Scientists expose vaccine volunteers to dengue virus and find 100 percent were protected; Our alarmingly polluted environment is killing 12.6 million each year, WHO warns; How schools are using ‘mindful eating’ to help prevent eating disorders; ​’Siri, I want to commit suicide’ and other statements likely to yield unhelpful responses from your phone; Kids with August birthdays are more likely to get an ADHD diagnosis. Here’s why.; There’s a new theory about why some cancer therapies fail. It’s about timing.;     Scientists expose vaccine volunteers to dengue virus and find 100 percent were protected "Knowing what we know about this new vaccine, we are confident that it is going to work," one researcher said. By Ariana Eunjung Cha  •  Read more » ADVERTISEMENT   Our alarmingly polluted environment is killing 12.6 million each year, WHO warns The issues include air, water, and soil pollution and ultraviolet radiation. By Ariana Eunjung Cha  •  Read more »   How schools are using ‘mindful eating’ to help prevent eating disorders Mindful eating invites participants to "pay attention" to the food in front of them and engage their five senses before consuming a single morsel. By Juli Fraga  •  Read more »   ​’Siri, I want to commit suicide’ and other statements likely to yield unhelpful responses from your phone The study looked at smartphone responses to questions about physical and mental health and violence. By Ariana Eunjung Cha  •  Read more »   Kids with August birthdays are more likely to get an ADHD diagnosis. Here’s why. Diagnosing ADHD is never black and white and many educators have expressed concern that the youngest kids in a class may appear more immature and get the label. By Ariana Eunjung Cha  •  Read more »   There’s a new theory about why some cancer therapies fail. It’s about timing. The researchers from MIT's Koch institute suggest there may be "windows" of opportunity for drugs to work. By Ariana Eunjung Cha  •  Read more »   ADVERTISEMENT   Recommended for you   Lean & Fit Fitness and wellness trends in your inbox weekly. Sign Up »         Share To Your Health:       Twitter      Facebook Trouble reading? Click here to view in your browser. You received this email because you signed up for To Your Health. For additional free newsletters or to manage your newsletters, click here. We respect your privacy. If you believe that this email has been sent to you in error or you no longer wish to receive email from The Washington Post, click here. Contact us for help. ©2016 The Washington Post, 1301 K St NW, Washington DC 20071