Understanding Ketosis

Ketosis is your body’s natural fat-burning state — producing ketones as a clean, steady fuel source. In the right person, it can improve metabolic health, reduce cravings, and stabilize energy.

Natural Metabolic State
Fat → Ketones → Energy
FitZone Education
20–50g
Typical keto carb range
2–7
Days to make ketones
If you have diabetes or take glucose-lowering meds, your plan should be medically supervised.

What Is Ketosis?

Ketosis is a natural state where your body uses fat for fuel instead of sugar (glucose).

Sugar-Burning Mode

High-carb diets keep blood sugar and insulin high. Over time, that can increase hunger, energy crashes, fat storage, and insulin resistance.

Fat-Burning Mode (Ketosis)

When carbs are low, insulin drops and the liver makes ketones. Ketones can fuel the brain and body, often producing steadier energy without sugar spikes.

The Key Idea

You can shift from “sugar burning” to “fat burning” by reducing carbohydrates and eating enough protein and healthy fats.

  • Lower cravings
  • More stable energy
  • Improved metabolic markers

Why Ketosis Is Recommended

Common benefits when ketosis is done correctly.

Weight Loss Support

  • Burn stored body fat for fuel
  • Lower insulin (a fat-storage hormone)
  • Often reduces appetite naturally

Improved Metabolic Health

  • Lower triglycerides and blood sugar
  • Often raises HDL (“good cholesterol”)
  • May reduce blood pressure

Mental Clarity & Energy

  • Ketones provide steady brain fuel
  • Fewer energy crashes
  • May improve focus

Insulin Resistance Support

  • Gives insulin pathways a break
  • Can improve insulin sensitivity
  • May reduce inflammation

How to Get Into Ketosis

A simple, medically-safe overview of the process.

Important Medical Note

Always consult your healthcare provider before major diet changes — especially if you have diabetes, kidney disease, or take blood sugar or blood pressure medications.

1

Reduce Carbs

  • Typically 20–50g net carbs/day
  • Avoid sugar, bread, pasta, rice
  • Choose non-starchy vegetables
2

Add Healthy Fats

  • Fats become primary energy
  • Avocado, olive oil, butter, ghee
  • Tallow/lard if preferred
3

Moderate Protein

  • Not too low, not too high
  • Meat, fish, eggs, poultry
  • Adjust to goals and labs

Timeline to Ketosis

  • 24–48 hours: glycogen stores used up
  • 2–7 days: ketone production ramps up
  • 1–4 weeks: “keto-adapted” (more efficient ketone use)

Sample Ketosis-Friendly Day

Simple examples that keep carbs low and protein adequate.

Breakfast

  • 2–3 eggs cooked in butter
  • Bacon/sausage (optional)
  • Coffee + heavy cream (optional)

Lunch

  • Chicken, fish, or burger patties
  • Salad + olive oil
  • Avocado (if desired)

Dinner

  • Steak, salmon, or roast
  • Broccoli/asparagus (if included)
  • Add butter or cheese

Key Principles

  • Focus on whole foods: meat, fish, eggs, low-carb vegetables
  • Watch hidden carbs in sauces and packaged foods
  • Hydrate and replace electrolytes (salt, magnesium)
  • Eat when hungry, stop when full

Want a Personalized Ketosis Plan?

FitZone can help you choose the right low-carb approach and monitor your metabolic markers safely.

FitZone Medical Clinic • 2064 Park St., Riverside, Jacksonville, FL 32204