Keto Diet for Beginners: What to Eat, What to Avoid, and What to Expect

The ketogenic diet has helped many people lose weight and improve health markers.But it's not for everyone, and it requires understanding before starting.

What Is Keto?

A very low-carbohydrate, high-fat diet that shifts your body from burning glucose to burning fat (and ketones) for fuel. Typically: 70-80% fat, 15-20% protein, 5-10% carbohydrates.

Foods to Eat

Fats and Oils

• Olive oil, coconut oil, avocado oil
• Butter and ghee
• Lard and tallow
• MCT oil

Proteins

• Fatty cuts of meat (ribeye, pork belly, chicken thighs)
• Fatty fish (salmon, mackerel, sardines)
• Eggs (whole, not just whites)
• Full-fat dairy

Vegetables (Low-Carb)

• Leafy greens (spinach, kale, lettuce)
• Broccoli and cauliflower
• Courgette and cucumber
• Asparagus and green beans
• Peppers and mushrooms

Other

• Nuts and seeds (in moderation)
• Avocados
• Berries (small portions)
• Dark chocolate (85%+, sparingly)

Foods to Avoid

• All grains (bread, pasta, rice, oats)
• Sugar and sweetened foods
• Most fruits (too high in sugar)
• Starchy vegetables (potatoes, carrots, parsnips)
• Beans and legumes
• Low-fat products (usually high in sugar)
• Beer and sweet alcohol

What to Expect

First Week: "Keto Flu"

Many people experience fatigue, headaches, and irritability as the body adapts. Stay hydrated, increase salt intake, and push through—it passes.

Weeks 2-4: Adaptation

Energy returns, often exceeding baseline. Hunger decreases. Weight loss may be significant (much is water initially).

Month 2+: Ketosis

Full fat-adaptation. Sustained energy, mental clarity, reduced hunger. This is where benefits typically appear.

Sample Day

• Breakfast: Eggs fried in butter with avocado
• Lunch: Chicken thigh salad with olive oil dressing
• Dinner: Salmon with broccoli in butter
• Snack: Handful of macadamia nuts

Common Mistakes

• Not eating enough fat (feeling hungry and tired)
• Too much protein (can kick you out of ketosis)
• Hidden carbs in sauces and dressings
• Not enough vegetables (fibre matters)
• Insufficient electrolytes (salt, potassium, magnesium)

Who Should Avoid Keto

• People with kidney disease
• Those with certain metabolic conditions
• Pregnant or breastfeeding women (without medical supervision)
• Anyone with history of eating disorders
• Athletes requiring high carbohydrate performance

The Realistic View

Keto works well for many people but isn't magic. Weight loss still requires caloric deficit. Some find it unsustainable long-term. It's a tool, not a religion.

Following a keto diet? Fridgr can filter recipes by dietary requirements and suggest low-carb meals.