When it comes to calculating your biological age, more data is better. That's why MyBioAge now analyzes 6 months (24 weeks) of your health history—a significant upgrade from shorter analysis windows. This deeper look into your health patterns results in more stable, accurate biological age calculations that truly reflect your body's condition.

Why 6 months matters for accuracy

Your health metrics fluctuate daily. A single bad night of sleep, a stressful week at work, or a temporary illness can swing your HRV, resting heart rate, and recovery scores dramatically. When biological age algorithms only look at a few weeks of data, these short-term fluctuations can create misleading results.

With 6 months of data, MyBioAge can distinguish between temporary blips and genuine trends. Did your VO₂max really decline, or was that just a tough training block? Is your sleep quality actually improving, or are you just coming off a bad stretch? Deeper history answers these questions with confidence.

More stable baselines

Your personal baselines become more reliable with 6 months of data. Instead of comparing today's metrics to a shaky 4-week average, MyBioAge compares them to your established patterns over half a year. This means:

Fewer false alarms — A single off day won't tank your score.
Better trend detection — Genuine improvements show up more clearly.
Seasonal awareness — Your baseline accounts for natural variations.
Training adaptations — Long-term fitness gains are properly credited.

Enhanced Pace of Aging analysis

Pace of Aging—how fast you're aging relative to chronological time—becomes far more meaningful with 6 months of data. Short-term Pace of Aging can be noisy, jumping around based on recent events. But when calculated over half a year, your Pace of Aging reflects genuine biological trends.

Are you actually aging slower than time? With 6 months of data, MyBioAge can tell you with much higher confidence. This is the kind of insight that longevity researchers and biohackers like Bryan Johnson care about most.

Smarter AI Coach conversations

The AI Coach now has access to your full 6-month health history. When you ask "Why did my HRV drop?" or "How's my stress resilience trending?", the AI can reference months of context instead of just recent weeks. This leads to richer, more accurate insights and better personalized recommendations.

What this means for your score

When you first switch to the 6-month analysis, you might notice your MyBioAge Index stabilize. That's expected—the algorithm now has more data to work with and can calculate a more accurate baseline. Over time, your score will reflect genuine improvements in your health rather than day-to-day noise.

Privacy remains absolute

All 6 months of your health data stays on your device. There are no cloud uploads, no servers storing your history, and no analytics tracking your patterns. MyBioAge processes everything locally on your iPhone, so your extended health history remains completely private.

Getting started

The 6-month analysis is automatic in the latest version of MyBioAge. Just update the app and let it analyze your Apple Health history. If you've been tracking health metrics with Apple Watch for at least 6 months, you'll immediately benefit from more accurate biological age calculations.

For newer users, your accuracy will improve over time as you build up more history. The app works with whatever data you have and becomes more precise as your dataset grows.