Getting Started with Keto and Low Carb — First 2 Weeks

Before you change anything

If you take diabetes, blood-pressure, or diuretic medication, talk with your clinician before starting a low-carb diet or fasting. Carbohydrate reduction can change glucose and blood pressure quickly. This guide is educational — not a prescription.

Decide what change is realistic before day one. “Keto” and “low carb” are defined differently across studies and programs; no fixed gram target is appropriate for everyone.

Week 1: remove the obvious carbs

Week one is subtraction, not perfection. Clear the pantry of the foods that trigger automatic eating. Replace them with eggs, meat, leafy greens, olive oil, butter, cheese (if tolerated), and plain yogurt you have label-checked.

• Stop soda, juice, candy, and white bread
• Read labels — use our net carb calculator on packaged foods
• Eat protein + non-starchy vegetables at each meal
• Drink normally; do not assume lightheadedness is caused by salt loss
• Cook from the breakfast and dinner hubs so you are not improvising hungry

Week 2: set a daily net carb target

Calculators provide estimates, not personalized prescriptions. Use our keto macro calculator only as an educational planning aid.

Appetite may increase or decrease after a diet change. Skipping breakfast is optional and should not be treated as proof of metabolic improvement.

Headache, fatigue, and cramps are nonspecific. Read keto flu and electrolytes for safety limits and seek care for severe or persistent symptoms.

Week-one starter plan

If you have insulin resistance or PCOS, also read net carbs for IR and PCOS and low carb. Avoid copying prolonged fasting plans from social media.

• Day 1–3: remove sugar, bread, rice, pasta, soda
• Stock proteins, leafy greens, eggs, avocados, olive oil
• Calculate macros — keto macro calculator
• Track net carbs — net carb calculator
• Cook from strict keto recipes so dinner is decided
• Read Atkins phases if using a phased approach