Earlier animal studies showed that emotional or mental tension around birth affects methylation of the genes.

VOA: special.2009.11.24

Other risk factors are repeatedly putting stress on a joint or having an earlier injury.

VOA: special.2010.05.19

Under the House bill, the prohibition on denying coverage would begin one year earlier in 2013, with similar prohibitions on higher premiums based on pre-existing conditions or gender.

VOA: standard.2009.12.25

In the new study, they randomly assigned patients to get AIDS medicines when their CD4 count hit 200, the standard procedure, or to get the antiretrovirals earlier, when their CD4 had only dropped to 350.

VOA: standard.2010.07.21