduate biochemistry, graduate statistics through STAT 4212 Experimental Design and Data Analysis, physiology if not already taken, additional specialization coursework set by the Program of Study Committee, and additional teaching assistant duty. Milestones are a preliminary examination, a written dissertation, a seminar presentation of the dissertation research, and a defense.
The 4.8-year median sits in normal range for a laboratory science doctorate. The teaching requirement appearing at both M.S. and Ph.D. level is worth noting for applicants who want a faculty career, since it produces documented instructional experience rather than research-only training.
You Should Know
- The published tuition figure above is a straight-line projection of current annual rates across the median completion time and is not a quoted program price. Most funded doctoral students pay materially less. See Tuition below.
- Because the Ph.D. requires completion of all M.S. requirements, the specialization ambiguity noted in the M.S. section carries forward.
Tuition
Cost per credit, derived. Iowa State does not publish a per-credit rate for these programs on its program pages. It publishes annual full-time rates and bills tuition up to a maximum of 12 credits per term for undergraduates and 9 credits per term for graduate students. Dividing the per-semester charge by the applicable cap yields approximately $494 per credit for a resident upper-division undergraduate and $794 per credit for a resident graduate student, against $1,334 and $1,832 respectively for non-residents. These are derived figures, shown so the annual rates below can be compared with per-credit programs.
The rate that applies here is not the standard rate. Nutritional Science and Nutritional Sciences both appear on Iowa State’s Experiential Learning-Based Majors list, which carries a higher Cost of Instruction rate. Undergraduates are assessed it as juniors and seniors, after 60 credits. Graduate students are assessed it upon entry into the program.
| 2026–27 Annual Rate | Resident | Non-Resident | International |
|---|---|---|---|
| Undergraduate, years 1–2 (standard) | $9,816 | $29,864 | $31,962 |
| Undergraduate, years 3–4 (experiential) | $11,848 | $32,024 | $34,120 |
| Graduate (experiential) | $14,284 | $32,968 | $35,008 |
| Mandatory fees, undergraduate | $1,585.40 | $1,585.40 | $1,585.40 |
| Mandatory fees, graduate | $1,525.40 | $1,525.40 | $1,525.40 |
Applying those rates across each credential gives the following totals, tuition plus mandatory fees only:
- B.S., 120 credits over 4 years: $49,670 resident, $130,118 non-resident, $138,506 international. Two years at the standard rate plus two at the experiential rate.
- M.S., median 1.9 years: $34,670 resident, $72,038 non-resident. A student who finishes at the 30-credit floor in three full-time terms plus one light term pays closer to $29,908 resident or $61,048 non-resident.
- Ph.D., median 4.8 years: $87,700 resident, $182,000 non-resident, before assistantship.
Confirmed costs.
- Mandatory fees comprise technology, health, health facility, student activities, student services, building, and recreation fees. The graduate figure is $60 lower than the undergraduate figure solely because the graduate technology fee is $344 rather than $404.
- Graduate assistants appointed at one-quarter time or more for at least three consecutive months of fall or spring are assessed full-time resident tuition regardless of credits registered.
- Non-resident graduate assistants keep non-resident classification but pay resident rates for the duration of the appointment.
- The spouse of a non-resident quarter-time graduate assistant is also eligible for resident rates during the appointment.
- Deferred billing across three monthly installments costs $20 per semester. Employer reimbursement deferment costs $35 per semester.
- Rates are set annually by the Iowa Board of Regents and published at the end of April.
Be aware that:
- Iowa State’s published graduate cost-of-attendance page shows $12,194 resident tuition, which is the standard graduate rate. Nutritional Sciences students are assessed $14,284. The public cost-of-attendance figure understates this program by $2,090 a year, roughly 17 percent for residents.
- Third-party tuition ranges drawn from federal IPEDS reporting are institution-wide averages. They do not capture the junior-year step-up or the experiential rate, and using them understates a four-year resident bill by around $4,000.
- Graduate tuition is a flat full-time charge at 9 or more credits, so cost tracks semesters enrolled rather than credits taken. Finishing the M.S. in fewer terms saves more than taking fewer credits does. The gap between the two completion paths is about $4,761 resident and $10,989 non-resident.
- The graduate assistantship rule is worth roughly $18,684 a year to a non-resident and $20,724 to an international student, about $35,500 and $39,400 across the M.S. median. It is the single largest cost variable in either graduate credential.
- The figures above exclude course fees, which are attached to specific laboratory sections and listed only in Workday, and exclude the required medical insurance plan for international students.
- Rates cited here come from the Iowa Board of Regents 2026–27 schedule. Verify against Iowa State’s tuition lookup for your specific term, residency, and classification.
For a funded doctoral or master’s student the sticker figures above are close to meaningless, and the real question is whether an assistantship is attached to the offer. For a self-funded student, particularly a non-resident, the same figures are the whole decision. Ask about assistantship availability in the specialization you are applying to before you ask about anything else.
Why Choose This Nutrition Program?
Best suited for students who want nutrition as a laboratory science and are not pursuing the dietitian credential.
The specialization range is unusual. Because the graduate program is administered jointly by Food Science and Human Nutrition and Animal Science, it supports animal nutrition alongside human and molecular nutrition within one degree. A student can work on feed formulation and ruminant metabolism, or on nutrient regulation of gene expression, under the same program structure and with the specialization recorded on the transcript. Programs housed purely in a human nutrition or public health unit cannot offer the animal side at all.
Cost architecture rewards funded students and punishes unfunded ones. The assistantship rule flattens non-resident tuition to resident tuition, which is a larger swing than any other variable on this page. Combined with a thesis-required master’s and a research-heavy doctorate, this is a structure built around funded students working in faculty labs. It works considerably less well for someone paying out of pocket, and there is no online or part-time delivery to soften that.
Vertical progression is genuinely continuous. The undergraduate major carries graduate NUTRS courses on its approved elective list, offers a concurrent B.S. and M.S. option, and the Ph.D. is defined as the M.S. requirements plus additions. A student can enter at 18 and leave with a doctorate without changing institutions or re-establishing a research relationship. Few nutrition departments offer that full ladder in one place.
The honest drawbacks. Everything is campus-based in Ames, with no distance option at any level, which rules the program out for working professionals. Graduate admission runs on a single annual January 15 deadline. The master’s core consumes 22 to 24 of a nominal 30 credits, so plan on exceeding the minimum. Iowa State’s own pages contradict each other on how many specializations exist. And most consequentially, none of these three degrees leads to the RD credential, which is what a large share of people searching for nutrition degrees actually want.
Accreditation
Iowa State University is accredited by the Higher Learning Commission, and has been continuously accredited by that body since 1916. Institutional accreditation is what makes a degree recognized by other universities for transfer and graduate admission, and what makes students eligible for federal financial aid. It applies to the B.S., M.S., and Ph.D. in Nutritional Sciences alike.
There is no programmatic accreditation for nutritional science degrees of this kind, and the Nutritional Sciences programs do not hold any. This is normal for a research-track nutrition degree and is not a deficiency, but it does mean the degree is evaluated on institutional accreditation and departmental reputation rather than on a specialty accreditor’s approval.
The Accreditation Council for Education in Nutrition and Dietetics, the accrediting body of the Academy of Nutrition and Dietetics, does accredit several Iowa State programs. Its scope covers the Didactic Program in Dietetics, whose academic requirements are met by the Dietetics major and by the concurrent Diet and Exercise bachelor’s and master’s curriculum, along with the Master of Professional Practice in Dietetics and the dietetic internship. Nutritional Science is not among them.
That distinction determines credential eligibility. Graduates of the Didactic Program in Dietetics may apply to accredited supervised practice programs, and on completing supervised practice together with a master’s degree become eligible for the Commission on Dietetic Registration examination to practice as a Registered Dietitian Nutritionist. A Nutritional Science graduate does not enter that pathway and would need to complete the didactic requirements separately. Prospective students who want to practice clinically as a dietitian should apply to Dietetics; those who want to conduct nutrition research should apply here.
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