Standard Ketogenic Diet - Metabolic Made Easy
Understanding the Standard Ketogenic Diet (SKD)

Understanding the Standard Ketogenic Diet (SKD)

What SKD is

The Standard Ketogenic Diet is a very-low-carbohydrate, high-fat, moderate-protein pattern designed to sustain nutritional ketosis (blood β-hydroxybutyrate typically ~0.5–3.0 mmol/L). It differs from the classical therapeutic keto used in epilepsy (often a 4:1 fat:(protein+carb) ratio) but keeps carbs very low to promote fat-derived ketone production.

Who might consider SKD (and who should not)

May benefit:

  • Adults seeking weight loss or improved glycemic control/insulin resistance (T2D/metabolic syndrome) when supervised. Sustained 2-year data show improved HbA1c, weight, triglycerides, HDL, and reduced diabetes meds in a keto-supported program.
  • People needing steady energy/appetite control; some report improved mental clarity.
  • Patients using diet therapy for epilepsy (typically medical keto variants; supervision required).

Avoid or use only with specialist oversight:

Absolute/relative contraindications include pancreatitis, liver failure, disorders of fat metabolism (e.g., primary carnitine deficiency), porphyria, and other inborn errors of metabolism; pregnancy/breastfeeding and significant renal disease warrant individualized medical review.

Potential benefits (evidence snapshot)

  • Weight & appetite: Low-carb/keto can reduce appetite and support fat loss in the short to intermediate term.
  • Glycemic control in T2D: Multi-year non-randomized programs with remote care show sustained HbA1c and medication reductions up to 2 years (and beyond in follow-ups).
  • Epilepsy: Established therapy; classical keto and related variants reduce seizures in a substantial subset; duration and weaning are individualized.

Risks & what to monitor

  • Early “keto flu” (fatigue, headache): usually during week 1; hydration and electrolytes (sodium, potassium, magnesium) help. Constipation is common—use low-carb, high-fiber vegetables. Kidney stones occur in a minority (citrate and hydration can reduce risk).
  • Lipids: Triglycerides typically fall and HDL rises; LDL-C can increase in some individuals, with notable rises reported in subsets (“lean-mass hyper-responders”). Monitor ApoB/LDL-C and adjust fat quality (favor unsaturated fats) if needed.
  • Micronutrients: Potential gaps in folate, thiamin, electrolytes, fiber—plan produce and supplementation accordingly.

Suggested labs & follow-up

Baseline and periodic: fasting lipids (including ApoB if available), CMP, A1c/glucose, eGFR, and clinical review every 3–6 months when used therapeutically.

SKD macro ratios & daily carb targets

  • Fat: ~70–80% of energy
  • Protein: ~15–25% (≈1.2–1.7 g/kg reference body weight; individualized to LBM & goals)
  • Carbohydrate: ~5–10% (often 20–50 g net carbs/day)

Net carbs = total carbs − fiber.

How long to follow SKD?

  • Adaptation: Evaluate tolerance after 2–4 weeks as ketone production and electrolyte balance stabilize.
  • Active phase: 8–12+ weeks for weight/metabolic goals; reassess quarterly.
  • Longer-term: Multi-year outcomes exist under medical supervision, but periodic re-evaluation is prudent; epilepsy programs often consider weaning after ~2 years of good seizure control.

7-Day SKD meal ideas (adjust portions to your calories/macros)

Day Breakfast Lunch Dinner
1 Scrambled eggs, avocado, bacon Grilled chicken salad + olive oil, olives, feta Baked salmon, broccoli, butter
2 Greek omelet (eggs, spinach, feta) Tuna salad (mayo, celery) in lettuce cups Ribeye, asparagus, herb butter
3 Chia pudding (unsweetened almond milk), walnuts Turkey thigh, arugula salad, avocado oil Chicken thighs, cauliflower mash
4 Cottage cheese* with pecans, cinnamon (*full-fat) Shrimp salad with olive oil lemon Pork chops, zucchini sauté in olive oil
5 “Bulletproof” coffee + 2 hard-boiled eggs Cobb salad (chicken, egg, bacon, blue cheese, olive oil) Ground beef & spinach skillet
6 Egg muffins (egg/cheddar/sausage) Salmon salad (mayo, celery, dill) Lamb chops, kale sauté
7 Smoked salmon roll-ups (cream cheese, cucumber) Charcuterie plate (cheese, olives, nuts; veg crudités) Grilled white fish, green beans, butter

Keep non-starchy veg daily for fiber/electrolytes. Add olive oil/avocado/nuts to “top up” fat.

One-day sample plan with per-item macros (~2,000 kcal target)

Breakfast – Scrambled eggs + avocado + bacon

  • 3 eggs scrambled + 1 tsp butter: 250 kcal, 21 g fat, 19 g protein, 1 g net carb
  • ½ avocado (medium): 120 kcal, 11 g fat, 1.5 g protein, 3 g net carb
  • 2 bacon slices: 80 kcal, 7 g fat, 5 g protein, 0 g net carb

Meal total: ~450 kcal | 39 g fat, 25 g protein, 4 g net carb

Lunch – Grilled chicken salad (olive oil, feta, olives)

  • Chicken thigh ~5 oz cooked: 330 kcal, 22 g fat, 30 g protein, 0 g net carb
  • Greens/veg: 30 kcal, 0 g fat, 2 g protein, 3 g net carb
  • Olive oil 2 Tbsp: 240 kcal, 28 g fat
  • Feta 1 oz + olives (~6): 100 kcal, 9 g fat, 4 g protein, 2 g net carb

Meal total: ~700 kcal | 59 g fat, 36 g protein, 5 g net carb

Dinner – Baked salmon, broccoli, butter

  • Salmon 6 oz: 370 kcal, 22 g fat, 39 g protein, 0 g net carb
  • Broccoli 1 cup + 1 Tbsp butter: 160 kcal, 14 g fat, 4 g protein, 4 g net carb

Meal total: ~530 kcal | 36 g fat, 43 g protein, 4 g net carb

Snack – Macadamia nuts (1 oz)

~200 kcal, 21 g fat, 2 g protein, 2 g net carb

Daily total (approx.): 1,880–2,000 kcal | 155–165 g fat (70–79%), 100–106 g protein (19–22%), 15–20 g net carbs (3–5%) — within SKD ranges.

Practical tips

  • Electrolytes: Proactively include sodium (e.g., broth/salt to taste), potassium (avocado/leafy greens), and magnesium (nuts/greens) to reduce “keto flu.”
  • Fat quality: Favor olive oil, avocado, nuts, fatty fish; moderate saturated fat if LDL-C rises.
  • Protein: Keep moderate; adjust to body size and goals (don’t fear adequate protein—keto isn’t high-protein).
  • Medication: If on glucose-lowering agents or insulin, coordinate with your clinician to avoid hypoglycemia.

Resources & Further Reading

Recommended books (Amazon)

Book Description, Rating, Approx. Price Link
The Art and Science of Low Carbohydrate Living
Jeff S. Volek & Stephen D. Phinney
The Art and Science of Low Carbohydrate Living cover
Foundational science-forward guide to carbohydrate restriction and clinical use.
Rating: ≈4.6/5 • Price: ≈$20–$30 (paperback).
End Your Carb Confusion
Eric Westman & Amy Berger
End Your Carb Confusion cover
Practical, stepwise approach to choosing and sustaining low-carb levels.
Rating: ≈4.7/5 • Price: ≈$15–$25 (paperback).
The Ketogenic Bible
Jacob Wilson & Ryan Lowery
The Ketogenic Bible cover
Broad overview of keto science, applications, and recipes for everyday use.
Rating: ≈4.6/5 • Price: ≈$20–$30 (paperback).
Ketogenic Diet Therapies for Epilepsy and Other Conditions
Eric H. Kossoff et al.
Ketogenic Diet Therapies for Epilepsy and Other Conditions cover
Clinical reference focused on therapeutic keto in neurological care; best with clinician guidance.
Rating: ≈4.8/5 • Price: ≈$40–$70 (paperback/hardcover).

Additional resources