Harvard Health

Platelet-rich plasma, derived from a person's own blood and then injected back into their scalp, has shown some promise as a treatment for certain types of hair loss. However, the treatments are expensive, and there is no guarantee that they will work.

The post Platelet-rich plasma: Does the cure for hair loss lie within our blood? appeared first on Harvard Health Blog.

Can childhood tetanus vaccinations offer sufficient protection during adulthood without regular booster shots? Although a new study posits this, the CDC continues to recommend booster shots every 10 years.

The post Do adults really need tetanus booster shots? appeared first on Harvard Health Blog.

The body's circadian rhythm controls our sleep-wake cycle, so an irregular rhythm can negatively affect sleep and proper functioning, which can lead to health problems including mood disorders. The tendency to rise early or stay up late is genetically determined, but you may be able to adjust your life to better match your circadian rhythm.

The post Why your sleep and wake cycles affect your mood appeared first on Harvard Health Blog.