Bone hormone boosts muscle performance during exercise but declines with age


When we exercise, our bones produce a hormone called osteocalcin that increases muscle performance, according to a study publishing June 14 in a Cell Metabolism special issue on aging. Osteocalcin naturally declines in humans as we age, beginning in women at age 30 and in men at age 50. This study describes the first bone-derived hormone known to affect exercise capacity and shows that osteocalcin injections can reverse the age-related exercise capacity decline in mice. Leer Más

Why aren’t men as caring as women? Blame their hormones! High levels of testosterone affect parts of the brain linked with emotion


  • Researchers in Holland focused on how testosterone affects empathy
  • In women given high doses of the hormone their brain activity changed
  • They were slower to recognise emotions and made more mistakes in tasks
  • The findings show that elevated testosterone can affect how brain regions communicate, reducing a person’s ability to empathise with others

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El Alzheimer podría ser una Diabetes tipo 3


No, ni me he vuelto loco ni me he fumado nada raro. Puede que a primera vista os pueda parecer un poco extraño una relación entre una enfermedad neurodegenerativa como es el Alzheimer, esa famosa enfermedad cerebral que conlleva un gran deterioro de la memoria, entre otras cosas, y una enfermedad metabólica como la diabetes. Pero si, aunque parezca raro, hay una relación y bastante potente. Tanto es así que algunos expertos ya llegan a denominar el Alzheimer como una posible Diabetes tipo 3. Leer Más