Keto Diet for Beginners: What to Eat and Avoid
The ketogenic diet puts your body into ketosis " — a metabolic state where it burns fat for fuel instead of carbohydrates. When done correctly, keto can produce rapid weight loss, improved energy, and better blood sugar control. Here's everything you need to know to start keto the right way.
How the Keto Diet Works
On a standard diet, your body uses glucose (from carbs) as its primary fuel source. When you drastically reduce carbs (below 50g per day), your body runs out of glucose and switches to burning stored fat for energy. This metabolic state is called ketosis. Your liver converts fat into ketones, which become your brain's primary fuel source.
What to Eat on Keto
| Food Category | Best Options | Serving Size |
|---|---|---|
| Fats | Butter, olive oil, coconut oil, avocado | Unlimited |
| Proteins | Beef, pork, chicken, fish, eggs | Palm-sized portions |
| Vegetables | Spinach, kale, broccoli, cauliflower, zucchini | 1-2 cups per meal |
| Dairy | Cheese, heavy cream, cream cheese | Moderate amounts |
| Nuts | Almonds, walnuts, macadamia, pecans | Small handful |
| Beverages | Water, black coffee, unsweetened tea | Unlimited |
What to Avoid on Keto
- Bread, pasta, rice, cereal " — High in carbs
- Sugar and sweets " — Candy, soda, juice, pastries
- Most fruits " — High in sugar (berries are the exception in small amounts)
- Starchy vegetables " — Potatoes, corn, peas, carrots
- Beer and sweet cocktails " — Very high in carbs
- Processed low-fat foods " — Usually high in sugar
Sample 7-Day Keto Meal Plan
| Day | Breakfast | Lunch | Dinner |
|---|---|---|---|
| Monday | Scrambled eggs with cheese and avocado | Grilled chicken Caesar salad (no croutons) | Salmon with butter and roasted broccoli |
| Tuesday | Bacon and eggs | Turkey lettuce wraps with cream cheese | Steak with cauliflower mash |
| Wednesday | Keto smoothie (protein, MCT oil, spinach) | Tuna salad over mixed greens | Pork chops with green beans |
| Thursday | Omelet with mushrooms and cheese | Chicken avocado bowl | Burgers (no bun) with cheese and bacon |
| Friday | Greek yogurt with nuts and seeds | Shrimp salad with olive oil dressing | Chicken thighs with roasted Brussels sprouts |
| Saturday | Keto pancakes with butter | Cobb salad | Lamb chops with asparagus |
| Sunday | Egg muffins with spinach and feta | Lettuce wrap tacos | Roasted chicken with green salad |
How Much Weight Can You Lose?
Most people lose 5-10 pounds in the first week on keto (mostly water weight). After that, sustainable fat loss averages 1-2 pounds per week " — similar to other diets. Keto's advantage is that many people find it easier to maintain because fat and protein are more satiating than carbohydrates.
- People with diabetes (especially Type 1)
- People with kidney disease
- Pregnant or breastfeeding women
- People with a history of eating disorders
- Those taking medications for blood pressure or blood sugar