Cancer treatment and 'time toxicity'; youth mental health and smoking; a paradox for cholesterol levels

The term 'time toxicity' expresses the idea that if treatment to extend a patient's life means lengthy periods in medical facilities, it may be time wasted; In Australia smoking has decreased generally, but tobacco use is higher than average in young people with mental health issues; The bad form of cholesterol is LDL — low-density lipoprotein, and high-density lipoprotein is the good form. An new study suggests there's a limit on how high HDL should be.