There is a lot of ground to cover when trying to understand what hair is, what it is made of, how it grows and what causes female hair loss conditions. We have already looked at a number of key facts, but there is still some way to go.

The following are a few more facts and snippets of information about human hair.

• One of the main functions of hair is to regulate the temperature of the body, helping with heat insulation and cooling

• Hair also protects the skin from the dangers of exposure to UV radiation from the sun

• Hair also has a sensory function, helping the skin to sense touch by other objects and movements of air
• The function of eyelash and eyebrow hair is to protect the eyes from dust, dirt, sweat and any other forms of moisture (i.e. rain)

• The most common causes of female hair loss are conditions such as alopecia areata, telogen effluvium and androgenic alopecia (pattern baldness). Chemotherapy and radiotherapy treatment for cancer can also cause hair loss

• Other hair loss conditions include trichotillomania (the compulsive pulling out of one’s own hair) and traction alopecia (where excessive tension on the scalp causes hair to fall out)

If you have been diagnosed with a female hair loss condition, it can be helpful to know a little more about hair, such as what it is made of and how it grows.

The following are a number of key facts about hair, which may prove relevant to your female hair loss condition.

• Hair is made of keratin, which is a fibrous structural protein used by the body to form skin and nails too

• Hair growth starts in the hair follicle and occurs everywhere on the skin apart from on the lips, soles of the feet and palms of the hands. This tissue is known as glabrous skin

• Visible hair is considered to be ‘dead’ tissue; the ‘living’ portion of the hair is found in the follicle

• Hair is made up of the bulb (at the base of the root), the sebaceous gland (used to lubricate the hair) and the erector pili muscles (these make the hair stand up)

• Human hair varies in thickness from 0.00067 to 0.0071 inches

• Hair colour is created by melanin, which is produced inside the hair follicle

• Hair growth follows a specific cycle, moving through the anagen (growth), catagen (transitional) and telogen (resting) phases. These phases all occur simultaneously; meaning that different hairs are in different phases at the same time.

One of the most frightening things about hair loss is the lack of control over what is happening to your body, especially with conditions such as alopecia, telogen effluvium or pattern baldness where the hair falls out suddenly and without any noticeable cause.

There is often nothing you can do to stop your hair falling out; all you can do is watch. This can be very upsetting, causing the sufferer no end of anxiety and distress.

However, some people with hair loss take the bold step of shaving all of their hair off and embracing baldness. By stopping it in its tracks and choosing the way you look, you get to take back some control over your body and appearance.

It can be hard to face the world for the first time without the ‘self-confidence shield of hair, leaving many people unable to interact and deal with people in the same way as before.

You need a lot of support, self-confidence and self-belief to shake off the stigma of female hair loss and be happy with your new look, but you can do it if you remember that true beauty comes from the inside. You don’t need hair to look gorgeous; often all you need is a smile on your face.

When you are pregnant, a lot of changes take place in your body. The fluctuations of hormone levels in the body and increased amounts of oestrogen may mean that you find your hair becoming thicker and fuller whilst you are pregnant. However, hormonal changes may also cause your hair to fall out.

Most women who experience female hair loss at this time in their lives do so after they have given birth. After enjoying thick, healthy-looking hair throughout the pregnancy, the hair can start to fall out around three to six months after delivery.

Hair loss of this kind occurs because rising hormones during the pregnancy have caused more hairs (around 60 per cent) to enter the resting (telogen) phase.

Your hair shouldn’t fall out during pregnancy; it is only after you have given birth, when your hair growth cycle returns to normal, that hairs reach the end of the telogen phase and fall out. The normal levels of hair loss that were delayed during pregnancy may start to happen all at once.

This kind of hair loss is known to be temporary, with hair growth returning to normal within six months to a year.

If you notice some of your hair has fallen out, it’s perfectly natural to be concerned that something is wrong. However, you need to be sure you aren’t worrying unnecessarily. Learning a little more about the normal cycle of hair growth and loss can help to alleviate your fears, as well as giving you an insight into what constitutes ‘excessive’ hair loss.

Normal hair growth cycle

Hair normally grows in three stages:

• The anagen (growth) phase – lasting up to eight years. Around 85 per cent of all hairs on your head are in this phase at one time
• The telogen (resting) phase) – this is where 10-15 per cent of the hair and the follicle remains dormant for up to four months
• The catagen phase – the transitional phase, lasting around two weeks

On average, hair grows around 1.25 cm (0.5 inches) a month. This adds up to around 15cm (6 inches) a year.

Normal hair loss

As you will have noticed, everyone loses some hairs every day. These are the hairs that are at the end of the telogen phase falling out and being replaced by new hairs growing in the follicle. It is normal to lose around 50 to 100 hairs every day; if you notice considerably more than this falling out, you should make an appointment to see your GP.

There is no ‘magic’ cure for hair loss, but there are some things you can do to help improve the condition. These mainly relate to staying healthy and eating properly, making sure you get all the essential vitamins and minerals you need every day.

Certain vitamins can be helpful in preventing hair loss, encouraging hair to regrow and generally improving the health of hair. The main vitamins and minerals you should consider getting more of in your diet include:

• B vitamins
• Iron
• Zinc
• Folate
• Calcium

A good quality multi-vitamin taken daily can ensure you get the right amounts of these vitamins and minerals in your diet. If you have a deficiency of just one of these, such as vitamin B12 or iron, you will need to see your doctor for diagnosis and advice. Occasionally, dietary deficiencies can be a main cause of hair loss.

What about biotin?

The B-complex vitamin known as biotin or vitamin B7 is often promoted as a hair growth supplement, but scientific tests haven’t yet proven whether it helps with regrowth or not. However, biotin is good for strengthening nails and hair in general.