It sounds like you would need some TCL after receiving such a very poor response to your question. I apologise for not being able to give you a proper answer sooner but I have been away on business for some time.
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In asking your question you mention two things that can have a negative effect on hair, stress and the menopause. It is highly unlikely that you will experience any hair loss prior to any hormonal changes occurring but when the level of oestrogen begins to reduce then excessive hair loss is extremely common. In most women this hair loss is classed as temporary and reversible and most of the hair that falls out due to the disruption caused by the fall in oestrogen will be replaced - but this takes time. When a hair falls from the scalp the hair follicle goes into a resting phase, this is perfectly normal and will last for approximately three months, only after that will a new hair start to grow and then at a rate of 2-3cm per month, so it takes some time for the hair to fully recover.
In women with a genetic predisposition to thinning hair the hair can respond badly to the fall in the level of oestrogen and never really recover fully. Many women find that HRT has a positive effect on their hair because the it can raise the level of oestrogen and stimulate hair growth. If you think the menopause could be starting in your case you could talk to your GP about this.
Another very common cause of hair loss is stress, and it can affect anyone. Stress commonly accelerates the hair growth cycle, shortening the growing phase of the hair so it falls out faster. The old hair will be replaced but, for example, if a hair falls out after growing for only two years rather than, say, four or five which may be your normal growth period, and this is affecting virtually all the hair on your head then the overall effect can be dramatic.
This type of hair loss generally stops when the causative stress factor has disappeared, but good ways of helping your body deal with stress and reducing the negative effects it can have on your hair are to get plenty of exercise (no need for a gym, long brisk walks will do it) as this burns up adrenaline and testosterone (yes, women have it too). It is also a good idea to make sure your diet is well-balanced with plenty of fruit, vegetables proteins, water etc. Also ensure that you are getting the quantity of sleep you think your body needs.
Finally, if the problem continues you should go to see a qualified trichologist to let them try to find out the exact cause of the problem and advise you what to do about it. The Institute of Trichologists will give you a list of people in your area. Tel: 08706 070602
I hope that, this time, the answer was helpful.