Are vitamins relevant to cancer risks? A Mendelian randomization investigation.

Objective: The relationship between vitamin intake and the occurrence of cancer is controversial. The aim of this study was to examine the genetic associations between vitamins D, E, and B and five cancers (i.e.

Decline in semen concentration of healthy Chinese adults: evidence from 9357 participants from 2010 to 2015.

The present study aims to analyze sperm concentration trends among young and healthy Chinese adults in Wuhan, Central China, from 2010 to 2015. Semen analysis data from 9357 participants were collected and analyzed using a general linear model and the Cochran-Armitage trend test. A significant decline was observed in sperm concentration (β [standard deviation]: -1.