Do you crave chocolate?

You may lack phenylethylamine.
Cocoa, sugar, fat and caffeine – what’s not to love about chocolate? Here’s another reason: chocolate contains anandamide and tryptophan, substances which are essential for producing the mood-enhancing neurotransmitter serotonin.

More importantly, chocolate has phenylethylamine (PEA), a chemical that releases another neurotransmitter, dopamine, into the brain’s pleasure centres.

“Chocolate cravings are not unusual,” says Jim Campbell, a British forensic scientist and author of The Body Language of Health (written under the pen name of Hamish MacGregor), who adds that some people are particularly switched on to the urge to stimulate the reward centre in the brain.

Do you get a stuffy nose from red wine?

You could be deficient in molybdenum.
If you like a glass of wine at the end of the day, you could also be among the eight per cent who suffer from allergy-like symptoms such as stuffy noses, and minor skin rashes. One eighth of those cases are caused by a deficiency in the trace element molybdenum that can cause sensitivity to the sulfites in wine. The rest, says a 2010 Italian study, may be related to glycoproteins, proteins that cover sugar produced by fermentation.

The answer? Ask your doctor about a regime of molybdenum and copper, the combination of which must be carefully balanced since too much of one can cause a drop in the other.