Neuroscientist Robert Ferrante stands accused of poisoning his neurologist wife, Autumn Klein, both from the University of Pittsburgh. Medscape Medical News

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New guidelines have been developed by the Physicians Committee for Responsible Medicine. Outside experts say a healthy diet and exercise is always good advice, but evidence that this will reduce Alzheimer’s risk is lacking. Medscape Medical News

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A novel study provides “incontrovertible” evidence that prenatal tobacco smoke exposure contributes significantly to conduct problems in children, one researcher says. Medscape Medical News

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Decreased brain reactivity in response to eye contact may denote social disability in children with autism — and may eventually lead to clinical benefits, according to preliminary research. Medscape Medical News

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Preschool kids who sleep fewer than 9 hours a night may be more likely to have behavioral problems, such as aggression and impulsivity, than kids who get more sleep. Medscape Medical News

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Psychotic symptoms in teens, particularly in individuals with existing psychopathology, appear to be a strong clinical marker for suicide attempts. Medscape Medical News

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Stimulant medications in adolescents with ADHD appear to have a protective effect on the development of substance abuse disorders in this patient population. Medscape Medical News

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Greater awareness of synthetic stimulants appears to have slowed their use, but manufacturers are staying one step ahead of regulators with a new generation of similar, equally dangerous products. Medscape Medical News

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A pretreatment PET scan may pave the way past the trial-and-error approach to picking a first-line therapy for major depression, new research hints. Medscape Medical News

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After brief training in mindfulness meditation, specific brain changes that correlate with reduced anxiety are visible on imaging, new research shows. Medscape Medical News

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