Signs Of Nutritional Deficiencies

Nails: 

White spots are often a sign of mineral deficiency but often low zinc

Ridges can indicate zinc deficiency

Soft or brittle nails may indicate a magnesium deficiency

Bitten nails could be a sign of general mineral deficiency 

Gums:

Pyorrhea - (inflammation of the gums and tooth sockets, often leading to loosening of the teeth.) may indicate a Co Q 10 deficiency.

Bleeding gums - Vitamin C deficiency

Gum Disease - Co Q 10, folic acid, vitamin C deficiency

Skin:

Stretch marks - zinc deficiency

Follicular hyperkeratosis - vitamin A deficiency

Spontaneous bleeds - vitamin C or K, perhaps even a platelet deficiency 

Dry scaly skin with hair follicles plugged with coiled distorted hairs and a red halo - Vitamin C deficiency

Yellow palms can be a sign of excessive beta carotene intake

Pimply rough skin at the back of the upper arms or "chicken skin" - may be a sign of essential fatty acid deficiency.

Skin of Face:

Greasy red scaly skin of face and sides of nose - vitamin b2 deficiency

Seborrheic dermatitis around the nose and acne like forehead rash - b6 deficiency

Eyes:

Cataracts - chromium deficiency or excess free radicals

Bags or dark rings under the eyes could be food allergies or intolerances.

Thanks to EdibleHarmony.com for this picture

Mouth:

Pale fissured tongue - could be an iron deficiency

Sore painful fissured tongue - vitamin b3 deficiency 

Sore burning tongue and lips or peeling of lips - vitamin b2 deficiency 

Swollen tongue with lateral teeth indentations - food intolerance

Painful sore tongue with a smooth appearnce - folic acid deficiency

Cracked lips - vitamin b2 deficiency, thrush

Throat:

 - Thyroid swelling - could be a sign of iodine deficiency 

Legs: 

Tender calf muscles - can be a sign of magnesium deficiency 

Brisk knee reflexes or restless legs - can also be a magnesium deficiency