I don't think birth order matters. I'm the oldest of 4 between both of my parents and I have 3 half brothers. All boys. No diagnosed or undiagnosed mental or physical disabilities in my family. I'm the odd man out, as everyone else is "normal".  The only medical problems in my family are my dad's high cholesterol, my peach allergy and me and my 2nd brother are allergic to cats.

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I'm be the odd one an say I'm the youngest of six, everybody is cis and straight except one who is nonbinary. Depression and anxiety runs in the family.

I'm the youngest of four.  I have 3 brothers who are 8,9 and 10 years older than me.
I was supposed to be the girl, my parents last hope!

Oh wait I am!

Youngest of six with a family history of substance abuse and suicide, yet I have never been addicted to anything afaik and never considered suicide outside of being trans. Everyone else seems to be cisgender and straight in my entire family.

Second and Last!
My sister doesn't have anything, and,
Well, I was diagnosed with Asperger syndrome when I was a child but since I reached 9 it doesn't affect anything (like nothing at all).
Oh and also, when I was 1 I used to die (I'm being serious) for a while with no way of reviving me, externally like shocks or anything, just randomly die to revive on my own after 10 minutes to an hour. Only thing they could do for me was keep my dead body warm. I haven't managed to find a name but I grew out of it after a couple of months or a year maybe.

                                                                           Love, Sarina!

I am also the oldest. No disabilities between my brother and I. It appears on this thread and the poll linked that there is some correlation between being transgender and the oldest sibling, but there should be a formal study done to verify this.

I got diagnosed Asperger's syndrome (a couple of years before I realized I'm trans) and the doctors wanted to find out if I had ADD too. But I refused ADD examination, because I don't want to get the wrong diagnose for second time. I'm transgender as well. Hasn't get the diagnose, but I know myself so much that I know it.

Oldest of 3 and as it turns out my sister has some of he own feelings towards not being in the right body doubtfull shell ever do what i'm doing though shes said Its not to strong. Shes the middle child and we all have some form of mental illness I've got add, and bipolar, shes got bipolar and our little brothers got adhd.

Quote from: Rylie M on March 24, 2016, 09:45:15 AM
Oldest of 3 and as it turns out my sister has some of he own feelings towards not being in the right body doubtfull shell ever do what i'm doing though shes said Its not to strong. Shes the middle child and we all have some form of mental illness I've got add, and bipolar, shes got bipolar and our little brothers got adhd.

It's not necessary your sibling feels like they are born in the wrong body, just because they are transgender. Being trans isn't about feeling like you're born in the wrong body. It's about you thinks your own genitalia etc. don't match your true gender identity. Your sex organs and gender identity don't match, because difference developing.

Quote from: Hikari on March 17, 2016, 06:32:09 PM
Youngest of six with a family history of substance abuse and suicide, yet I have never been addicted to anything afaik and never considered suicide outside of being trans. Everyone else seems to be cisgender and straight in my entire family.

That's good that you have never been addicted to anything. I've never had a problem with substance abuse, but every suicide attempt I have had was based on being female. Is your family understanding and accepting of you? Hope your suicide attempts are gone now.

Quote from: Sebby Michelango on March 25, 2016, 07:01:04 AM
It's not necessary your sibling feels like they are born in the wrong body, just because they are transgender. Being trans isn't about feeling like you're born in the wrong body. It's about you thinks your own genitalia etc. don't match your true gender identity. Your sex organs and gender identity don't match, because difference developing.

For me it would also be about having a male identity and being viewed as a man instead of a woman. To look the way I feel on the inside and express myself through male clothing.

I have an older brother and an older sister, a younger brother and a younger sister. I'm smack dab in the middle. I  am likely on the autism spectrum, but have not pursued it so who knows. I have mild bi-polar, as I don't get too manic very often. Depression can be bad. I also have GAD and have suffered with anxiety for my whole life. My siblings have battled anxiety, depression, heavy drug and alcohol use, and many mental illnesses including schizophrenia and bi-polar.

I'm the oldest and only have one biological sibling and he is 8 1/2 years younger. I was exposed to DES and he was't. We are both in the ADHD/Aspergers spectrum.

I was born second i have high functioning autism to be exact but i often consider it Aspergers
I have a bunch of other learning disability's. 

I've heard of studies where the youngest in certain groups were the most likely to be gay. I am the baby of the family. In my group we have first borns, babies, in tweeners.

I once read "The Birth Order Book" by Dr. Kevin Leman. Amazingly, when I opened it in the library to the chapter on "The Baby" it started with "If you are the baby of the family you most likely opened this book up to this chapter first......"  I was hooked. BTW - It is a great read.

Part of what I learned from it was it is not birth order but also spacing between births and the genders that come into play for various traits