Uncategorized Out of Africa and into an archaic human melting pot

Out of Africa and into an archaic human melting pot

Genetic analysis has revealed that the ancestors of modern humans interbred with at least five different archaic human groups as they moved out of Africa and across Eurasia. While two of the archaic groups are currently known – the Neandertals and their sister group the Denisovans from Asia ¬- the others remain unnamed and have …

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Uncategorized Study identifies the best healthy eating nudges

Study identifies the best healthy eating nudges

Ever since Richard Thaler won the Nobel Prize in Economics, “nudge” has been front and centre in the interest of researchers and policy makers. A simple definition of nudge is an intervention that attempts to influence behaviours without using economic incentives and while preserving freedom of choice. In a meta-analysis of real-life experiments drawn from …

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Uncategorized Exercise may increase lifespan ‘regardless of past activity levels’

Exercise may increase lifespan ‘regardless of past activity levels’

Exercise is good for us, without a doubt. From lowering the risk of cardiovascular disease, cancer, and diabetes, to increasing life expectancy, the benefits of physical activity are numerous, as countless studies have shown. But does it matter when one starts to exercise, and is it ever too late to reap the benefits? New research …

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Uncategorized Sleep readies synapses for learning

Sleep readies synapses for learning

Synapses in the hippocampus are larger and stronger after sleep deprivation, according to new research in mice published in JNeurosci. Overall, this study supports the idea that sleep may universally weaken synapses that are strengthened from learning, allowing for new learning to occur after waking. Sleep is thought to recalibrate synaptic strength after a day …

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