5 Daily Habits That Cover Most Nutrient Gaps

Meeting Australian NRV targets and physical activity guidelines simultaneously — at minimal cost — is entirely achievable. Five daily habits cover the vast majority of common deficiencies.

The principle: Rather than tracking 17 nutrients individually, these habits act as a system. Do all five daily, add the weekly habits below, and you’ll cover the nutritional gaps that affect the majority of Australians.

The five daily habits

2 eggs

Covers: B12, choline, selenium, Vitamin D, and protein. Eggs are one of the most nutrient-dense foods per dollar available in Australian supermarkets. Two eggs provides around 12g complete protein, 1.2µg B12 (half the daily RDI), 150mg choline, and 80–100 IU Vitamin D.

~$0.60

Dairy — yoghurt or 250 mL milk

Covers: calcium and iodine. A 200g serve of yoghurt provides approximately 300mg calcium (30% of adult RDI). Iodine in Australian dairy averages 50–70µg per 250mL — a meaningful contribution to the 150µg daily target. Choose plain, unsweetened yoghurt for the best nutritional value per dollar.

~$0.40–0.70

Citrus or capsicum — any Vitamin C source

Covers: Vitamin C (the iron absorption multiplier). Adding Vitamin C to any plant-iron meal can triple iron absorption. Half a capsicum, a squeeze of lemon juice, a small orange, or a handful of frozen broccoli all deliver 40–80mg — well above the 75–90mg RDI. The cheapest option is often a squeeze of lemon on lentils.

~$0.20–0.40

30 min brisk walk

Covers: Australian physical activity guidelines, bone loading (weight-bearing exercise), and Vitamin D synthesis. A 30-minute walk with arms and legs exposed in reasonable UV conditions generates 400–1,000 IU of Vitamin D. This is your free Vitamin D supplement. It also meets the minimum daily moderate activity target for adults.

Free

A handful of leafy greens

Covers: folate, Vitamin K, magnesium, Vitamin A. A 60g handful of spinach, silverbeet, or kale delivers roughly 130µg folate (30% of the 400µg RDI), 300µg Vitamin K, 50mg magnesium, and significant Vitamin A as beta-carotene. Cook in olive oil to improve absorption of the fat-soluble vitamins.

~$0.20

Weekly habits that cover the rest

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Organ meat once a week — chicken liver works best

One 100g serve of chicken liver covers: B12 for the entire week, your daily Vitamin A target, half your weekly iron target, and significant folate and zinc. Hidden in bolognese or a stir-fry with strong spices, most families don’t detect it. This is the single highest return-on-investment food in Australian supermarkets.

~$1.00–1.50 per serve

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Sardines once a week

Covers: Vitamin D, omega-3 (DHA/EPA), calcium (the bones), and B12. One tin provides approximately 400–500 IU Vitamin D, 1,500mg omega-3, and 350mg calcium — equivalent to a glass of milk. Two tins a week covers most adults’ weekly omega-3 target.

~$1.80 per tin

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2 × strength training sessions

Preserves muscle mass, bone density, and insulin sensitivity — the three things that decline fastest with age and inactivity. No gym required: resistance bands, bodyweight exercises, or heavy household tasks all count. Australian guidelines recommend muscle-strengthening activities at least 2 days per week for adults.

Free

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Legumes 3–4 times a week

Lentils, chickpeas, kidney beans, and cannellini beans: plant protein, fibre, magnesium, zinc, folate, and iron. At $1.40–1.80 per 400g tin (roughly 3–4 serves), they’re the cheapest protein source available. Always pair with Vitamin C to maximise iron absorption.

~$0.25–0.50 per serve

What this costs

💰 Weekly budget summary

Single adult meeting all NRV targets and PA guidelines: ~$47–55/week on food.

Family of 4 following this framework: ~$107–125/week.

Gym membership or supplements: not required. Sun, eggs, sardines, liver, lentils, and a park cover the vast majority of needs for most demographics.

For food cost comparisons and the full tier 1/2/3 ranked food list, see the Budget Nutrition Arsenal. For the weekly shopping list with prices, see Smart Shopping.

Sources: NHMRC Australian Nutrient Reference Values (2006, updated 2017) · Department of Health Australian Physical Activity & Sedentary Behaviour Guidelines (2021) · ABS National Nutrition & Physical Activity Survey 2023 · USDA FoodData Central nutrient database

5 Daily Habits That Cover Most Nutrient Gaps

The five daily habits

Weekly habits that cover the rest

What this costs

💰 Weekly budget summary

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