Public Library of Science

Neuroscience

Touching helps build the sexual brain

Hormones or sexual experience? Which of these is crucial for the onset of puberty? It seems that when rats are touched on their genitals, their brain changes and puberty accelerates. In a new study publishing September 21 ...

Genetics

Face shape is in the genes

Many of the characteristics that make up a person's face, such as nose size and face width, stem from specific genetic variations, reports John Shaffer of the University of Pittsburgh in Pennsylvania, and colleagues, in a ...

Health

New evidence linking eggs, cholesterol to cardiovascular death

A person's intake of whole eggs and cholesterol was positively associated with their risk of death, while intake of egg whites or egg substitutes was negatively associated with death in a new study published this week in ...

Diseases, Conditions, Syndromes

Mosquito spit may affect your immune system for days

Mosquito saliva alone—even in the absence of any pathogens—contains hundreds of proteins. Now, researchers reporting in PLOS Neglected Tropical Diseases have discovered that the interaction of these proteins with the ...

Health

Effect of steroids and exercise on muscle mass and strength

The use of anabolic steroids has been observed in essentially all levels of sport – from the high-school football team to professional sports. In professional body building, steroid use is as much part of the sport as is ...

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