Learn The Nutrition Library → Module 06

Life-stage nutrition: preconception to end of life

The nutrient priorities and feeding strategies that change at each developmental stage — preconception, pregnancy, infancy, toddlerhood, childhood, adolescence, adult years, perimenopause and menopause, older adulthood, and frailty. A generic 'healthy diet' is malpractice in a clinical encounter; each stage has its own at-risk nutrients, screening tools, and feeding architecture.

17 min read

Life-stage nutrition: preconception to end of life

TL;DR. "Eat real food, mostly plants, not too much" is right for an unscreened adult and wrong for almost everyone else. Folate matters before pregnancy is known; iron matters at menarche; DHA matters in the third trimester and in the eighth decade. The Satter Division of Responsibility solves toddler feeding without coercion. LEAP (2015) reversed twenty years of allergen-avoidance advice. Sarcopenia begins in the forties and accelerates after seventy; older adults need more protein per kilogram than younger adults. Each life stage has its own priority nutrients, screening tools, and failure modes.

What you'll learn

  • The three-month preconception window and what to start before pregnancy is known.
  • Trimester-by-trimester calorie and nutrient demands, and the pregnancy food-safety list.
  • Lactation energetics, postpartum thyroid, perinatal-depression nutrient links.
  • Why exclusive breastfeeding is the AAP/WHO recommendation, and what to do when it's not feasible.
  • The 6–12-month complementary-feeding window, baby-led weaning, the LEAP-driven peanut reversal.
  • Toddler neophobia and the Satter Division of Responsibility.
  • Tanner staging, peak bone-mass window, adolescent eating-disorder onset.
  • Perimenopause, menopausal estrogen withdrawal, the bone and body-composition shift.
  • Sarcopenia, the older-adult protein debate, B12 decline, fall risk.
  • Frailty and the shift to comfort feeding at end of life.

Priority-nutrient DRIs by life stage

Stage Energy Protein Iron Calcium Vit D Folate
Preconception F 0.8 g/kg 18 mg 1,000 mg 600 IU 400 mcg
Pregnancy T1/T2/T3 +0/+340/+450 1.1 g/kg 27 mg 1,000 mg 600 IU 600 mcg DFE
Lactation +330–400 1.3 g/kg 9 mg* 1,000 mg 600 IU 500 mcg
Infant 0–6 mo 1.52 g/kg 0.27 mg 200 mg AI 400 IU 65 mcg AI
Toddler 1–3 yr 1.05 g/kg 7 mg 700 mg 600 IU 150 mcg
Child 4–8 yr 0.95 g/kg 10 mg 1,000 mg 600 IU 200 mcg
Adolescent 9–18 0.85 g/kg 15 F / 11 M 1,300 mg 600 IU 300–400
Adult 19–50 0.8 g/kg 18 F / 8 M 1,000 mg 600 IU 400 mcg
Adult 51–70 1.0–1.2 ideal 8 mg 1,200 F / 1,000 M 600 IU 400 mcg
Older adult 71+ 1.0–1.2 g/kg 8 mg 1,200 mg 800 IU 400 mcg

*Exclusively lactating amenorrheic mother. Pregnancy DHA 200+ mg/day; iodine 220 mcg (290 in lactation, 150 elsewhere). RDA/AI per IOM/National Academies; older-adult protein per PROT-AGE consensus.

1. Preconception (start three months before conception)

The most consequential dietary intervention in a person's life often happens before they know they are pregnant. The neural tube closes between days 21 and 28 after conception, before most women have had a positive test. Folate adequacy at that point determines whether the tube closes cleanly or fails — producing spina bifida, anencephaly, or encephalocele. The U.S. Public Health Service has recommended 400 mcg folic acid daily since 1992 for any woman who could become pregnant; the 1998 fortification of enriched grain products cut the U.S. NTD rate by ~35 percent. Women with a prior NTD-affected pregnancy take 4 mg daily, ten times the standard dose.

Iodine is the second preconception nutrient most often missed. Adequacy in the first trimester drives fetal thyroid hormone production and brain development, and mild-to-moderate deficiency has been linked to lower offspring IQ (Bath et al., Lancet 2013). Many U.S. prenatals still omit iodine, and non-iodized household salt (kosher, sea, "pink Himalayan") is the silent driver.

DHA accumulates rapidly in the fetal brain in the third trimester. The consensus recommendation (ISSFAL, EFSA) is at least 200 mg daily through pregnancy and lactation; two servings of low-mercury fatty fish per week supplies it, and algae-based DHA works for vegetarians.

Alcohol cessation is recommended before conception because the first-trimester safe dose is unknown. Cannabis cessation has moved into the same category — the AAP's 2018 report concluded no prenatal level is established as safe and modern flower runs 5× the THC of the older epidemiology. Caffeine guidance is ~200 mg/day. Choline (450 mg in pregnancy, 550 in lactation) is flagged by the AAP and AMA as routinely under-consumed and is missing from many prenatals at adequate dose; eggs, beef liver, and soybeans are the densest food sources.

2. Pregnancy by trimester

Calorie needs do not rise in T1; they rise by ~340 kcal/day in T2 and ~450 in T3 (IOM 2009) — a peanut butter sandwich, not a second dinner. "Eating for two" overshoots by a factor of four. Excess gestational weight gain beyond the IOM 2009 ranges (25–35 lb normal-weight, 15–25 overweight, 11–20 obese, 28–40 underweight) is the best-validated predictor of postpartum weight retention, gestational diabetes, LGA delivery, and offspring obesity. Iron RDA jumps from 18 to 27 mg; many practices empirically supplement 30–60 mg elemental iron and check ferritin at 28 weeks. Vitamin D adequacy (25-OH D >30 ng/mL) reduces pre-eclampsia and preterm birth risk in observational data.

Food safety in pregnancy is specific. Listeria monocytogenes is the named threat — soft cheeses from unpasteurized milk, unheated deli meats, refrigerated smoked seafood, raw sprouts, unpasteurized juices. Pregnancy raises listeriosis risk 10–20× and the consequences (stillbirth, neonatal meningitis) are severe. Toxoplasma gondii drives the cat-litter and undercooked-meat advice. Methylmercury from large predatory fish is the third hazard; the FDA/EPA 2017 advisory categorizes fish into best choices (salmon, shrimp, sardines, tilapia, pollock, catfish — 2–3/week), good choices (one/week), and avoid (swordfish, king mackerel, tilefish, shark, bigeye tuna).

Gestational diabetes affects 7–14 percent of pregnancies (higher in Asian, Hispanic, Black populations). Universal 24–28-week screening with the 50-g glucose challenge identifies it. Management is medical nutrition therapy first — carbohydrate consistency across meals, ~175 g/day minimum, paired with protein and fat — and insulin or metformin if ADA targets are missed (fasting <95, 1-hour <140, 2-hour <120 mg/dL). Low-dose aspirin in high-risk women is the evidence-based pre-eclampsia preventive.

3. Postpartum and lactation

Lactation costs ~500 kcal/day. The recommendation is 330–400 additional kcal above pre-pregnancy need, with the residual coming from pregnancy fat stores by design. Aggressive postpartum dieting (<1,500 kcal) suppresses supply. Fluid demand rises to ~13 cups/day, keyed to thirst plus a glass at every feed.

Postpartum thyroid dysfunction affects 5–10 percent of women in the year after delivery — hyperthyroid in months 1–3, hypothyroid in months 3–6, mostly resolving by month 12. Perinatal depression affects ~1 in 7 mothers; B12, folate, and omega-3 status are independently associated. The mechanism runs through one-carbon metabolism: SAMe, the methyl donor for monoamine synthesis, depends on folate, B12, B6, and choline.

4. Infancy 0–6 months

The AAP, WHO, and Academy of Nutrition and Dietetics all recommend exclusive breastfeeding for the first six months. The evidence base spans infectious morbidity (NEC, gastroenteritis, otitis), allergic disease, neurocognitive outcomes, maternal weight, breast and ovarian cancer, and diabetes. Breast milk composition is dynamic: colostrum (first 3–5 days) is high-protein, high-immunoglobulin, low-volume; transitional milk follows for 1–2 weeks; mature milk runs ~70 kcal/100 mL with ~7% carbohydrate, 4% fat, 1% protein. Foremilk is watery, hindmilk fatty.

When breastfeeding is not feasible or chosen, iron-fortified infant formula is the substitute. Cow-milk-based formulas are the default. Soy is reserved for galactosemia and the rare case of milk allergy without soy cross-reactivity. Extensively hydrolyzed formulas (Nutramigen, Alimentum) are first-line for confirmed milk allergy; amino-acid-based formulas (Neocate, Elecare) are reserved for the most reactive infants. The marketing distinction between "organic," "European," and "goat milk" formulas is not meaningfully nutritional — FDA-regulated U.S. formulas meet the same compositional minimums.

Vitamin D 400 IU/day from birth is recommended for all exclusively or partially breastfed infants because breast milk is a poor vitamin D source. Formula-fed infants reach 400 IU at ~32 oz/day. Iron stores laid down in utero last about four months in term infants — earlier in preterm — so iron-rich complementary foods at six months cover the transition.

5. Complementary feeding 6–12 months

Solid foods start when developmental readiness arrives — typically around six months: head control, sitting with support, doubled birth weight, loss of the tongue-thrust reflex, interest in food. Spoon-fed purees and baby-led weaning both work in head-to-head trials with similar growth and nutrient adequacy. Texture progresses thin purees → thick → soft mashed → soft pieces → table foods. Iron-rich (fortified cereal, meat, beans) and zinc-rich foods are the priority. No honey before 12 months (botulism). No cow's milk as a beverage before 12 months; yogurt and cheese in small amounts are fine. No added salt or sugar.

The single largest reversal in pediatric nutrition advice this century is the early peanut introduction recommendation. The 2000 AAP guidance was to delay peanuts until age three in high-risk infants. The LEAP trial (Du Toit et al., NEJM 2015) randomized 640 infants 4–11 months with severe eczema or egg allergy to peanut consumption (~6 g protein/week) or avoidance through age five. Peanut allergy at age five was 1.9 percent in the consumption group versus 13.7 percent in the avoidance group — an 81 percent relative reduction. The 2017 NIAID addendum recommends introducing peanut between 4 and 6 months in high-risk infants (after testing) and routinely in lower-risk infants once other solids are tolerated. This is one of the rare nutrition recommendations supported by a single, well-powered RCT.

True IgE-mediated food allergy affects 5–8 percent of U.S. children. The "Big Nine" allergens (milk, eggs, peanuts, tree nuts, soy, wheat, fish, shellfish, plus sesame per the 2023 FASTER Act) account for most reactions. Milk, egg, soy, and wheat allergies usually resolve by school age; peanut, tree nut, and shellfish allergies usually do not.

6. Toddler 1–3 years

Neophobia — fear of new foods — peaks between 18 and 36 months. It is developmental, not pathological, and served evolutionary purposes. Toddlers commonly require 10–15 neutral exposures before accepting a new food; one refusal is not a verdict. Food jags are also normal.

The Ellyn Satter Division of Responsibility is the workable framework: parents decide what is offered, when meals and snacks happen, and where eating takes place; the child decides whether to eat and how much. Coercion ("three more bites"), bribes ("dessert if you finish"), short-order cooking, and grazing access all violate the model and predict more, not less, picky eating in follow-up.

Toddler calorie needs are ~1,000–1,400 kcal/day. Whole milk from age 1 supports brain myelination and shifts to reduced-fat after age two. Cap milk at 16–24 oz/day — beyond that, milk displaces solid food and drives "milk anemia." Juice is limited to 4 oz/day for ages 1–3 (AAP).

7. Childhood 4–12 years

School-age nutrient needs scale with size and activity. EER runs ~1,200–1,800 kcal/day and rises sharply at the growth spurt. Calcium RDA is 1,000 mg ages 4–8, rising to 1,300 mg at 9–18 — the highest of any life stage, because peak bone-mass accrual runs through the teen years.

The "two cups of milk a day" recommendation is a frequent over-prescription. Above 2–3 cups (16–24 oz), milk crowds out iron-rich solid foods and increases iron-deficiency anemia risk. Current AAP guidance is to use dairy as one calcium and vitamin D source, not the sole one.

The U.S. school meal environment matters disproportionately for food-insecure households. The Healthy, Hunger-Free Kids Act of 2010 raised whole-grain and vegetable requirements; the NSLP reaches ~30 million children daily, and packed lunches are typically lower in fruits and vegetables and higher in sugar than reimbursable school meals.

BMI-for-age (CDC 2–18, WHO 0–24 months) is the screening tool: overweight ≥85th percentile, obesity ≥95th, severe obesity ≥120% of the 95th. Linear growth that flattens while weight climbs is the early warning. Pediatric NAFLD reached 13 percent by 2017 (NHANES), with rates as high as 42 percent in obese Hispanic boys — an epidemic that did not exist in the 1980s.

8. Adolescence

The adolescent growth spurt is the second-largest growth event of human life. Tanner staging 1–5 tracks pubertal development across breast, pubic hair, and genital criteria, and nutrient needs track Tanner stage more reliably than chronological age. Iron is the highest premenopausal requirement (15 mg/day in menstruating girls) and the most common adolescent deficiency in U.S. girls. Calcium 1,300 mg/day is the highest in any life stage because ~40–50 percent of adult peak bone mass is laid down in the four years surrounding the growth spurt. Bone density not accrued in this window is essentially unrecoverable.

The adolescent eating-disorder onset window — ages 12 to 25 — captures most lifetime first cases of anorexia, bulimia, and binge eating disorder. Anorexia nervosa has the highest mortality of any psychiatric illness (5–10 percent crude). Early identification — restrictive eating, rapid weight loss, amenorrhea, social withdrawal around food, excessive exercise — predicts better outcome. Pediatric refeeding requires medical oversight to avoid refeeding syndrome (phosphorus, potassium, magnesium shifts that can produce cardiac arrhythmia in the first week).

The Female Athlete Triad / RED-S framework captures the low-energy-availability cluster — disordered eating, menstrual disruption, low bone density — most prevalent in lean-build sports (running, gymnastics, dance, wrestling). The intervention is calorie adequacy, not bone-density medication.

9. Adult reproductive years (non-pregnant, non-lactating)

The 2020–2025 Dietary Guidelines nutrients-of-concern list — under-consumed — is calcium, vitamin D, potassium, fiber, and iron in women of childbearing age; over-consumed are added sugars, saturated fat, and sodium. 88 percent of U.S. adults miss the vegetable target and 76 percent miss fruit (NHANES 2017–2018). Iron and folate diverge most by sex and reproductive plans.

10. Perimenopause and menopause

Perimenopause — the 4–10-year transition before the final menstrual period — typically begins in the early-to-mid forties, driven by declining ovarian estradiol. Bone resorption outpaces formation in the late perimenopausal years; by the first five years after the FMP, women lose ~10 percent of total bone mass. The intervention is calcium 1,200 mg/day (RDA rises from 1,000 at age 51), vitamin D 600–800 IU, and weight-bearing plus resistance exercise. Bisphosphonates, denosumab, and the newer anabolic agents (teriparatide, romosozumab) are pharmacological tools when DXA T-score crosses −2.5 or FRAX crosses the treatment threshold.

Body-composition shift is the second major change. Visceral adipose tissue rises after the FMP independent of weight change; resting metabolic rate falls by ~100 kcal/day. Most women gain ~5–7 lb across the transition with no change in habits — a metabolic shift, not a willpower failure. Resistance training preserves lean mass; protein at the upper end of the adequate range (1.0–1.2 g/kg) supports it. Sleep disruption from vasomotor symptoms compounds insulin resistance.

The soy-and-breast-cancer concern is a non-issue in current evidence. Pooled data from Asian and Western populations consistently show whole-soy intake is neutral or modestly protective for breast cancer incidence and recurrence (Chi et al., J Clin Oncol 2013; Shu et al., JAMA 2009). The American Cancer Society and AICR both endorse soy foods for women with a history of breast cancer.

11. Older adult 65+

Sarcopenia — the age-related loss of skeletal muscle mass and function — begins in the fourth decade and accelerates after seventy. By age 80, the average adult has lost 30–40 percent of peak muscle mass. The driver is anabolic resistance: the same dose of dietary protein produces less muscle protein synthesis in older muscle, mediated by reduced mTORC1 signaling and a higher leucine threshold. The 0.8 g/kg RDA underestimates older-adult requirement by 25–50 percent. PROT-AGE (Bauer et al., JAMDA 2013) recommends 1.0–1.2 g/kg for healthy older adults and 1.2–1.5 in acute or chronic illness, distributed at ~30 g per meal to repeatedly cross the leucine threshold.

The anorexia of aging is the physiological reduction in appetite that accompanies normal aging — reduced taste and smell, slower gastric accommodation, increased postprandial CCK and PYY, polypharmacy-driven dysgeusia, depression, social isolation, dental issues, dysphagia. Unintentional weight loss of 5 percent over six months or 10 percent over a year is a sentinel event.

B12 absorption falls progressively after age fifty because of atrophic gastritis (10–30 percent of adults over 50), which reduces intrinsic factor and free-acid release of food-bound B12. Crystalline B12 from fortified foods or supplements bypasses the problem. Vitamin D rises from 600 to 800 IU at age 70; pooled meta-analyses show ~20 percent fall reduction at 700–1,000 IU/day (Bischoff-Ferrari, BMJ 2009). Hydration risk rises with declining thirst sensitivity, renal concentrating ability, and diuretic use; scheduled fluid intake — not waiting for thirst — is the intervention. Falls are the leading cause of fatal and nonfatal injury in adults 65+; the modifiable nutrition contributors are vitamin D, protein, calcium, and alcohol limitation.

12. Frailty and end-of-life

Frailty is a clinical syndrome — Fried's phenotype is three or more of: unintentional weight loss, exhaustion, weakness (grip strength), slow walking speed, low physical activity. About 15 percent of community-dwelling adults over 65 are frail and another 45 percent pre-frail. Once established, frailty is partially reversible with resistance training and protein adequacy; in advanced cases the trajectory bends downward.

At the end of life, the goals of nutrition therapy change. In hospice and at the end of progressive dementia or cancer, the patient often stops wanting to eat. Aggressive force-feeding or tube placement in late dementia does not extend survival, improve function, or reduce aspiration risk; the American Geriatrics Society and Choosing Wisely campaign recommend against routine PEG placement in advanced dementia. Comfort feeding — offering small amounts of preferred foods by mouth without pressure to consume targets — is the standard of care. The shift is not from caring to not caring; it is from extending biological life to relieving distress.

Frequently asked questions

Is breast really better?

The evidence base is large and consistent: lower rates of NEC, gastroenteritis, otitis, asthma, atopic dermatitis, SIDS, and childhood obesity and leukemia in breastfed infants, plus maternal benefits including faster postpartum weight loss and lower breast and ovarian cancer risk. Effect sizes are modest but aggregate. The pragmatic counterweight: not breastfeeding is sometimes the right choice (medication, trauma, supply, mental health, work without protected pumping), and formula-fed infants thrive.

Do I need a prenatal at preconception?

Yes, ideally three months before trying. The minimum pill covers folate (400 mcg), iodine (150 mcg), vitamin D (600+ IU), iron, and choline. Many OTC prenatals omit iodine or choline; check the label. With a prior NTD-affected pregnancy, take 4 mg folic acid.

Is fish safe in pregnancy?

Yes, with species discrimination. FDA/EPA 2017: best choices (salmon, sardines, shrimp, tilapia, pollock, anchovies, herring, trout, catfish — 2–3/week); good (halibut, mahi-mahi, snapper, yellowfin tuna — one/week); avoid (swordfish, king mackerel, tilefish, shark, bigeye tuna, marlin, orange roughy). Two servings/week of low-mercury fatty fish supplies DHA without exceeding methylmercury limits.

Should toddlers drink whole or skim milk?

Whole from 12–24 months, then transition. The fat supports brain myelination and the calorie density helps small stomachs hit energy needs. After age two the AAP shifts to reduced-fat or skim. Newer evidence (Vanderhout et al., AJCN 2020) suggests whole milk through preschool may not increase obesity risk, but the standard remains 1% or skim after age two.

Is whole milk really worse than 2%?

For most adults in an otherwise reasonable diet, the practical difference is small. The cardiovascular argument for low-fat dairy is saturated-fat displacement; counter-evidence (PURE cohort, dairy-fat meta-analyses) suggests dairy fat may be neutral at modest intakes. The Dietary Guidelines still recommend low-fat or fat-free dairy, but certainty has weakened since 2015.

Do older adults need MORE protein than younger adults?

Yes. The 0.8 g/kg RDA underestimates older-adult requirement because of anabolic resistance. PROT-AGE recommends 1.0–1.2 g/kg for healthy older adults at ~30 g per meal (≈2.5 g leucine). In acute illness, target rises to 1.2–1.5 g/kg. The exception is severe renal impairment, where protein is intentionally restricted.

When should I introduce peanut, egg, and other allergens?

Early, not late. LEAP, EAT, PETIT, and the 2017 NIAID addendum reversed the old "delay allergens" advice. For high-risk infants (severe eczema, egg allergy), introduce peanut at 4–6 months after pediatric evaluation. For lower-risk infants, introduce peanut and other allergens (egg, dairy, wheat, soy, tree nut butters, sesame, fish) routinely once other solids are tolerated. Avoid whole nuts (choking). Keep allergens in the diet consistently once introduced.

Is "carb cycling" a real thing for menopause?

No. The marketing claim — that midlife women need to cycle carbohydrate intake with their (often absent) cycle — has no controlled-trial evidence base. The underlying observations (worsening glucose tolerance with estrogen decline, visceral-fat shift) respond to general carbohydrate-quality improvements: lower glycemic load, more fiber, more protein, more resistance training. The "cycling" framing is the kind of marketing Duyff's junk-science red-flags section is built to catch.

Sources

  1. Cox, J. T., Sullivan, C. S. "Nutrition in Pregnancy and Lactation." Chapter 14 in Raymond, J. L., Morrow, K., eds., Krause and Mahan's Food and the Nutrition Care Process, 16th edition (Elsevier, 2023). IOM 2009 weight-gain ranges; pregnancy and lactation DRIs; common deficiencies; lactation physiology.
  2. McKean, K. N., Mazon, M. O. (Seattle Children's). "Nutrition in Infancy." Chapter 15 in Krause 16e. Breast milk composition; formula categories; complementary feeding through year one.
  3. Larson, N., Leak, T. M., Stang, J. S. "Nutrition in Adolescence." Chapter 17 in Krause 16e. Tanner staging; adolescent DRIs; eating-disorder onset; RED-S/Female Athlete Triad.
  4. Raymond, J. L., Callihan, L. "Nutrition in Aging." Chapter 20 in Krause 16e. Geriatric physiology; MNA / MNA-SF; sarcopenia; anorexia of aging.
  5. Garner, C. D. "Nutrition in Pregnancy." Chapter 52 in Tucker, K. L., Duggan, C. P., Jensen, G. L., et al., eds., Modern Nutrition in Health and Disease, 12th edition (Jones & Bartlett, 2026). Nutrient demands; pre-eclampsia; gestational diabetes.
  6. Bales, C. W., Johnson, M. A. "Nutrition in Older Adults." Chapter 56 in MNHD 12e. Protein 1.0–1.2 g/kg debate; B12, vitamin D, calcium at risk.
  7. Gropper, S. S., Smith, J. L., Carr, T. P. Advanced Nutrition and Human Metabolism, 8th edition (Cengage, 2022). One-carbon metabolism (Ch 9); urea cycle and mTOR-leucine signaling (Ch 6); fed-fast integration (Ch 7).
  8. Duyff, R. L. Academy of Nutrition and Dietetics Complete Food and Nutrition Guide, 5th edition (Houghton Mifflin Harcourt, 2017). "Eating for two" debunking; pregnancy fish list; Satter Division of Responsibility; LEAP-era allergen introduction.
  9. Du Toit, G., Roberts, G., Sayre, P. H., et al. "Randomized Trial of Peanut Consumption in Infants at Risk for Peanut Allergy." New England Journal of Medicine 2015;372:803–813. DOI: 10.1056/NEJMoa1414850. The LEAP trial.
  10. Bath, S. C., Steer, C. D., Golding, J., Emmett, P., Rayman, M. P. "Effect of inadequate iodine status in UK pregnant women on cognitive outcomes in their children: results from the Avon Longitudinal Study of Parents and Children (ALSPAC)." The Lancet 2013;382(9889):331–337.
  11. Bauer, J., Biolo, G., Cederholm, T., et al. "Evidence-based recommendations for optimal dietary protein intake in older people: a position paper from the PROT-AGE Study Group." JAMDA 2013;14(8):542–559.
  12. Bischoff-Ferrari, H. A., Dawson-Hughes, B., Staehelin, H. B., et al. "Fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials." BMJ 2009;339:b3692.
  13. Institute of Medicine. Weight Gain During Pregnancy: Reexamining the Guidelines (National Academies Press, 2009). The IOM 2009 gestational weight gain ranges.
  14. American Academy of Pediatrics, Section on Breastfeeding. "Breastfeeding and the Use of Human Milk." Policy statement, Pediatrics 2022;150(1):e2022057988.
  15. FDA / EPA. "Advice About Eating Fish: For Those Who Might Become or Are Pregnant or Breastfeeding and Children Ages 1 to 11 Years." 2017 (updated 2021). The pregnancy fish list.
  16. Satter, E. Child of Mine: Feeding with Love and Good Sense (Bull Publishing, 1991, revised 2000). The Division of Responsibility framework.

Related modules

  • Macronutrients (core C1)
  • Micronutrients and DRIs (core C2)
  • Clinical nutrition by condition (deep dive)

Related glossary terms