The white half-moons at the base of the nails show the degree of activity of the metabolism with little or no half-moon indicating a slow metabolism and perhaps an under-active thyroid gland. Most people usually have half-moons during their childhood and youth, but these can diminish with advancing years and disappear completely in old age. They can also reappear with effective detoxification!
Marks on the nails
If there is one white spot then this may indicate direct trauma to the nail bed when the nail was developing.
Many also claim that one or two white marks can be an indicator of zinc deficiency.
However, heavy metals in circulation also show in the nails as white marks or bands (known as Mees’ lines) and if there are multiple or frequent white flecks or bands – this is the most likely cause. These frequently appear with effective detoxification as heavy metals such as mercury are drawn into circulation from storage in various organs.
According to TCM, white marks can also indicate an excessive intake of sugar, alcohol and/or chocolate.
Brown marks which appear like splinters are signs of haemorrhage from a tiny blood vessel. This may be due to a knock or more rarely to infection of the heart valve(s), kidneys or lungs.
Ridging and pitting of the nails
The deep horizontal ridging of the nails known as Beau’s lines is due to a temporary stoppage of nail growth. It can be a sign of zinc deficiency, a significant dietary change, stress, a serious illness or infection, a heart attack or anorexia. The event can be dated with respect to nail growth and will grow out with the nail.
The formation of vertical ridging of the nails is said to be due to excessive consumption of carbohydrates and/or a lack of protein and too much salt. The digestive system, liver and kidney are frequently underactive and this may also be accompanied by fatigue.
Pitting can be due to nail trauma, but if present on several nails may be associated with conditions such as psoriasis, atopic eczema, alopecia areata or an autoimmune disease.
Thickened nails
Thickened nails are most commonly associated with some sort of fungal infection, which may be the same yeast that causes athlete’s foot or Candida albicans. The nails may yellow and start to come away from the underlying skin. Applying Tea tree oil or lemongrass oil topically may help, but addressing the underlying cause of the yeast infection (which is often mercury toxicity) is critical to long-term well being too. Thickened nails are also said to indicate excessive protein or fat consumption by TCM practitioners.
Weak nails
Brittle nails can be due to the way the nails and hands have been treated. Methods of manicuring, dehydration, handling paper and use of detergents can all be responsible. Protect your hands and nails by wearing gloves to do the washing up, use a good hand cream and almond oil rubbed into the nail bed conditions the nails and helps to aid the circulation. Brittle nails can also be a sign of Raynaud’s disease or an underactive thyroid (hypothyroidism).
Split nails can indicate a dietary lack of zinc and/or iron. They are typically associated with a poor diet with overconsumption of fruit, fruit juices, drinks, medication and even vitamins which may deprive the body of minerals. Disorders of the circulatory or nervous systems may be at cause along with problems relating to the testicle or ovary on the side affected.
Peeling nails are often associated with indigestion, flatulence, fatigue, menstrual irregularities, lack of sexual vigour, depression, nervousness and/or insomnia.
Soft nails can be due to excessive consumption of stimulants such as coffee, alcohol or sugar. They can often indicate a weak physical constitution, but mental activity.
Ingrowing nails
Ingrowing nails usually occur on the big toenail as a result of trimming the nail allowing a nail spike to dig into the flesh. The area can become swollen and inflamed. The solution is to cut toenails straight across.
The nail affected
The particular or worst affected nails can also give you a clue as to the origin of the issue. Many of the energy meridians end on the fingers and toes and the worst affected nail may indicate the meridian most under stress. The issue also tends to be reflected on the same side of the body according to the list below, so that problems with the right testicle or ovary, for example, would manifest in problems with the right second finger nail.
For the hands:
The thumbs: Lung and respiratory functions
The first fingers: Large intestine and its functions
The second fingers: Energy and blood circulation, reproductive functions
The third fingers: Energy and heat metabolism
The little fingers: The heart and small intestine and their functions
For the feet:
The big toes: The spleen, pancreas and liver and their functions
The second and third toes: The stomach and its functions
The fourth toes: The gall bladder and its functions
The little toes: The bladder and its functions
Supplements for nail health
Vitamin C aids the production of collagen in the nail bed
Vitamin E improves strength and lustre
Biotin improves brittle nails
Folic acid helps growing nails
Calcium improves nail strength
Zinc aids growth and strength especially nail quality and sheen
CoEnzyme Q10 improves oxygen uptake and energy production in cells
Silica from a herbal source such as horsetail improves nail strength
Soy isoflavones promote nail growth and strength
MSM acts as a source of organic sulphur needed to synthesise keratin