✦ Guide
Keto Diet Guide for Longevity
How to use ketosis, intermittent fasting 16:8, and keto-cycling to extend healthspan — tracked and optimized with 150AGE Smart Ring.
How to use ketosis, intermittent fasting 16:8, and keto-cycling to extend healthspan — tracked and optimized with 150AGE Smart Ring.
The ketogenic (keto) diet is a very low-carbohydrate, high-fat eating pattern that shifts your body's primary fuel source from glucose (sugar) to ketones (fat). This metabolic state is called ketosis.
When your body burns fat for fuel instead of carbs, you experience:
| Type | Description | Best For |
|---|---|---|
| Standard (SKD) | 70% fat, 20% protein, 10% carbs | Beginners, general health |
| Cyclical (CKD) | 5–6 days keto + 1–2 days high-carb | Athletes, active people |
| Targeted (TKD) | Carbs only around workouts | Gym-goers, strength training |
| High Protein | 60% fat, 35% protein, 5% carbs | Muscle preservation, older adults |
| ✅ Eat Freely | ⚠️ In Moderation | ❌ Avoid |
|---|---|---|
| Meat, poultry, fish | Nuts and seeds | Sugar, honey, syrup |
| Eggs (any style) | Berries (small amounts) | Bread, pasta, rice |
| Leafy greens, broccoli | Full-fat dairy | Potatoes, corn, beans |
| Avocados, olive oil | Dark chocolate (85%+) | Fruit juice, soda |
| Butter, ghee, coconut oil | Alcohol (dry wine) | Beer, sugary cocktails |
Intermittent fasting (IF) 16:8 means you eat all your meals within an 8-hour window and fast for the remaining 16 hours.
Example schedule:
Both keto and IF trigger autophagy — your body's cellular cleanup process that removes damaged proteins and old mitochondria. Combined, they accelerate fat adaptation and deepen ketosis faster than either alone. The 150AGE AI recommends starting with IF 16:8 before adding keto-cycling.
Keto-cycling means alternating between keto days and standard low-carb days (2 keto days per week). This approach:
Based on your personal data (HRV, sleep, temperature, activity), the 150AGE AI recommends:
The 150AGE Smart Ring monitors the key biometrics that matter during a ketogenic diet:
Ketosis lowers inflammation, which increases HRV. Higher HRV = better recovery, lower stress, and improved metabolic health. 150AGE tracks RMSSD, SDNN, pNN50, and LF/HF balance in real time.
Ketosis slightly elevates body temperature due to increased mitochondrial activity. Continuous temperature tracking helps confirm your body is adapting to fat-burning mode.
Keto improves deep sleep and reduces sleep latency (time to fall asleep). 150AGE tracks sleep stages (deep, REM, light), efficiency, and duration — so you can see how diet changes affect your rest.
Your Energy score (calculated from sleep + HRV + recovery) shows whether your fuel source is working. Low energy suggests you need more carbs or electrolytes; optimal energy means you're fat-adapted.
Daily weight tracking + BMI analysis + multi-day weight loss forecast. See exactly how keto accelerates fat loss vs water weight.
1. Ring collects biometrics (HRV, sleep, temp, HR, SpO₂) →
2. AI analyzes trends and detects metabolic state →
3. AI recommends: "Try keto-cycling 2 days this week" or "Increase protein to 1.4 g/kg" →
4. You follow the recommendation →
5. Ring measures the impact → back to step 2.
This closed-loop system is unique to 150AGE.
150AGE Smart Ring tracks every metric that matters for keto success. Know your biological age, HRV, sleep quality, and metabolic health in real time.
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