✅ NHS-sourced information. General health information only — not personal medical advice. Always consult your GP or specialist.

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BBC Health 17 September 2026

Why caffeine makes some people buzz

Scientists say it all depend on caffeine habits, lifestyle and one factor we have no control over: our genes.

📋 What this means for you AI-generated plain English summary
✓ # Caffeine Affects Everyone Differently
✓ Your genes play a big role in how caffeine affects you** — Some people are naturally fast caffeine processors while others process it slowly, which is why one cup of coffee might keep you awake all night for some people but barely affect others.
✓ Your habits and lifestyle matter too** — How often you drink caffeine, when you drink it, and how much sleep you get can change how caffeine makes you feel, so paying attention to your own patterns helps you figure out what works for your body.
✓ Notice how you personally respond and adjust accordingly** — If caffeine makes you jittery, sleep poorly, or feel anxious, you might be someone who should limit it or avoid it after a certain time of day; if it doesn't bother you much, you probably have more flexibility with when and how much you consume.

Always speak to your doctor before making any changes to your health or treatment.

Source: BBC Health  ·  Read full article ↗

Scientists say it all depend on caffeine habits, lifestyle and one factor we have no control over: our genes.

📋 Remember: This is general health information. Always speak to your GP or specialist about your own health situation.
Read full article on BBC Health ↗

This article summarises content originally published by BBC Health. PatientIQ provides independent plain English summaries.

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