The Basics

What Is the Keto Diet? (And Why It Works)

The ketogenic (keto) diet is a high-fat, low-carbohydrate eating plan that shifts your body's primary fuel source from glucose to fat-derived ketones — a metabolic state called ketosis.

When you drastically reduce carbohydrate intake (typically to under 50g of net carbs per day), your liver begins converting fat into ketone bodies, which become your body and brain's preferred energy source. For women over 40, this metabolic shift can be especially powerful — particularly during perimenopause and menopause when hormonal changes make traditional calorie-restriction diets less effective.

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Rapid Fat Loss

By lowering insulin levels, your body unlocks stored fat as a primary fuel source.

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Mental Clarity

Ketones are a highly efficient brain fuel — many people report reduced brain fog within days.

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Sustained Energy

No more afternoon crashes. Fat fuel burns steadily without the glucose rollercoaster.

South Africa's Angle

Keto & Banting: What's the Difference? (And Why South Africans Are Ahead of the Curve)

If you've heard of the Banting diet — popularised in South Africa by Professor Tim Noakes and the Real Meal Revolution — then you already know more about keto than you think. Both Banting and keto are LCHF (low-carb, high-fat) eating approaches, and the principles are nearly identical.

South Africans who've followed Banting will find the transition to keto completely natural: the food lists overlap almost entirely, the fat-first philosophy is the same, and the goal — shifting your body away from sugar-burning towards fat-burning — is identical. The key distinction is that keto is stricter about total carb limits and specifically aims to induce measurable ketosis.

Feature🇿🇦 BantingKeto
Daily Carb LimitGenerally under 25–75g (varies by phase)Strictly under 20–50g net carbs
Fat FocusHigh fat, moderate proteinVery high fat (60–75% of calories)
ProteinModerate — quality over quantityModerate — excess can disrupt ketosis
Food ListsGreen / Orange / Red list systemGeneral LCHF principles
Ketosis GoalNot always explicitly measuredExplicit goal; often tracked
South African ContextDeveloped locally by Prof. Tim NoakesInternational, but aligns with Banting

✅ Good news for Banting followers: All foods on the Banting Green List are fully keto-compatible. You can follow this 7-day plan without changing your shopping habits significantly.

The Plan

Your 7-Day Keto Meal Plan: Day-by-Day Guide

This free printable keto meal plan PDF keeps carbs under 25g net per day, prioritises whole foods, and uses ingredients you'll find at any South African supermarket or Pick n Pay. Every meal includes a macro breakdown to keep you on track. Download the 7-day keto meal plan PDF below to save it to your phone or print it for the fridge.

MealDescriptionProtein (g)Carbs (g)Fat (g)Cal (approx)
🗓️ Monday
Breakfast2 scrambled eggs with ¼ cup spinach and 1 tbsp avocado oil14318250
LunchGrilled chicken salad with mixed greens, avocado, and olive oil dressing30525400
DinnerPan-seared salmon with roasted asparagus and 1 tbsp butter35530450
📊 Monday Daily Total~79g~13g~73g~1,100
🗓️ Tuesday
Breakfast80g smoked salmon with ¼ cup full-fat cream cheese20120280
LunchLarge salad with grilled prawns, mixed greens, cucumber, and a light vinaigrette30520350
DinnerBeef mince stir-fry with broccoli and cauliflower rice35535500
📊 Tuesday Daily Total~85g~11g~75g~1,130
🗓️ Wednesday
BreakfastFull-fat cottage cheese with ¼ cup strawberries and a handful of walnuts14510180
LunchTuna salad in large lettuce cups with 1 tbsp full-fat mayo30520300
DinnerRibeye steak with roasted Brussels sprouts and 1 tbsp olive oil40540550
📊 Wednesday Daily Total~84g~15g~70g~1,030
🗓️ Thursday
Breakfast3 rashers streaky bacon with 2 fried eggs18125350
LunchLeftover steak sliced cold over mixed greens with olive oil and lemon40540450
DinnerChicken thighs (skin-on) with roasted courgette and cherry tomatoes35530400
📊 Thursday Daily Total~93g~11g~95g~1,200
🗓️ Friday
Breakfast2 fried eggs with 60g smoked salmon and 1 tbsp full-fat cream cheese20122290
LunchLeftover chicken thighs with a simple green salad and avocado35530400
DinnerGarlic butter prawns with zucchini noodles and parmesan30525450
📊 Friday Daily Total~85g~11g~77g~1,140
🗓️ Saturday
Breakfast80g smoked salmon with cream cheese on a bed of baby spinach and sliced cucumber20120280
LunchGreek-style salad with feta, olives, cucumber, tomato, and olive oil25520350
DinnerPork chops with roasted green beans and 1 tbsp butter35530450
📊 Saturday Daily Total~80g~11g~70g~1,080
🗓️ Sunday
Breakfast3-egg omelette with diced ham, cheddar cheese, and mushrooms18220300
LunchLeftover pork chops sliced over a rocket salad with olive oil35530450
DinnerGrilled chicken breast with roasted broccoli, garlic, and 1 tbsp olive oil30525400
📊 Sunday Daily Total~83g~12g~75g~1,150
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Pro Tip: Prep your proteins on Sunday afternoon — grill a batch of chicken thighs, hard-boil eggs, and portion your salmon. Weekday meals become 10-minute assemblies, not cooking sessions.

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Free Printable Keto Meal Plan PDF Save this 7-day keto meal plan PDF to your phone, tablet, or print it for the fridge. Includes all meals and macros — no login required.
⬇ Download Free PDF

The Science

Understanding Your Keto Macros

Success on keto depends on getting your three macronutrients right. Here's what each one does and how much you need.

🥩 Protein

Target: 20–25% of total calories (~70–100g/day)

Protein preserves your muscle mass during weight loss and keeps you satiated. On keto, you want enough — but not too much, as excess protein can convert to glucose.

  • Chicken, beef, pork, lamb
  • Salmon, tuna, hake, sardines
  • Eggs (a keto staple)
  • Full-fat Greek yoghurt, cheese

🥦 Net Carbs

Target: 20–50g net carbs per day

This is the number to watch. Focus on non-starchy vegetables — they provide fibre, vitamins, and minerals without spiking blood sugar.

  • Leafy greens (spinach, kale, rocket)
  • Broccoli, cauliflower, courgette
  • Asparagus, Brussels sprouts
  • Mushrooms, bell peppers

🥑 Healthy Fats

Target: 60–75% of total calories

Fat is your primary fuel on keto. Don't be afraid of it — choose quality sources and it will keep you full, energised, and in ketosis.

  • Avocado and avocado oil
  • Olive oil, coconut oil, butter
  • Fatty fish (salmon, mackerel)
  • Nuts and seeds (in moderation)
Net Carbs = Total Carbs − Fibre Example: Broccoli with 5g total carbs and 3g fibre = 2g net carbs

How many carbs per day on keto? Most people need 20–50g of net carbs per day to enter and maintain ketosis. Beginners should aim for the lower end — under 20g — to ensure a fast, clean transition into fat-burning mode.

Not sure what counts as a carb? Our comprehensive Keto Food List covers every food you can and can't eat, with net carb counts included.

Free Resource

Your Free 7-Day Keto Shopping List

Everything below covers the full 7-day meal plan above. Shop once, cook all week. All items are available at Pick n Pay, Woolworths, Checkers, or your local supermarket.

🇿🇦 Banting shoppers: Every item on this list is Banting Green List compatible. No surprises at the checkout.
🥩 Proteins
  • Free-range chicken thighs (skin-on) ×6
  • Chicken breast ×2
  • Salmon fillets ×2
  • Smoked salmon 200g
  • Beef mince 500g
  • Ribeye or rump steak ×1
  • Pork chops ×2
  • Streaky bacon 200g
  • Prawns 400g (fresh or frozen)
  • Canned tuna ×2 tins
  • Diced ham 150g
  • Free-range eggs ×12
🥑 Fats & Oils
  • Avocados ×4
  • Extra-virgin olive oil 500ml
  • Avocado oil 250ml
  • Butter 250g (unsalted)
  • Full-fat cream cheese 200g
  • Full-fat mayonnaise 1 jar
  • Walnuts 100g
  • Almonds 100g
  • Coconut oil 250ml (optional)
🥦 Vegetables
  • Baby spinach 400g bag
  • Mixed salad greens 2× bags
  • Rocket 1 bag
  • Broccoli ×2 heads
  • Cauliflower ×1 head
  • Brussels sprouts 400g
  • Asparagus 1 bunch
  • Courgette (zucchini) ×3
  • Cherry tomatoes 250g punnet
  • Button mushrooms 250g
  • Cucumber ×2
  • Green beans 300g
  • Strawberries (small punnet — moderate)
🧀 Dairy
  • Full-fat cottage cheese 250g
  • Full-fat Greek yoghurt 250g
  • Cheddar cheese 200g block
  • Feta cheese 200g
  • Parmesan 100g (grated)
  • Heavy cream 250ml
🫙 Pantry Staples
  • Kalamata olives 1 jar
  • Dijon mustard 1 jar
  • Apple cider vinegar
  • Himalayan salt or sea salt
  • Black pepper (whole or ground)
  • Garlic (fresh bulb)
  • Lemon ×2
  • Paprika, cumin, dried herbs
  • Bone broth (electrolytes — optional)
🖨️ Print / Save Shopping List

Common Challenge

What Is Keto Flu? (And How to Beat It)

Keto flu refers to a cluster of temporary symptoms — including fatigue, headaches, brain fog, and irritability — that some people experience in the first 3–7 days of starting keto, caused by electrolyte loss and rapid carbohydrate withdrawal.

The good news: keto flu is temporary and almost entirely preventable with the right approach. Most people who experience it have one thing in common — they didn't hydrate or replenish electrolytes when cutting carbs. Here's your 4-step plan to sail through the first week:

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Step 1

Hydrate Aggressively

Drink 2.5–3 litres of water daily. When you reduce carbs, your kidneys release stored water and sodium rapidly. Staying hydrated prevents the headaches and fatigue associated with keto flu.

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Step 2

Replenish Electrolytes

Add a pinch of Himalayan salt to your water, drink bone broth daily, and consider a magnesium supplement. Sodium, potassium, and magnesium are your three critical electrolytes on keto.

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Step 3

Rest and Be Patient

Your body is undergoing a major metabolic shift. Don't push hard exercise in the first 5–7 days. Light walks are perfect. Most symptoms resolve completely by the end of week one.

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Step 4

Eat Electrolyte-Rich Foods

Avocados (potassium), spinach (magnesium), salmon (sodium + B vitamins), and bone broth are your keto flu superfoods. They're all in your shopping list above.

Between Meals

Keto-Friendly Snacks to Keep You on Track

Hunger between meals is usually a sign you need more fat at your main meals — but when a snack is needed, these options won't knock you out of ketosis. All are Banting-compatible.

⚡ Quick Snacks (No Prep)

Hard-boiled eggs Keep 4–6 in the fridge. 6g protein, 0g carbs per egg. The ultimate keto fast food.
Cheddar cheese cubes Pre-cut a block at the start of the week. Pairs well with a few olives.
Olives (handful) High in healthy fats and satisfying. ~1g net carbs per 10 olives.
Sliced deli salami or biltong South African biltong is a perfect keto snack — check for added sugar in the seasoning.
Macadamia nuts (small handful) The most keto-friendly nut. High fat, low carb, incredibly satisfying.
Celery with cream cheese Crunchy, creamy, and roughly 2g net carbs per serving.

🍳 Make-Ahead Snacks

Egg muffins (batch-baked) Whisk eggs with cheese, spinach, and bacon — bake in a muffin tray. Store for 4 days.
Smoked salmon cream cheese rolls Lay salmon flat, spread with cream cheese, add cucumber, and roll. 3 minutes to make.
Keto fat bombs Blend cream cheese, butter, and vanilla — roll in crushed nuts and freeze. Sweet and keto-compliant.
Avocado halves with sea salt Half an avocado with flaked salt and a squeeze of lemon. Prep in 60 seconds.
Chicken lettuce cups Leftover shredded chicken in large lettuce leaves with mayo and spring onion.
Keto seed crackers with nut butter Bake a batch of sunflower and pumpkin seed crackers — they last a full week in an airtight container.

🍫 Craving something sweet? Check out our guilt-free keto dessert recipes — from cheesecake to choc chip cookies, all under 5g net carbs.

Common Questions

Keto Diet FAQ: Your Most Common Questions Answered

Click any question to expand the full answer.

Most people enter ketosis within 2–7 days of reducing carb intake to under 50g per day. The exact timeline depends on your current carb intake, metabolic rate, activity level, and body composition. If you're coming from a high-carb diet, your glycogen stores (carb reserves in the liver and muscles) need to be depleted first — this typically takes 1–3 days. You can speed up the process by exercising lightly to burn through glycogen faster, fasting for 12–16 hours, and keeping carbs very low (under 20g). Some people feel the effects of ketosis — reduced hunger, mental clarity, and slightly sweet-smelling breath — by day 3 or 4.
The standard keto recommendation is 20–50g of net carbs per day, with beginners typically targeting under 20g. Net carbs are calculated by subtracting fibre from total carbohydrates (Net Carbs = Total Carbs − Fibre). This is the number that matters — fibre doesn't raise blood sugar or inhibit ketosis. A strict therapeutic keto diet may go as low as 10–15g, while a moderate approach allows up to 50g. For most beginners in South Africa, aiming for 20g or fewer in the first two weeks ensures you enter ketosis confidently. After 4–6 weeks, some people can maintain ketosis at slightly higher carb levels.
Most fruits are too high in sugar for a strict keto diet, but small portions of berries are generally fine. Strawberries, raspberries, and blackberries are the most keto-friendly fruits, with roughly 5–7g net carbs per 100g serving. Blueberries are slightly higher. Tropical fruits like mango, banana, pineapple, and papaya are very high in sugar and should be avoided. Grapes and cherries are also off-limits on a strict plan. The fruit you'll find in this 7-day plan — a small amount of strawberries on Wednesday — is deliberately kept to a minimum and can be omitted if you're being very strict about getting into ketosis quickly.
Keto and Banting are very similar — both are LCHF (low-carb, high-fat) diets — but keto is stricter about carb limits and actively targets ketosis. Banting, as popularised by Professor Tim Noakes and the Real Meal Revolution in South Africa, is a broad LCHF framework. Keto is a more prescriptive version: it specifies a carb ceiling (typically under 50g net), a fat percentage (60–75% of calories), and aims to put the body into measurable ketosis. In practice, following a Banting green list while keeping carbs under 25g puts you firmly on a ketogenic diet. Many South Africans are already keto without knowing it — they're just calling it Banting.
For most healthy women over 40, the keto diet is safe and can be especially beneficial due to its effects on insulin sensitivity and hormone regulation. During perimenopause and menopause, oestrogen decline affects how the body manages blood sugar and stores fat — particularly around the abdomen. Keto's ability to lower insulin levels and reduce inflammation makes it a well-suited dietary strategy for this life stage. Several studies have shown improvements in weight, blood sugar control, and menopausal symptoms in women following LCHF diets. However, women with thyroid conditions, kidney disease, or cardiovascular conditions should consult a doctor or registered dietitian before starting. Always prioritise adequate protein to protect muscle mass as you age.
The best keto snacks are high in fat or protein, under 5g net carbs, and require minimal preparation. Top options include: hard-boiled eggs (zero carbs, 6g protein each), cheddar or brie cheese cubes, macadamia nuts (the lowest-carb nut), olives, avocado halves with sea salt, full-fat biltong (check for added sugar), smoked salmon with cream cheese, and celery with almond butter. For South Africans, biltong is a standout — it's practically purpose-made for keto, as long as you choose varieties without added sugar in the spice rub. Avoid "keto bars" and processed snack products that often have hidden carbs from sugar alcohols.
Some alcoholic drinks are low enough in carbs to be consumed occasionally on keto, but alcohol will slow fat-burning and should be limited. When you drink alcohol, your liver prioritises metabolising it over producing ketones — meaning fat-burning pauses. Dry wines (red or white) are the most keto-friendly at around 2–3g carbs per glass. Spirits like whisky, vodka, and gin are zero-carb, but be careful with mixers (tonic water and fruit juices are high in sugar). Beer and cider are generally too high in carbs. If you do drink socially, limit to 1–2 glasses of dry wine or a spirit with soda water and lemon. Avoid alcohol entirely in your first two weeks to ensure clean ketosis onset.
The keto diet is a high-fat, very low-carbohydrate eating plan that forces your body to burn fat for fuel instead of glucose, entering a metabolic state called ketosis. Typical macros on keto are approximately 70% fat, 20–25% protein, and 5–10% carbohydrates. By restricting carbs to under 50g per day, your body depletes its glycogen (glucose) stores and begins converting fat — both dietary and stored body fat — into ketone bodies, which become the primary fuel for your brain and muscles. This metabolic shift tends to promote rapid initial weight loss (from water and glycogen), followed by steady fat loss. It also tends to reduce hunger hormones, making it easier to eat in a calorie deficit without feeling deprived.
Signs of ketosis include reduced hunger, increased energy, a slightly sweet or metallic breath odour, and greater mental clarity — typically appearing 3–7 days into the diet. Common subjective signs include: noticeably reduced appetite (ketones suppress the hunger hormone ghrelin), dry mouth, initial increased urination, and the characteristic "keto breath" — a faintly fruity or acetone-like smell caused by acetone being exhaled. For objective measurement, urine ketone test strips are cheap, widely available at pharmacies, and accurate in the early weeks. Blood ketone meters are more accurate for longer-term tracking. A blood ketone reading of 0.5–3.0 mmol/L indicates nutritional ketosis.
Keto can be sustainable long-term for many people, but it requires building a varied recipe repertoire and occasionally adjusting carb intake based on your body's response. The biggest long-term challenge is dietary variety and social eating. The most successful long-term keto dieters focus on building a large collection of recipes they genuinely enjoy, learning to navigate restaurant menus, and embracing the lifestyle rather than treating it as a temporary fix. Some people adopt a cyclical keto approach — eating very low-carb 5–6 days per week and allowing slightly higher carbs on one day. This can improve adherence without significantly disrupting ketosis. The key insight from South Africa's Banting community is that LCHF becomes a natural, enjoyable way of eating — not a sacrifice — once you've been doing it for 2–3 months.

Ready to Start Your Keto Journey?

This 7-day plan is your starting point — but sustainable keto success comes from a plan built around your body, your goals, and your lifestyle. Whether you're just beginning or looking to break through a plateau, we've got your next step covered.

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