The primary focus of smoking cessation research has been adults in the past, but a new study zeroed in on adolescents. This study found that while there was no significant difference between the varenicline group and the placebo group at end of treatment, those in the varenicline group quit earlier in the trial and were less likely to relapse after the trial was over. And it encourages new treatments designs for adolescents.

A new study suggests there is a two-way relationship between bullying perpetration and mental health problems among U.S. youth. Researchers report that bullying perpetration increased the risk of developing internalizing problems, and having internalizing problems increased the probability of bullying others. While previous research has focused on the causes and consequences of bullying victimization, this is the first study to comprehensively explore the time sequence between bullying perpetration and mental health problems.

Concussion, the most common form of traumatic brain injury, has been linked to an increased risk of depression and suicide in adults. Now new research suggests high school students with a history of sports-related concussions might be at an increased risk for suicide completion.

Binge drinking among U.S. adolescents precipitously declined from 1991 to 2018, according to a new study. Depressive symptoms among U.S. adolescents have sharply increased since 2012. And for the first time in the past 40 years, binge drinking and depressive symptoms among adolescents are no longer associated.

Children who experience maltreatment, such as neglect or physical or sexual abuse, are more likely to engage in delinquent and offending behaviors in adolescence and young adulthood, according to a new study.

Ideal heart health declines between ages 9 and 19 for girls, particularly for black girls and girls from families with lower education and income levels.

A new analysis of US data finds an unexpectedly high prevalence of prescription opioid use among youth. As recently as 2015-2016, 21% of adolescents and 32% of young adults said they had used these drugs in the past year. Nearly 4 percent and 8 percent, respectively, reported misusing opioids.

A new study shows how a parent's use of marijuana, past or present, can influence their child's substance use and well-being.

Teens who vape candy- or fruit-flavored e-cigarettes are more likely to stick with the habit and vape more heavily.

Researchers have developed a simple, low-cost way to predict preeclampsia, a potentially deadly condition that kills 76,000 mothers and 500,000 babies every year.

New research found that the amount of time spent on social media is not directly increasing anxiety or depression in teenagers.

Adolescents who play contact sports, including football, are no more likely to experience cognitive impairment, depression or suicidal thoughts in early adulthood than their peers, suggests a new study of nearly 11,000 youth followed for 14 years.

Three simple factors that predict whether a healthy weight child will be overweight or obese by adolescence have been revealed in a new study.

Throughout life, women's fertility curve goes up and down, and researchers have now shown why. The results might have impact on fertility counseling and in the longer term for treatment of infertility.

People with low scores on intelligence tests in adolescence run a higher risk of suicide and suicide attempt later in life. That is according to a study that followed almost 50,000 Swedish men from the 1970s until recently.

New research has found that maternal stress before and during pregnancy could affect a baby's brain development.

Severe and persistent infant sleep problems in the first year are linked to poor maternal mental and physical health during pregnancy, a new study has found.

Children whose mothers had hyperemesis gravidarum -- a severe form of a morning sickness -- during pregnancy were 53% more likely to be diagnosed with autism spectrum disorder, according to new research.

Children born to women who have high blood levels of lead are more likely be overweight or obese, compared to those whose mothers have low levels of lead in their blood, according to a new study.

Investigators report that there was no association between oral contraceptive use and depressive symptom severity in the entire population they studied (ages 16 through 25). However, they found that 16-year-old girls reported higher depressive symptom severity compared with 16-year-old girls not using oral contraceptives.