By the numbers

1%

How many parents believe their teen has used a "study drug" such as Adderall without a prescription, according to a University of Michigan poll. In reality, about 10 percent of high schoolers say they have.

28.4%

The increase in the suicide rate among 35- to 64-year-old Americans between 1999 and 2010, according to a new report released by the Centers for Disease Control and Prevention.

2X

How much more likely women who use assisted reproduction to conceive are to experience stress, anxiety and depression after a first-trimester miscarriage than women who miscarry after spontaneous pregnancies, according to a study in BJOG: An International Journal of Obstetrics and Gynaecology.

32%

How much more likely "severely bald" men are to develop heart disease than men with full heads of hair, according to a meta-analysis of three cohort studies in BMJ Open.