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Keto Ingredients: Fats, Proteins, and Foods to Avoid
Blog June 8, 2026

Keto Ingredients: Fats, Proteins, and Foods to Avoid

Dr. Yeonseung Choe
Dr. Yeonseung Choe
Chief Director

In our weight management consultations, we often hear 'I want to try keto but don't know what to buy.' Many people feel overwhelmed when trying to fill their shopping carts with the right ingredients.

What Exactly is Ketogenic?

Ketogenic combines 'ketone' and 'genic,' meaning a dietary approach that changes your body to produce more ketones. Our bodies typically use glucose as their primary energy source, but when you significantly reduce carbohydrates, they start burning fat instead, producing energy molecules called ketones. This state is called ketosis.

Originally developed as a medical diet for treating neurological conditions like pediatric epilepsy that don't respond well to medication, it gained popularity for weight management and blood sugar control. Many people ask, 'Isn't this just low-carb, high-fat (LCHF)?' While LCHF allows up to 120g of carbohydrates, ketogenic strictly limits carbs to under 50g to trigger significant ketone production.

Circular chart visualizing ketogenic diet macronutrient ratios: blue (fat) dominates at 70-75%, followed by orange (protein 20%) and red (carbs 5%)

What's the Ideal Nutrient Ratio?

Ratios vary slightly across sources, but the commonly suggested breakdown is 70-75% fat, 20% protein, and 5% carbs. Some sources suggest a broader range of 60-80% fat, 15-20% protein, and 5-10% carbs. The key is keeping daily carbohydrates under 20-50g, which aligns with the recommended net carb intake in practice.

Beginners often struggle with memorizing ratios. Just remember: mostly fat, moderate protein, very few carbs. Nutrition experts note that limiting carbs to around 20g for several days helps transition your metabolism to burn fat and ketones instead of glucose.

2×2 matrix comparing four ketogenic food categories with color coding: protein=red, fat=yellow, vegetables=green, fruits=pink

Must-Have Ingredients

Ketogenic ingredients generally fall into four categories:

  • Protein sources: Eggs, salmon, mackerel, pork belly, ribeye, short ribs, chicken thighs, seafood, organ meats
  • Fat sources: Butter, cheese, olive oil, avocado oil, coconut oil, MCT oil, lard, ghee, perilla oil, nuts
  • Vegetables: Spinach, kale, romaine, arugula, broccoli, cauliflower, asparagus, cabbage, bok choy, cucumber, perilla leaves, zucchini, seaweed
  • Fruits & others: Low-sugar options like avocado, strawberries, raspberries, blueberries, lemon, lime

For those who frequently consume bread and flour, try these substitutes: almond or coconut flour instead of wheat flour, and erythritol or allulose instead of sugar. These make following keto bread and dessert recipes much easier.

Split layout: ❌ section shows foods to avoid (rice, bread, noodles, potatoes, sweet potatoes, sugar) on dark background with prohibition symbols. ✅ section shows recommended foods.

Ingredients to Avoid

To avoid confusion, remember these foods to eliminate: rice, bread, noodles, potatoes, sweet potatoes, corn, buckwheat, acorns, sugar, high-fructose corn syrup, and flour—all high in carbohydrates. Many ask, 'But aren't sweet potatoes healthy carbs?' However, the quantity makes them challenging for achieving ketosis. Remember the 50g daily limit.

Warm consultation room at Baekrokdam Korean Medicine Clinic. Experienced practitioners engage in sincere consultation with patients. Background shows herbal medicines and constitution analysis materials, conveying trust and professionalism.

Baekrokdam's Perspective on Keto

In our practice, we observe varied responses to the same ketogenic diet. Korean medicine recognizes that each person has a unique constitution, digestive capacity, and metabolic state. Those with weak digestion may experience bloating or diarrhea when suddenly consuming high-fat foods, while others with poor appetite control often find their cravings naturally decrease during ketosis adaptation.

We neither discourage nor universally recommend keto. However, we advise checking your constitution first and slowing down if you experience severe dizziness or headaches during adaptation. Since keto originated as a medical diet, those with diabetes, kidney, or liver conditions must consult a specialist first.

Five-step sequence: 1. Replace one meal with protein/vegetables (rice bowl with X). 2. Switch to olive oil/ghee. 3. Snack on nuts/cheese. 4. Choose water/black coffee/unsweetened tea. 5. Add minerals if dizzy.

Actionable Steps You Can Take Today

Start small:

  • Replace one meal of rice/noodles/bread with protein and vegetables
  • Switch to olive oil/ghee and reduce margarine/vegetable oil
  • Snack on nuts, cheese, or berries
  • Choose water, black coffee, or unsweetened tea over sweetened drinks
  • If dizzy during adaptation, ensure adequate mineral intake (seaweed, salt)

The first 1-2 weeks are an adaptation period as your body shifts to ketone metabolism. Rather than focusing on rapid weight loss, prioritize making the diet sustainable in your daily life.

Conclusion

Ketogenic ingredients are surprisingly simple: quality fats, moderate protein, and leafy greens. However, success depends on balancing ratios with your constitution and lifestyle. If you find the diet challenging or experience adaptation difficulties, consider combining it with Baekrok Gambi-jung and personalized Korean medicine weight management consultation. Visit us at Baekrokdam Korean Medicine Clinic for expert guidance.

References

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Dr. Yeonseung Choe

Dr. Yeonseung Choe Chief Director

I have met many patients who came after visiting multiple medical institutions and departments for persistent or recurrent conditions. Symptoms normally handled by different specialties—such as abdominal pain, headaches, palpitations, dizziness, and insomnia—may overlap in one person. Sometimes there is no clear improvement despite taking medication for each symptom, and being unwell gradually becomes part of daily life. In these cases, I look beyond individual diagnoses and examine how the symptoms connect and change together. Asking only about the most uncomfortable symptom today does not reveal the full course. I look at when the body first began to change and what happened after illness, surgery, childbirth, or starting and stopping medication. I also review changes in weight, diet, and sleep, then trace which symptoms improved with previous treatment and which remained. Test results, diagnoses, and the course of previous treatment are important for understanding the current condition. Clinical research in modern Korean medicine, physiological and pathological research in modern medicine, and observations recorded in classical Korean medicine texts offer different perspectives on the same body. Rather than fitting a patient into one perspective, I consider what each can and cannot explain and look for clues that connect symptoms and treatment histories that were previously considered separately.

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