I I there is no evidence that it's an inherited or venereal problem  and this is the, you know you  we have  there has been lots of sort of studies done to see which woman might be more at risk and which women, you know, might have symptoms and th , the fact is that the reason why you, why the menopause occurs is because the ovaries stop functioning, they stop  producing oestrogen  and every woman's ovaries does this and they do it  you know, at all varying ages  the average age is fifty.