El sexo oral puede transmitir el herpes, la gonorrea, la clamidia, la sífilis, el VIH y el virus del papiloma humano (VPH), que puede provocar cáncer de cuello uterino y de cabeza y cuello.
¿Por qué? Los candidatos con perspectivas positivas casi siempre ganan las elecciones presidenciales en Estados Unidos, dice un equipo de investigadores. Entonces, ¿quién va a ganar esta vez?
Muchas personas han declarado haber viajado al mundo de los espíritus durante un roce con la muerte. Ahora los investigadores dicen tener una explicación.
¿Está resfriado? Quizá hayas oído que la hierba equinácea puede ayudarte. Pero, ¿debes tomar el té, la tintura o las cápsulas? ¿Con o sin sello dorado?
Los ritmos circadianos -nuestros ciclos biológicos de 24 horas- rigen algo más que nuestra vigilia y nuestro sueño. Afectan a cuándo nacemos, cuándo morimos y cómo pasamos los días intermedios.
Para las personas que están demasiado ocupadas, no pueden salir de casa o viven en zonas remotas, la terapia por Internet es una de las pocas alternativas disponibles.
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