Increase in Myopia may be due to increasing testosterone...

Arch Ophthalmol. 2009;127(12):1632-1639

It is my hypothesis that the "secular trend," the increase in size and
earlier puberty occurring in children, is caused by an increase in the
percentage of individuals of higher testosterone. More specifically, I
think this is driven by an increase in the percentage of women of higher
testosterone giving birth within the population. Exposure to increased
maternal testosterone may be the cause of the parallel increase in numerous
phenomena such as diabetes, obesity, breast cancer, etc., including myopia.
Black maternal testosterone is known to be higher than white and this fact
explains the higher incidence of myopia and increase in myopia among blacks.
Testosterone has been connected with myopia.

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

"Mike Tyner" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) ...
>
> "James Howard" <(E-Mail Removed)> wrote
>
>> Black maternal testosterone is known to be higher than white and this
>> fact
>> explains the higher incidence of myopia and increase in myopia among
>> blacks.
>
> I always heard the incidence of myopia was lower in black people than
> white.
>
> What's changed?
>
> -MT
>
From: Arch Ophthalmol. 2009;127(12):1632-1639

"Results Using the 1971-1972 method, the estimated prevalence of myopia in
persons aged 12 to 54 years was significantly higher in 1999-2004 than in
1971-1972 (41.6% vs 25.0%, respectively; P < .001). Prevalence estimates
were higher in 1999-2004 than in 1971-1972 for black individuals (33.5% vs
13.0%, respectively; P < .001) and white individuals (43.0% vs 26.3%,
respectively; P < .001) and for all levels of myopia severity (>-2.0
diopters [D]: 17.5% vs 13.4%, respectively [P < .001]; -2.0 to >-7.9 D:
22.4% vs 11.4%, respectively [P < .001]; -7.9 D: 1.6% vs 0.2%, respectively
[P < .001]).

On Dec 16, 6:04*am, "James Howard" <jmhow...@anthropogeny.com> wrote:
> "Mike Tyner" <mty...@mindspring.com> wrote in message
>
> news:(E-Mail Removed) ...
>
> > "James Howard" <jmhow...@anthropogeny.com> wrote
>
> >> Black maternal testosterone is known to be higher than white and this
> >> fact
> >> explains the higher incidence of myopia and increase in myopia among
> >> blacks.
>
> > I always heard the incidence of myopia was lower in black people than
> > white.
>
> > What's changed?
>
> > -MT
>
> From: Arch Ophthalmol. 2009;127(12):1632-1639
>
> "Results *Using the 1971-1972 method, the estimated prevalence of myopia in
> persons aged 12 to 54 years was significantly higher in 1999-2004 than in
> 1971-1972 (41.6% vs 25.0%, respectively; P < .001). Prevalence estimates
> were higher in 1999-2004 than in 1971-1972 for black individuals (33.5% vs
> 13.0%, respectively; P < .001) and white individuals (43.0% vs 26.3%,
> respectively; P < .001) and for all levels of myopia severity (>-2.0
> diopters [D]: 17.5% vs 13.4%, respectively [P < .001]; -2.0 to >-7.9 D:
> 22.4% vs 11.4%, respectively [P < .001]; -7.9 D: 1.6% vs 0.2%, respectively
> [P < .001]).

Sounds like Dr. Tyner was correct, then: myopia is less common in
blacks than in whites, though the gap may be narrowing

Otis? What do you make of this? Think black people have discovered
the secret of plus lens therapy??

Dear Mike,

Why ask me? You have declared that you will NEVER LISTEN TO THE
SECOND-OPINION.

Why ask now?

The people who have their own trial-lens kit, and verify their
refractive STATE themselves, simply clear their vision when necessary,
and keep their refractive STATE close to zero.

Thus avoiding "stair-case" mypopia -- permanently.

It is never "easy" -- but it has been done, and continues to be done
by the people who have the motivation for it.

Prevention best,

Otis

=====



Otis? What do you make of this? Think black people have discovered
the secret of plus lens therapy??




On Dec 16, 10:14*am, "Mike Tyner" <mty...@mindspring.com> wrote:
> I'm also having a hard time believing 43% of African American adults are
> nearsighted.
>
> -MT
>
> "Neil Brooks" <neil0...@yahoo.com> wrote in message
>
> news:c56367c6-99a1-482f-a155-(E-Mail Removed)...
> On Dec 16, 6:04 am, "James Howard" <jmhow...@anthropogeny.com> wrote:
>
>
>
>
>
> > "Mike Tyner" <mty...@mindspring.com> wrote in message
>
> >news:(E-Mail Removed) m...
>
> > > "James Howard" <jmhow...@anthropogeny.com> wrote
>
> > >> Black maternal testosterone is known to be higher than white and this
> > >> fact
> > >> explains the higher incidence of myopia and increase in myopia among
> > >> blacks.
>
> > > I always heard the incidence of myopia was lower in black people than
> > > white.
>
> > > What's changed?
>
> > > -MT
>
> > From: Arch Ophthalmol. 2009;127(12):1632-1639
>
> > "Results Using the 1971-1972 method, the estimated prevalence of myopiain
> > persons aged 12 to 54 years was significantly higher in 1999-2004 than in
> > 1971-1972 (41.6% vs 25.0%, respectively; P < .001). Prevalence estimates
> > were higher in 1999-2004 than in 1971-1972 for black individuals (33.5%vs
> > 13.0%, respectively; P < .001) and white individuals (43.0% vs 26.3%,
> > respectively; P < .001) and for all levels of myopia severity (>-2.0
> > diopters [D]: 17.5% vs 13.4%, respectively [P < .001]; -2.0 to >-7.9 D:
> > 22.4% vs 11.4%, respectively [P < .001]; -7.9 D: 1.6% vs 0.2%,
> > respectively
> > [P < .001]).
>
> Sounds like Dr. Tyner was correct, then: myopia is less common in
> blacks than in whites, though the gap may be narrowing
>
> Otis? *What do you make of this? *Think black people have discovered
> the secret of plus lens therapy??- Hide quoted text -
>
> - Show quoted text -

On Dec 17, 4:52*am, Otis <otisbr...@embarqmail.com> wrote:

> Why ask me? *You have declared that you will NEVER LISTEN TO THE
> SECOND-OPINION.
>
> Why ask now?

He didn't. You're an idiot.

> The people who have their own trial-lens kit, and verify their
> refractive STATE themselves, simply clear their vision when necessary,
> and keep their refractive STATE close to zero.
>
> Thus avoiding "stair-case" mypopia -- permanently.

And the people who spray Shark Away in their front yards .... have
never had a shark infestation in their front yards.

> It is never "easy" -- but it has been done, and continues to be done
> by the people who have the motivation for it.

The issue isn't difficulty. It's efficacy. Got any evidence of that?

Your nearsighted niece, Joy Benson .... is probably something we
should discuss.

Dear Mike,

As you might recall, I never said "CURE".

I said avoid entry into a negative refractive STATE.

Thus, prevention must be under control of the Engineer/Scientist
(i.e., a person like Dr. Stirling Colgate) who "wakes up" to the fact
that the eye is dynamic, and, that your are destructive to the goal of
effective (threshold) PREVENTION.

Engineering/Science best,



On Dec 17, 9:16*am, "Mike Tyner" <mty...@mindspring.com> wrote:
> I didn't ask you. That was Neil.
>
> "Otis" <otisbr...@embarqmail.com> wrote
>
> > The people who have their own trial-lens kit, and verify their
> > refractive STATE themselves, simply clear their vision when necessary,
> > and keep their refractive STATE close to zero.
>
> I can see the headlines now... MYOPIA CURED BY WISHFUL THINKING!
>
> -MT

Dear Mike,

As you might recall, I never said "CURE".

I said avoid entry into a negative refractive STATE.

Thus, prevention must be under control of the Engineer/Scientist
(i.e., a person like Dr. Stirling Colgate) who "wakes up" to the fact
that the eye is dynamic, and, that your are destructive to the goal of
effective (threshold) PREVENTION.

Engineering/Science best,



On Dec 17, 9:16*am, "Mike Tyner" <mty...@mindspring.com> wrote:
> I didn't ask you. That was Neil.
>
> "Otis" <otisbr...@embarqmail.com> wrote
>
> > The people who have their own trial-lens kit, and verify their
> > refractive STATE themselves, simply clear their vision when necessary,
> > and keep their refractive STATE close to zero.
>
> I can see the headlines now... MYOPIA CURED BY WISHFUL THINKING!
>
> -MT

On Dec 17, 9:14*am, Otis <otisbr...@embarqmail.com> wrote:
> Dear Mike,
>
> As you might recall, I never said "CURE".
>
> I said avoid entry into a negative refractive STATE.
>
> Thus, prevention must be under control of the Engineer/Scientist
> (i.e., a person like Dr. Stirling Colgate) who "wakes up" to the fact
> that the eye is dynamic, and, that your are destructive to the goal of
> effective (threshold) PREVENTION.

I must have missed the part of this that was supposed to look
like .... evidence.