GO-3.0/tools/qortino-knowledge/docs/health/keto-fasting.md

Healthy Keto and Intermittent Fasting (Dr. Berg-style themes)

Summarizing themes popularized by Dr. Eric Berg DC (drberg.com). Educational only, not medical advice — especially important for anyone with diabetes, on blood-sugar or blood-pressure medication, pregnant or breastfeeding, or with a history of disordered eating: fasting and ketogenic diets require professional guidance in those cases.

The insulin model

The central idea: chronically elevated insulin — driven by frequent eating and refined carbohydrates — locks the body in fat-storage mode and underlies insulin resistance, stubborn weight, energy crashes, and cravings. Lowering insulin through carbohydrate reduction and longer gaps between meals lets the body switch to burning fat and ketones.

"Healthy keto"

Not just low-carb, but nutrient-dense low-carb: large amounts of non-starchy vegetables (with emphasis on greens and cruciferous vegetables), adequate protein from quality sources, healthy fats, and avoidance of ultra-processed "keto junk". Typical shape: roughly 20-50 g net carbs per day, moderate protein, fat to satiety.

Intermittent fasting

Usually combined with keto. Common progression: start by cutting snacks (3 meals, nothing between), move to 16:8 (16-hour fast, 8-hour eating window), then 18:6 or one-meal-a-day (OMAD) if it suits the person. Eat until satisfied within the window — fasting is about meal frequency, not chronic under-eating.

Keto flu and electrolytes

When switching to keto, insulin drops and the kidneys excrete sodium and water, which can cause fatigue, headaches, cramps, and "keto flu". The standard remedy in this community: more sodium, potassium, and magnesium, B vitamins (especially B1), and adequate water. Muscle twitching early in keto usually points to electrolytes.

Blood sugar and energy

Afternoon energy crashes, waking up hungry, and constant cravings are treated as signs of blood-sugar swings and insulin resistance rather than character flaws. The fix offered: fewer eating occasions, protein and fat at meals, removal of refined sugar and starch, and patience through a short adaptation period (sugar withdrawal is real and passes within days to weeks).

Cautions

Ketogenic diets and fasting are genuinely powerful metabolic interventions — which is exactly why medicated diabetics can be driven hypoglycemic and why medical supervision matters. Long fasts (beyond about 24 hours) are an advanced practice, not a starting point.

What to eat, concretely

The plate pattern taught in this approach: 2-4 large handfuls of non-starchy vegetables (leafy greens, cruciferous — broccoli, cauliflower, cabbage, Brussels sprouts — zucchini, peppers, asparagus, mushrooms), a palm-to-two of protein (eggs, fatty fish, beef, lamb, poultry with skin, organ meats, full-fat dairy if tolerated), and fat to satiety (butter/ghee, olive oil, avocado, nuts and seeds in moderation, fatty cuts). Condiment staples: apple cider vinegar (widely used before meals for blood-sugar response), lemon, herbs, mustard, fermented vegetables like sauerkraut for gut support. Avoid: sugar in all forms, flour and refined starch, sweet drinks including juice, industrial seed oils, and "keto" ultra-processed products that recreate junk food with sweeteners.

Common deficiency signals discussed in this community

(Educational patterns to research further, not diagnoses.) Muscle cramps and twitching → magnesium/potassium; fatigue and carb cravings early on → salt and B1; nighttime leg cramps → electrolytes broadly; hair/skin/nail issues → protein adequacy and trace minerals; poor fat digestion (nausea after fatty meals, floating stools) → discussed as gallbladder/bile support territory — smaller fat loads, ox-bile supplements in this community's practice, and medical evaluation if persistent. Potassium is the hardest target: the reference intake (~3,500-4,700 mg/day) is nearly impossible without deliberate vegetable volume — hence the huge salads.

Adaptation timeline

Typical pattern taught: days 1-3 water and sodium flush (weight drops fast, much is water; add salt), days 3-10 possible keto flu (electrolytes fix most of it), weeks 2-6 fat adaptation builds — steadier energy, longer comfortable fasts, reduced cravings. Exercise performance often dips before recovering. Breaking longer fasts: start small and gentle (broth, eggs, cooked vegetables), not a feast — the "overeating rebound" after fasting is predictable and manageable with a planned first meal and protein first.

Fasting ladder taught in this approach

Cut snacking → 3 meals no snacks → 16:8 → 18:6 → OMAD (one meal a day), holding each stage until comfortable, hunger being expected to come in short waves that pass. Coffee, tea, and water don't break the fast in this framework; anything with calories does; bone broth is treated as a "dirty-fast" tool for easing into longer fasts rather than strict fasting. Longer than 24-48 h: this community itself advises medical supervision, refeeding care, and electrolytes throughout. Who should not fast at all without professional guidance: type 1 diabetics, anyone on glucose-lowering or blood-pressure medication (doses may need adjustment as markers change — work with the prescriber), pregnant and breastfeeding women, children, underweight individuals, and anyone with an eating-disorder history.

Sleep, stress, and cortisol

This approach treats stubborn weight and blood-sugar issues as partly stress problems: poor sleep and chronic stress raise cortisol, which raises blood sugar and appetite independently of food. The prescription mirrors the foundations chapter — sleep priority, daily walking, sunlight, and stress practices — because insulin and cortisol are treated as the two dials that matter.