White spots on the nails is usually a clear indication of zinc deficiency. Poor healing of wounds and tendency to infections is often associated with inadequate zinc intake. Men have a specific need for zinc. Involved with body's use of C by helping its oxidation in the body. Important to tensile strength and elasticity of coronary blood vessels.
Lack contributes to osteoporosis.
Function in oxygenation of tissues. Health of hair. Colour of hair. Vitamin B6 is required for copper enzyme synthesis. Role in insulin production and utilisation - helps normalise blood sugar levels.