What are LH changes with aging
What are LH changes with aging?
:
Check out the handout she gave you about the levels of hormones in all stages of life. This will help you understand what the important hormonal changes with aging are.
The important thing is that LH peaks are not the same in elderly people, such that LH does not stimulate ovulation in women. For clarification, see p. 192. Men also have changed LH pulsations. See p. 216 for details. This is the most important point.
What are FSH changes with aging?
FSH is more unclear--there has been shown to be a slight increase in FSH (see p. 192) in women with the start of menopause. I don't think we really discussed this with men.
Here is what she showed on her slides about hormonal changes in women
Hormonal Changes From Aging in Women
Gonadotropins:
LH
Change to pulsatile pattern:
increase Duration, decrease Frequency
FSH
increased "Monotropic FSH " (ie increased FSH)
1st Noticed prior to any change in cycle length
Ovarian Steroidal Hormones
Estrone levels up early in the cycle in older ovulatory women
Possible due to LH/FSH alterations
Eventually, H-P-G axis is unable to generate LH surge needed for ovulation
Here is what she showed on her slides about hormonal changes in men
In the male, with Age:
On the average, the male reproductive function remains normal (or only slightly diminished in some individuals) until advanced old age (80+ years) when reproductive function decreases.
Subtle changes include decreases in the following:
GnRH
Sensitivity of androgen secretion to LH
Sensitivity of negative feedback between GnRH and LH
Also in men, with aging, loss of high-amplitude LH pulses despite normal or increased pituitary LH stores
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