Nerve Growth Factor, Early Romantic Love, DHEA and Testosterone

Nerve Growth Factor and ?early stage romantic love,? DHEA and Testosterone

Copyright 2005, James Michael Howard, Fayetteville, Arkansas, U.S.A.

Based on the new finding that nerve growth factor increases in "early stage
romantic love" then dissipates within a year (Psychoneuroendocrinology
2005; Emanuele, et al.), I suggest the following:

"When we experience things new, we produce a stress response. This produces
the DHEA to cortisol ratio. If the experience produces more DHEA than
cortisol, this produces "good" responses; if cortisol is too high, this is
a "bad" response.

DHEA increases nerve growth factor; cortisol reduces it. One falls in love
with another who increases their DHEA to cortisol response. As the
"newness" dissipates, the effects of growth caused by DHEA and NGF also
dissipates. If the original, and subsequent, effects are strong enough, a
"bond" is formed by growth caused by DHEA and NGF."

Testosterone is paramount in ?early stage romantic love.? Testosterone has
been demonstrated to be involved in male facial attractiveness and coitus
activity in women (see articles at www.anthropogeny.com/evolution.html ).
Testosterone reduces DHEA levels but also increases nerve growth factor.
That is, increased testosterone probably increases the NGF response to
?early stage romantic love,? but also may cause a more rapid decline in the
stress response elicited by male and female interactions. Therefore, this
explanation may also explain why men stray faster than women. However, my
work also suggests that the "secular trend," the increase in size and
earlier puberty of children, is caused by an increase in the percentage of
individuals of higher testosterone with time within the population. This is
primarily driven by women of higher testosterone. Therefore, women are
becoming more and more like men and this will shorten the time between
"early stage romantic love"s stimulation of NGF and its dissipation in men
and women.


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