Explore the science by body system
Every Signal Record connects to the systems of the body it affects. Start from a system to see the published, confidence-rated records that substantively touch it.
Brain
Cognition, mood, memory, and neurological health.
Cardiovascular
Heart function, blood pressure, and circulatory health.
Metabolism
Energy, blood sugar, and how the body processes fuel.
Muscle
Strength, recovery, and skeletal muscle performance.
Longevity
Aging biology and the science of healthy lifespan.
Hormones
Endocrine signaling that regulates the whole body.
Immune
Defense, inflammation, and resilience to illness.
Sleep
Rest, circadian rhythm, and overnight recovery.
Digestive
Gut health, the microbiome, and nutrient absorption.
Bone
Skeletal density, structure, and mineral health.
Respiratory
Lung function, breathing, and oxygen delivery.
Skin
The body's largest organ — barrier, repair, and aging.