Fingernail impression from the hand of a macaque.
Primates have ‘human-like’ short, flat fingernails!

Did you know that far most primates have ‘human-like’ short, flat fingernails? Except for marmosets and tamarins, all primates have flat fingernails and toenails instead of claws. What are the major differences between the hands of primate species and the human hand?

• 1 – Primates usually have a shorter thumb than humans – the thumb of the macaque (see photo on the left) does not rearch out behond the distal border of the handpalm.

• 2 – Primates usually have a lower ‘2D:4D digit ratio’ than humans – the hand of the macaque is featured with a much longer ring finger (digit 4) than the pointer finger (digit 2).

• 3 – Primates usually have more fingerprint- and palmar whorls than humans – the hand of the macaque is featured with 5 palmar whorls.

• 4 – Primates always have a lower ‘ridge density’ than humans.

• 5 – Primates usually have (various) palmar transversal hand creases, a.k.a. ‘simian lines’ – the hand of the macaque has one ‘simian line’.

SUGGESTIONS FOR FURTHER READING:
PRIMATE HANDS – Finger length linked with social behavior!
Understanding our past: the human hand vs. the primate hand!
The Monkey Palmist!
Hands in the perspective of evolution!
More interesting stories about the hands of primates!

PHOTO: Impression from the hand of a chimpanzee:
Impression from the back of the hand of a macaque.

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Nails grow 25% faster than 70 years ago!

Nails grow 25% faster than 70 years ago!

Fingernails grow faster on a protein diet & vitamin D!

Last months researchers from the University of North Carolina presented a study in which they monitored 195 fingernails and 188 toenails over a period of three months. Then they compared their results with studies on nail growth that were in 1938 and the 1950’s.

The new study points out that today people’s fingernails grow 25 percent faster than 70 years ago!

THE RESULTS IN A NUTSHELL:

The new results revealed that fingernails now grow by 3.47mm every month – almost twice as fast as toenails. Thumbnail growth rate was 3mm a month in 1938 and 3.06mm in the 1950’s study. However, the average thumbnail now grows by 3.55mm a month – an increase of more than half a millimetre over seven decades. The little finger nail grows much more slowly than other fingernails, at a rate of 3.08mm each month. The middle finger has the fastest-growing nail.

The results also confirmed that the nails of younger people and men grow faster. Nails tend to grow faster in summer. Cold environments and smoking are factors that can slow down growth.

Nails grow 25% faster than 70 years ago!

FOOD & LIFESTYLE:

A rapid change in the environment, lifestyle and health conditions – such as diet, physical activity and body composition – has occurred over the past 30 years. During post-war rationing, foods rich in protein were scarce. Instead, diets consisted of carbohydrate-rich foods such as potatoes and bread. However, the modern diet is rich in protein from readily available fish, meat, eggs and poultry – may be behind the spurt in nail growth.

Teresa Smith, director of a mobile manicure service said:

“Nail length has increased, the main reason being that we have a far more healthy, balanced diet. Also, people are more aware of their bodies’ nutritional needs.

The sun does help nails grow faster, too, because of Vitamin D. And people tend to drink more water in the summer which flushes out toxins and makes the body healthier, so nails grow stronger.”

MORE ABOUT GROWING LONG FINGERNAILS:

New research says: ‘nails grow faster on a protein-diet & vitamin D!’
About fingernails & medical hand analysis!
More research reports about nails!
Lee Redmond was on a protein-diet when she grew her record ‘world longest fingernails’!


Onychomycosis is a fungal infection causing deformity of the fingernail.

‘Onychomycosis’ is the medical term for nail fungus – which is usually the result of a living organism that thrives in dark, damp environments such as under and around nails. This nail disease is commonly misunderstood: it is usually NOT related to poor hygiene!

Fungal infections are very common on both fingernails and toenails. Toenails are more likely to be affected by onychomycosis since it is attracted to a dark and damp environment which is more common on the foot than on the hand. A common cause of ‘onychomycosis’ in the fingernails is… artificial nails!!

SOME STATISTICS ON ONYCHOMYCOSIS:


“Up to 50% of people over the age of 50 have a nail fungus infection to some degree. Approximately 10% of worldwide population suffers from onychomycosis.

The prevalence of childhood onychomycosis is estimated 0.2%. The typical age range for onychomycosis in children is 6-14 years of age.”

This disease is commonly misunderstood and left untreated for various reasons. nail fungus, in particular, is notoriously difficult to treat.

Onychomycosis is usually a chronic condition that progresses to involve more of the nail and other toes. Even if you lose the affected nail, the nail that grows back is usually also still affected by the fungus.

RESULTS OF TREATMENT ARE USUALLY POOR:

There are some internal medications available by prescription that help fight onychomycosis, but they can have severe side effects such as upset stomach, headaches and liver damages. Also mixing these drugs with other medications can be extremely dangerous.

Not to mention the cost. Some of the nail fungus prescription medications can cost well over $1000 by the time treatment is complete. Studies show that there is only 35-50% complete cure rate after 72 weeks of using these prescription medications as a nail fungus cure.

Topical medications are helpful in treating early small infections. They just aren’t capable of penetrating the nail to reach all of the fungi, so most prove unsatisfactory as a nail fungus cure.

SUGGESTION FOR FURTHER READING:

Onychomycosis in fingernails is often due to artificial nails!
Onychomycosis in the hands of children!
Onycholysis – when fingernails turn white or yellow at the distal part of the nail plate