All-boy families and ASD. Peachy, Jimjams?

[chipmonkey]

I have noticed, time and time again, mainly on MN that families who have children with ASD tend also to be all-boy families. Now, we all know that autism is more common in boys, along with dyslexia, dyspraxia and any other dys- you can think of! But, what I am wondering is: is the incidence of ASD higher in all-boy families than it is in families where, for example there is a boy with ASD who has one, two or three sisters and no brothers.
The reason I am asking is, that in my shallow quest for a daughter, I have come across the theory that a woman who has a diet high in calcium and magnesium is more likely to have a girl, a woman who has a diet high in salt and potassium is more likely to have a boy. I have to emphasise that I don't know how true this is, eating strawberries and cream certainly didn't get me a daughter! (But it was a nice diet! )
I have 4 sons, the eldest two have, respectively, ADD and dyspraxia, so are "on the spectrum" as such. The youngest two are apparently NT but not in school yet ( just turned 4 and 9 months) so perhaps we will have Dx's in the future?
What I am asking, I suppose, is whether my diet/genetics that predispose towards boys, also predispose towards ASD? And whether a change in diet on the mother's part would reduce the risk of ASD? Are there any studies on this?

oh, and lots of hyperemesis meds with dd1, ate shed loads of cheese when pregnant (when i could eat at all) and had emCS. dd1 had loads of jabs in the few days after birth, and by 2 years old had had a few courses of antibiotics (due to ear infections)

dd2 I avoided the hyperemesis meds, cut down on dairy and gluten (she is GF/CF), still had a CS, but she has had no jabs at all and no antibiotics.

Thanks for the link for Derrick MacFabe mrsturnip, I watched it last night and it was very interesting.

Nikos our stories sound similiar DS1 didn't actually have an infection so his antibiotics weren't actually needed. The antiboitics information by Derrick MacFabe was more related to regular courses for ear infections etc but the ones DS1 had on IV had a huge effect on his bowels at the time.

Thinking even further back, DS1 had a hyperechogenic bowel which I had regular scans for but I believe this is normally a soft marker for CF which he doesn't have. He also had hypoglycemic fits (4 I think at 2 days old) and was on a glucose drip but I'm not sure if any of these things would be relevant.

It has brought home how much I need to do something about DS1's current only-eat-gluten-and=casien-diet

this is very interesting, we have 3 childen,
twin girls who both have autism and one son who has autism, the girls were born with autism, elliot up until 15months was used by our pead to indicate a NT child, pead would say, you see how elliot brings you thing cos he wants to share them with you and other stuff like that.
elliot lost all language and other skills overnight, he developed jumping and flapping lining things up hand banging and sreaming amongest other things, i do think the MMR may well have been the trigger.
DH was quite likely AS his twin brother saw himself as AS and his mother very likely AS.

We have 5 children

DD1 NT but "highly strung" had herself tested for ASD and other things in her late teens and has some spectrum traits.

DS1 dyspraxia. No dx but not NT. Again probably on the spectrum

DS2 ADHD and dyspraxia

DS3 NT

DD2 only 23 months so who knows?

My ring finger is longer than my index finger too

Mine is definitely on my left hand but only very very marginally my right! Perhaps my left hand is DS2 and my right DS1