Jesper Bengtson

Heart rate variability by age: the ranges that reveal how well your body recovers

Your smartwatch shows you a number in milliseconds. Here is what a healthy one looks like.

Taking warfarin? These common foods could work against your medication

Consistency matters more than avoidance, but grapefruit, cranberry and several supplements are a different story.

What time should you go to bed? The best bedtime based on your age

A UK Biobank study of 88,026 adults points to a sweet spot for lights out.

On a low-carb diet? Your genes may be quietly raising your cholesterol

A new Stanford analysis finds that genetic risk sharply amplifies LDL spikes on low-carb diets.

If you drink alcohol, the type you choose may affect your heart risk

A large UK study points to a sharp split between wine and everything else.

Over 70 and heart-healthy? A daily statin may still cut your heart attack risk by 30%

A large new trial in adults aged 70 and older changes what we thought we knew about statins.