Which of the following statements about the prevalence of perinatal mental health problems is true? (select all that apply.) a the world health organization (who) recognizes postpartum depression as the leading cause of disability in women. b up to a ¼ of pregnant women will experience some aspect of depression during their pregnancies.

the answr is b. B Up to a ¼ of pregnant women will experience some aspect of depression during their pregnancies.

this is true my friend.        

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.