Many of us suffer from bad breath, cracked lips and agonising headaches. But they could all be a sign of something much more sinister.
These are just three of the common signs of vitamin or mineral deficiencies, experts have warned on the back of a new poll of 2,000 adults.
Other issues which could point to an insufficient diet include thinning hair, a lower libido, white spots on your nails, dandruff, stress and even dry skin.
The findings, commissioned by Healthspan, showed six in ten adults are clueless about signs that could show they are suffering from a deficiency.
But according to Rob Hobson, a London-based nutritionist, adding more spring greens, red meat, and nuts to your diet could help combat any distressing symptoms.
Here, MailOnline Health reveals the common signs of any potential deficiencies, and the foods you could eat to help you overcome them.
A range of common symptoms many adults suffer from could be explained by poor diets and a lack of minerals and vitamins. Here, MailOnline Health reveals how to combat bad breath, headaches and even stress
What it could be a sign of: Iron or vitamin C deficiency
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Foods that may help overcome it: Red meat, red peppers, kale and tofu
What it could be a sign of: Biotin, vitamin B7 or essential fatty acids deficiencies
Foods that may help overcome it: Fresh salmon, almonds, peanut butter and sunflower seeds
What it could be a sign of: Iron and vitamin C deficiency
Foods that may help overcome it: Lemons, kiwi fruit, strawberries and red kidney beans