A few pounds of weight loss nearly halves diabetes risk, large-scale study finds … FDA: Only N95s are nearly 100% effective, but cloth masks also protective … Link between gut microbiome and risk of Alzheimer’s brain plaques confirmed … Long-term study finds walnut consumption may reduce heart disease riskHeart failure drug succeeds in ‘pivotal’ trial, but slightly higher death rate seen … COVID infection rates low, illness mild in people with rheumatic disease: report