Bump on nails? Is it diet related?

[Natural One]

My nails have dipped down while growing. What i mean is they are growing out thinner about a 1/4 of the way out of the cuticle. It feels like a slight ditch or bump or ridge. Does anyone know what i'm talking about? I've always understood this to be diet related, but what is the exact diet problem here? What kind of nutrient deficiency do I have? Or, might it be hormonal?

 

[diamonddiceclay]

zinc?

 

[Enock]

Zinc deficiency will cause white spots, if you don't have white spots on your fingernails its prolly not zinc. If you do mabe its also the cause.