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Adolescent Cannabis Use Doubles Psychotic and Bipolar Disorder Risk, Large U.S. Study Finds

Universal pediatric screening data showed use typically preceded diagnoses by roughly two years.

Harvard Meta-Analysis Links Spiritual Practices to Lower Risk of Hazardous Substance Use

Prospective U.S. Study Links Problematic Screen Use in Early Adolescence to Later Mental Health Risks

Night Owls Linked to Higher Heart Risk, Largely Driven by Changeable Habits

Ontario Study Finds Psychosis Diagnoses Rising Sharply in Newer Generations

Study Ties Evening Chronotype to Poorer Heart Health and Higher Cardiovascular Risk

Mixing Exercise Types Is Linked to Longer Life, Large BMJ Study Finds

Study Links Third-Trimester Wildfire Smoke to Higher Autism Risk in Southern California Births

Mixing Exercise Types Is Tied to Longer Life, Study Finds

French Study Links Some Food Preservatives to Higher Cancer Risk, Prompting Calls for Review

Full-Fat Cheese and Cream Linked to Lower Dementia Risk in Long Swedish Study

Tea Linked to Slightly Higher Bone Density in Older Women — Heavy Coffee Tied to Lower Levels

Light Drinking Raises Blood Pressure, Large JACC Study Finds

Consumer Reports Finds Elevated Lead in Many Protein Powders, with Plant-Based Products Testing Highest

Brown Study: Only 14% of Elementary Schoolchildren Get Recommended Sleep

Late-Life Head Injuries Raise Dementia Risk and Care Needs, Canadian Cohort Study Finds

AAP 2025 Study: Parent-Owned Guns Most Often Used in Child Firearm Suicides

Later Breakfast Linked to Higher Mortality in Older Adults, Long-Term UK Study Finds

Stress and Anxiety Tied to Mixing Binge Drinking and Cannabis in Young Adults

Sleep Tops Diet and Exercise in Predicting Young Adults’ Well-Being, Study Finds