Your mouth’s hue could be a glaring indicator of your wellbeing, an expert has warned. While it may not sound as romantic as the eyes being ‘the window to your soul’, Healthline medical professionals advise that you should regularly inspect the inside of your mouth for any unusual colour changes, which could signal underlying health issues.

Surprisingly, this includes oral herpes – a sexually transmitted infection that can cause yellowish canker sores to appear on the roof of your…