A complex series of chemical processes are triggered in our brains when we are confronted with uncertainty.

Far from being a period of existential angst and inevitable decline, our middle years can be a period of growth and happiness if we adopt a more positive attitude.

Also known as the 'Kraken', the Omicron subvariant XBB.1.5 is predicted to cause a new wave of COVID cases across the globe. But what are its symptoms? And will the vaccine work against it?

The inability to feel pleasure in some patients being treated for depression may be due to medication reducing their sensitivity to rewards.

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