Nutrition & Diet
How Long Does Caffeine Stay in Your System: Half-Life and Timeline
Caffeine has a half-life of about 4 to 5 hours in healthy adults, so half of a 200 mg coffee is still in your blood 5...
Updated October 28, 2026Topic
Healthy Living
This section covers everyday health habits. It is split into Nutrition and Diet, Fitness, Healthy Recipes, Supplement Ingredients, and Pet Health.
Our guides rely on public health sources and published research. When we talk about supplements we look at ingredient doses, evidence quality, side effects and refund policies, and we avoid hype.
Talk to your doctor before major changes to diet or exercise, especially if you are pregnant, have diabetes, heart disease or take medication.
Which daily habits matter most for long term health?
The habits with the strongest evidence are simple. Eat mostly whole foods, stay active, sleep well, avoid tobacco, limit alcohol, and keep up with checkups and screenings. Small, steady changes are easier to keep than big ones. Supplements can fill a known gap, but they cannot make up for these basics.
Source: Healthy Living, MedlinePlus