Foundations of Nutrition Flashcards
Nutrition
Naturopathic Nutritionist:
• A Naturopathic Nutritionist recognises that every person is an individual and requires a personalised nutritional approach to health.
Naturopathic Nutrition focuses on:
• Use of whole & organic food as medicine.
• The importance of detoxification and cleansing.
• Looking at the constitution of a patient.
• Finding the cause of disease and not just treating a symptom.
Grass fed 🆚 Grain fed animals:
• Grain-fed meat has a high omega-6 (inflammatory) to omega-3 (anti-inflammatory) ratio - 20:1. It is high in the inflammatory fatty acid, arachidonic acid.
• Grass-fed and wild meat has a ratio of omega-6 to 3 of 2:1. It is 10 times less inflammatory.
• Grass-fed has higher Conjugated Linoleic Acid (CLA), which regulates heart health, body weight, and blood sugar levels.
• Use organic: higher vitamin, mineral and amino acid profile (incl. beta-carotene and vitamin E). Higher animal welfare standards.
Non-organic = may contain chemicals & xenoestrogens.
Red Meat: Pork, Beef & Lamb
Benefits:
• Complete protein (contains all 9 essential amino acids), polyunsaturated fats, iron, zinc, B vitamins, phosphorus, selenium.
Negatives:
• High cholesterol and saturated fats, no fibre.
• High animal protein intake requires more energy to be digested,
therefore, placing more burden on the digestive system, whilst the
high formation of protein metabolites stresses the kidneys.
• Pro-inflammatory – heart disease, diabetes, cancer, arthritis, asthma, osteoporosis, obesity, Alzheimer’s, impotence.
• Acid-forming (due to high sulphur content → sulphuric acid).
Poultry
Chicken, Turkey, Goose, Duck, Pheasant, Partridge, Pigeon, Poussin, Ostrich, Emu.
Benefits:
• Complete protein, Vitamin B1, 2, 3, 5, 6, 12, E, zinc, iron, magnesium. Less saturated fat (but also less B12 than red meat).
Negatives:
• Food poisoning risk (esp. Campylobacter and Salmonella) – always cook thoroughly.
• Often intensively farmed, poor welfare standards.
• Always opt for organic, pasture reared, heritage breeds or, best of all, wild poultry products
Eggs
• A complete protein (more than half the protein is found in white), rich sources of selenium, vitamin A, D, B6, B12, zinc, iron and copper. They are also good for:
– Brain health (with essential nutrients including choline)
– The immune system (with vitamin A, B12 and selenium)
– Healthy pregnancy (folate and choline for embryo development)
– Eye health (with high vitamin A and antioxidants).
– Cardiovascular health (generally raise HDL cholesterol, whilst choline helps to break down the amino acid homocysteine).
• Eggs are high in arachidonic acid and so can be pro-inflammatory.
Fish
Cod, Tuna, Seabass, Mackerel, Sardine Trout, Salmon, Herring.
Benefits:
• Complete protein, omega-3, Vitamin D, B2, calcium phosphorus, iron, zinc, iodine, magnesium, potassium.
• Oily fish (‘SMASH’) – Sardines, Mackerel, Anchovies, Salmon, Herring (these are high in omega-3, vitamin D and lower in mercury due to their small size). Sardines are highest in omega-3.
Negatives:
• Mercury, PCBs (polychlorinated biphenyls) and dioxins are often present in long-living, predatory fish such as tuna, shark, swordfish.
• Overfishing - severely reduced fish numbers in oceans and rivers.
Wild caught 🆚 Farmed Fish:
Always opt for wild-caught fish (not farmed), and avoid canned fish which compromises the nutritional content (esp. vitamin C)❗️
• Farmed fish are raised in overcrowded cages and tanks in contaminated water. They:
– Contain dyes and toxic chemicals (PCBs, dioxins, faecal waste, mercury, pesticides, antibiotics, fungicides).
– Lower omega-3 content.
– Are vaccinated and de-sexed.
– Have more diseases and deformities.
– Fish farming is cruel and harmful for environments & ecosystems
Crustaceans & Shellfish:
- Crustaceans — Crabs, Lobsters, Shrimps, Prawns
- Shellfish — Mussels, Clams, Oysters, Scallops.
Benefits:
• Complete protein, omega-3, vitamin B12, zinc (esp. oysters), iron, magnesium.
Negatives:
• Crustaceans are high in cholesterol.
• Food poisoning is common.
• Prawns are intensively farmed in Asia.
• Waste feeders that accumulate toxins (incl. mercury).
• Avoid unless from guaranteed clean water sources.
Energetics of Animal Foods:
Plant-based Foods:
vegetables, fruit, culinary herbs, grains, legumes, nuts, seeds.
- Organic farming methods yield a higher amount of phytonutrients v. non-organic.
- Beans, legumes, green peas, quinoa, nuts and seeds have higher amounts of essential amino acids. If you combine a variety of plant-based proteins, you can achieve all 9; e.g. combining beans with grains.
- Always opt for organic over conventionally farmed produce❗️
Benefits of plant-based foods:
• Rich and varied source of minerals, vitamins, proteins, carbohydrates, fats, phytonutrients and antioxidants.
• Support a healthy gut microbiome (with prebiotic and probiotic foods) by encouraging diverse
bacterial species. The bacterial digestion of plant fibre produces SCFAs, which support the intestinal barrier.
• well balanced plant-based diet can have a positive impact on cognitive functions and neurological health.
• Reduced risk of heart disease, cancer and obesity.
• Ethical and environmentally friendly, if organic.
Key Definitions:
Root Vegetables:
Celeriac, Beetroot, Carrot, Parsnip, Sweet potato, Potato, Yam.
Benefits:
• Plant ‘store-rooms’ with high levels of antioxidants, vitamins A, B, C and iron. The skin often contains the most nutrients.
• Sources of energy, most have similar carbohydrate levels to grains.
• Medium sweet potato has enough vitamin A to meet RNI.
• Turnip greens have 190mg/100g of calcium, v. 1⁄2 cheddar cheese slice (100mg).
• Beetroot can improve blood circulation and exercise performance by increasing levels of nitric oxide (vasodilator).
Root Vegetables:
Potatoes: Vitamin B2, B3, B5, B6, folate, C, iron, magnesium, potassium, beta-carotene, lutein, quercetin.
Uses: digestive health (high fibre content supports bowel movements and microflora), cardiovascular health (vasodilation→anti-hypertensive).
Sweet potatoes: Vitamin A, B1, B2, B3, B5, B6, C, calcium, iron, magnesium, potassium, beta-carotene (higher content that normal potatoes).
Uses: blood sugar regulation (high fibre content), vision, skin integrity and immunity (vitamin A), brain health (antioxidants enhance cognitive function).
Root Vegetables:
Carrots: Vitamin A, B1, B2, B3, B5, B6, folate, E, C, K, calcium, iron, magnesium, potassium, beta-carotene, lutein.
Uses: vision, male and female reproductive health, immune cell regulation and skin and mucous barriers (vitamin A), cardiovascular health (antioxidants).
Parsnips: Vitamin B2, B3, B5, B6, folate C, E, iron, magnesium, manganese, potassium, beta-carotene, lutein.
Uses: digestive health (high fibre content), eye (retinal) health, bone and cartilage health (manganese is needed as a co-factor), nourish the heart (magnesium, potassium).
Root Vegetables:
Beetroot: Vitamin A, B1, B2, B3, B5, B6, folate, C, E, K, iron, magnesium, manganese, potassium,
beta-carotene, lutein, betalain pigments (antioxidants).
Uses: Contains nitrates, which are converted by the oral and gut bacteria to Nitric Oxide (NO). NO
is a vasodilator that improves blood flow, therefore, great for exercise performance, cognition,
dementia prevention and blood pressure reduction.
Celeriac: Vitamin B6, C, K, calcium, iron, manganese, magnesium, phosphorus, potassium, lutein.
Uses: digestive health (high fibre), bone health (due to vitamin K content, which increases calcium deposition in bone).
Cruciferous Vegetables:
Kale, Cauliflower, Broccoli, Cabbage, Brussels Sprouts, Rocket, Bok Choy, Radish, Turnips, Mustard Greens.
Benefits:
• Rich in vitamins (Bs, C, E, K), calcium, iron, potassium, fibre, flavonoids, Indole-3-carbinol (I3C), sulphur compounds called glucosinolates which are:
– Anti-inflammatory (due to antioxidants).
– Support liver detoxification (and hormone
deactivation; e.g. oestrogen metabolism using l3C).
– Cancer prevention (DNA protection and repair).
– Anti-viral / bacterial, anti-catarrhal (thin respiratory mucus).
• Seasonal eating. Many cruciferous vegetables are in season during autumn and winter – ideal for respiratory congestion.
Cruciferous Vegetables:
Cauliflower: Vitamin B1, B2, B3, B6, folate, C, K, copper, iron, manganese, beta-carotene, lutein, glucosinolates.
Uses: cancer prevention (DNA protective, hormone deactivation, e.g. oestrogen, can induce apoptosis and inhibit angiogenesis), respiratory health (consider the ‘lung shape’), liver detoxification support.
Broccoli: Vitamin A, B1, B2, B3, B5, B6, folate, C, E, K, calcium, iron, magnesium, potassium, selenium, zinc, beta-carotene, glucosinolates. Plus anthocyanins in purple sprouting broccoli.
Uses: Liver function / detoxification (I3C – which is between 10 and 50 times more abundant in broccoli sprouts than normal broccoli), immunity (zinc, selenium), cancer prevention
Cruciferous Vegetables:
Cabbage: Vitamin A, B1, B2, B3, B5, B6, folate, C, K, calcium, iron, magnesium, manganese, phosphorus, zinc, glucosinolates, alpha & beta-carotene, lutein. Red cabbage – anthocyanins.
Uses: immune-boosting (high in vitamin C), arthritis (vitamin C → collagen synthesis in cartilage, anti-inflammatory), bone health (vitamin K→calcium deposition in bones), digestive health (high fibre), supporting gut integrity (glutamine content), cancer prevention (antioxidants).
Cabbage juice: naturally high in L-glutamine, an amino acid used by intestinal cells to help maintain the gut barrier. Decreases intestinal permeability and can be used for peptic ulceration: up to 1 litre per day freshly juiced, sipped over the course of the day for 6-9 days.
Cruciferous Vegetables- glucosinolates:
Glucosinolates are activated by the action of enzymes which are released when the plant is damaged, i.e. cut, chopped, or chewed.
• Cooking cruciferous vegetables higher than 284 ̊F (140 ̊C), for more than a few minutes results in loss of glucosinolates.
• Around 90% of glucosinolates are lost when boiling, but steaming creates insignificant losses. Therefore best eaten raw or lightly steamed.
Glucosinolates and other brassica chemicals are ‘goitrogens’, and may interfere with the production of thyroid hormones by disrupting use of iodine.
• Those diagnosed with hypothyroidism (an underactive thyroid), may have been told to reduce cruciferous vegetable intake.
• However, brassicas don’t seem to increase the risk of hypothyroidism in humans unless they are already deficient in iodine.
• Cooking reduces goitrogens, but also other nutritional benefits.
• Fermentation does not reduce the levels of goitrogens.
Dark Leafy Greens:
Kale, Spinach, Bok Choy, Winter greens, Chard.
Benefits:
• Highest percentage of minerals per calorie.
• High in chlorophyll (which is magnesium-abundant) – alkalising, blood building, anti-cancer, gut healing, cleansing.
• High in carotenoids (antioxidants), calcium and magnesium.
• Most are cruciferous (except spinach) so contain ‘glucosinolates’.
Energetics: cool, hydrating and clear heat downwards out of the body. Help build yin and blood. Bitter greens stimulating digestion and liver detoxification.
Dark Leafy Greens
Kale: Vitamin A, B1, B2, B3, B5, B6, folate, C, K, calcium, iron, manganese, zinc, protein (nearly 3gms
in 1 cup), glucosinolates, flavonoids (e.g. quercetin).
Uses: anaemia (good iron content), bone health (calcium content), eye and skin health (vitamin A and zinc), cardiovascular health (nourishes the heart, regulates LDLs, high antioxidant content.)
Spinach: Vitamin A, B1, B2, B3, B5, B6, folate, C, E, K, calcium, copper, iron, zinc, magnesium, manganese, beta-carotene, lutein.
Uses: blood building (i.e. anaemia), immune-boosting (high levels of vitamin A and C), vision (vitamin A), muscle relaxation / stress management / sleep (high magnesium), cardiovascular
Salad Greens
Lettuce, Rocket, Watercress, Chicory, Endive, Cress, Dandelion.
Benefits:
• Vitamin C, K, carotenoids, folate, minerals, fibre.
• Chlorophyll — alkalising, blood building, anti-cancer, gut healing, cleansing.
Energetics: cool, hydrating, detoxifying. The bitter taste stimulates digestive juice secretion (eat at the start of a meal to aid digestion).
Seasonal eating: Leafy greens grow in spring and summer - ideal for balancing heat, detoxifying and reducing inflammation.
Salad Greens
Lettuce: Vitamin A, B1, B2, B3, B5, B6, folate, C, E, K, calcium, iron, manganese, phosphorus, potassium, zinc, beta-carotene, lutein.
Uses: eye and skin health (vitamin A), bone health (vitamin K).
Watercress: A, B1, B2, B3, B5, B6, folate, C, E, K, calcium, iron, manganese, glucosinolates, alpha & beta-carotene, lutein.
Uses: supports digestion (bitter), cancer-prevention (antioxidants), bone health (calcium, vitamin K), immunity (vitamin C, antioxidant).
Chicory: Vitamin A, B1, B2, B3, B6, folate, C, E, K, calcium, iron, magnesium, manganese, phosphorus, potassium, carotenes, polyphenols, inulin (a prebiotic).
Uses: supporting the microbiome (inulin), anti-inflammatory (polyphenols), digestive health and blood glucose regulation (fibre).
Vegetable Fruit
Tomato, Cucumber, Squash, Bell Pepper, Pumpkin, Aubergine, Courgette, Marrow.
Benefits:
• High nutrient content.
• Yellow, orange, red and purple pigments are antioxidant & anti-inflammatory.
Energetics:
• Cool; high water content cucumber & tomato are hydrating; orange flesh (squash, pumpkin) is warm & nourishing.
• Seasonal eating: Most vegetable fruits grow in the summer, ideal for balancing seasonal heat and dryness.
Vegetable Fruit 🍅
Tomato: B1, B3, B6, folate, C, E, K, chromium, iron, magnesium, manganese, phosphorus, potassium, alpha and beta carotene, lutein, lycopene (potent antioxidant).
Uses: cancer prevention (high antioxidant content), prostate health (lycopene decreases cell damage and is thought to suppress the proliferation of androgen-dependent cancerous prostate cells), cardiovascular health (antioxidants and lycopene lower cholesterol), anti-inflammatory (lycopene modulates LOX and COX expression), vision (lutein and vitamin A content).
*Tip: When tomatoes are cooked or puréed the body is able to absorb higher amounts of lycopene (as it is tightly bound to cell walls).
Vegetable Fruit:
Pepper: Vitamin C, B1, B2, B3, 6, folate, E, K, iron, magnesium, manganese, phosphorus, potassium, alpha & beta-carotene, lutein, quercetin.
Uses: immune-boosting (high vitamin C — 1 cup of chopped red bell pepper provides up to 3 times more vitamin C than an orange), cardiovascular health (high antioxidant content, e.g. carotenes, quercetin), anti-inflammatory and anti-histamine (quercetin).
Okra: B1, B2, B3, B5, B6, folate, C, E, K, calcium, copper, iron, magnesium, manganese, phosphorus, zinc, alpha & beta-carotene, lutein, mucilage.
Uses: bone health (calcium), digestive health (high fibre content), cardiovascular health (high antioxidant content).
Vegetable Fruit:
Aubergine: Vitamin B1, B2, B3, B5, B6, folate, C, E, K, copper, iron, magnesium, manganese, potassium, zinc, anthocyanins
– nasunin (an antioxidant that protects against DNA damage).
Uses: cancer prevention (high antioxidant content) and possible anti-hypertensive effects (magnesium, potassium).
Squash: Vitamin B1, B2, B3, B5, B6, folate, C, E, K, calcium, copper, iron, magnesium, potassium,
phosphorus, zinc, alpha & beta-carotene, lutein.
Uses: vision (vitamin A for formation of photopigments in the retina), skin health (e.g. acne, eczema – due to vitamin A’s role in skin barrier), cardiovascular health (high antioxidant content).