The Keto Diet: What You Need to Know


The ketogenic diet, commonly known as “keto,” has taken the nutrition world by storm. Promising rapid fat loss, mental clarity, and even potential health benefits for certain conditions, it’s easy to see why the diet has gained popularity. But is the keto diet the right approach for you? Understanding how it works, its benefits, and its drawbacks will help you make an informed decision.


What is the Keto Diet?

The ketogenic diet is a high-fat, low-carbohydrate diet that encourages the body to enter a metabolic state known as ketosis. Normally, your body uses carbohydrates as its primary fuel source, breaking them down into glucose. However, when carbs are restricted to a very low amount (usually 5-10% of your daily intake), the body shifts to using fat as its primary energy source. The liver then converts fats into molecules called ketones, which your body can use for energy in place of glucose.

A standard keto macronutrient ratio typically looks like:

  • 70-80% fat
  • 10-20% protein
  • 5-10% carbohydrates

The idea is to shift your body from a sugar-burning state to a fat-burning state, which can promote fat loss and potentially lead to other benefits.


How the Keto Diet Works in Theory

The premise of keto is to maintain a state of ketosis, where the body relies on ketones produced from dietary fats and stored fat as its main energy source. By keeping carbs extremely low, your body quickly depletes its glycogen stores and increases fat breakdown.

Ketosis and Fat Loss:
When your body is in ketosis, it burns stored fat for energy, leading to fat loss. This is one reason why people see quick results in terms of weight loss on the keto diet. Additionally, the high fat and protein content helps increase satiety, which can lead to reduced calorie intake.


Benefits of the Keto Diet

1. Quick Weight Loss
The keto diet can lead to rapid initial weight loss due to reduced water weight (as glycogen holds water) and fat loss from being in a calorie deficit. This quick progress often motivates people to stick with the diet.

2. Appetite Control
High fat and moderate protein are very satiating, which can lead to reduced hunger and better control over food intake. This makes it easier to maintain a calorie deficit without feeling deprived.

3. Potential Health Benefits for Specific Conditions
The keto diet has been sometimes shown beneficial for certain medical conditions. It was originally developed as a treatment for epilepsy and has been effective in reducing seizures. Emerging research suggests it may also help with metabolic conditions like type 2 diabetes, obesity, and some neurological disorders.


Drawbacks of the Keto Diet

1. Difficult to Sustain Long-Term
One of the most significant challenges of the keto diet is adherence. Eliminating or severely restricting carbohydrates means cutting out many fruits, whole grains, legumes, and starchy vegetables. This restrictive nature makes it difficult for many people to follow the diet long-term.

2. Potential for Nutrient Deficiencies
By cutting out carb sources, you also eliminate many nutrient-dense foods like fruits, vegetables, and whole grains, which can lead to deficiencies in fiber, vitamins (like vitamin C and some B vitamins), and minerals (like potassium and magnesium). Supplementation and careful planning are often necessary.

3. “Keto Flu”
When starting the keto diet, many individuals experience what’s known as the “keto flu,” which includes symptoms like fatigue, headaches, irritability, nausea, and dizziness. These symptoms are typically due to a rapid loss of water, electrolytes, and the body’s adjustment to burning fat instead of carbs. Ensuring proper hydration and electrolyte balance is crucial during this transition.

4. Limited Food Choices and Social Challenges
The keto diet restricts many common foods, which can make dining out, social gatherings, and family meals challenging. Staying compliant with the diet in these situations can require meticulous planning and preparation, making it more difficult to maintain.

5. Possible Negative Effects on Performance for Athletes
For those involved in high-intensity training or endurance sports, keto may not be the best choice. Glycogen (from carbohydrates) is the body’s preferred fuel for high-intensity exercise, and performance may suffer without adequate carb intake.


Best Practices for Following the Keto Diet

If you decide to give keto a try, here are some best practices to help you get started:

1. Eat Whole, Nutrient-Dense Foods
Focus on healthy fats like avocados, nuts, seeds, olive oil, and fatty fish. Include plenty of leafy greens, non-starchy vegetables (like broccoli, cauliflower, and zucchini), and moderate protein sources like poultry, beef, and eggs.

2. Plan for Electrolytes and Hydration
To avoid the “keto flu,” make sure you are staying hydrated and replenishing lost electrolytes. Consuming bone broth, adding a pinch of salt to your meals, or using electrolyte supplements can help.

3. Monitor Your Macronutrients
It’s easy to overeat fats or consume too much protein on a keto diet, which can kick you out of ketosis. Use a food diary or app to track your macronutrient intake to ensure you’re staying within the right ranges for carbs, protein, and fat.

4. Consider Cyclical or Targeted Keto
If staying in ketosis all the time is too challenging or negatively impacts your performance, consider variations of the diet like cyclical keto (where you include higher-carb days on a weekly basis) or targeted keto (where you eat carbs around your workouts).


Is the Keto Diet Right for You?

The keto diet can be an effective tool for fat loss and has potential benefits for certain medical conditions. However, it’s not for most. There are many diets out there that are more effective and less detrimental to long term success and health. If you enjoy carbs, have performance goals that require glycogen (such as endurance sports or intense lifting), or struggle with restrictive eating patterns, it may not be the best fit for your lifestyle.

As with any diet, the key to success is sustainability. Choose an eating style that aligns with your personal preferences, lifestyle, and goals. Before making any significant dietary changes, consult with a healthcare professional or registered dietitian to ensure it’s appropriate for your needs.


Closing Thoughts
The keto diet has gained popularity for its rapid fat loss potential and unique approach to nutrition. While it can be effective, it’s essential to understand its benefits and drawbacks and determine if it’s sustainable for your lifestyle. Remember that a successful diet is one that you can maintain long-term, supports your health, and helps you reach your goals in a balanced way.


If you’re curious about trying keto or need help finding the right nutrition plan for your goals, reach out to our team! We can provide personalized guidance to help you succeed on your fitness journey.

References:

Renaissance Diet 2.0. Mike Israetel, PhD; Melissa Davis, PhD; Jen Case, PhD; James Hoffmann, PhD. Renaissance Periodization, 2020. PDF.

CNC Textbook. National Academy of Sports Medicine, 2021. PDF.

Volek, Jeff S., and Stephen D. Phinney. The Art and Science of Low Carbohydrate Living. Beyond Obesity LLC, 2011.

Paoli, A., Rubini, A., Volek, J. S., & Grimaldi, K. A. “Beyond weight loss: a review of the therapeutic uses of very-low-carbohydrate (ketogenic) diets.” European Journal of Clinical Nutrition, 67(8), 789-796. 2013.Westman, Eric C., et al. A Low-Carbohydrate, Ketogenic Diet to Treat Type 2 Diabetes. Nutrition & Metabolism, 2008.