Cẩm nang sức khỏe

Tự kỷ: Môi trường quan trọng hơn gien

(Dân trí) - “Về nguyên nhân gây bệnh tự kỷ, yếu tố môi trường có thể đóng một vai trò quan trọng hơn so với quan niệm trước đây” là kết luận được rút ra từ nghiên cứu về di truyền học tại Mỹ.

Một nhóm nghiên cứu trường ĐH Stanford đã so sánh những trường hợp bị tự kỷ ở 54 cặp song sinh cùng trứng và 138 cặp song sinh khác trứng có chung một nửa số gien giống nhau). Ở mỗi cặp, có ít nhất là 1 trẻ bị tự kỷ.

Họ phát hiện thấy rằng những cặp song sinh cùng trứng có nguy cơ tự kỷ cao hơn những cặp song sinh khác trứng. Nhưng những cặp khác trứng lại có nguy cơ phát triển bệnh tự kỷ cao hơn so với những trẻ em trong các gia đình đã từng có anh chị em bị tự kỷ.

Theo đó, môi trường chung ở các cặp song sinh giải thích cho khoảng 55% trường hợp tự kỷ, tất nhiên, các yếu tố di truyền vẫn đóng vai trò quan trọng.

“Yếu tố môi trường đóng một vai trò quan trọng hơn so với quan niệm trước đây”, TS Joachim Hallmayer, ĐH Y Stanford (California, Mỹ), trưởng nhóm nghiên cứu kết luận.

Trong một nghiên cứu khác của phòng nghiên cứu thuộc công ty bảo hiểm Kaiser Permanente (Oakland, California, Mỹ), Lisa Croen, trưởng nhóm nghiên cứu và là GĐ Chương trình Nghiên cứu tự kỷ, cho biết: những bà mẹ có con tự kỷ có xu hướng uống thuốc chống trầm cảm trong suốt 1 năm trước khi họ mang thai nhiều gấp 2 lần so với các bà mẹ có con khỏe mạnh sau khi kiểm tra hồ sơ y tế các bà mẹ của 300 trẻ tự kỷ và 1.500 trẻ được lựa chọn ngẫu nhiên. Và nguy cơ thậm chí còn lớn hơn (cao gấp 3) khi thuốc được uống trong 3 tháng đầu thai kỳ.

Những phát hiện được đăng tải trên tạp chí Archives of General Psychiatry cho thấy có một số yếu tố trong quá trình mang thai như thuốc, hóa chất hay nhiễm bệnh có thể kích họat chứng tự kỷ ở những trẻ mà đã mang sẵn gien gây bệnh.

“Có những yếu tố gien có thể góp phần làm tăng nguy cơ tự kỷ. Chúng tôi đã có những bằng chứng rõ ràng cho thấy nguyên nhân hàng đầu gây bệnh là di truyền và các yếu tố môi trường trước khi sinh có thể đóng vai trò quan trọng trong sự phát triển của chứng tự kỷ”, Clara Lajonchere, tác giả của nghiên cứu và là chủ tịch chương trình Trẻ tự kỷ nói, cho biết.

Tự kỷ là một tập hợp của nhiều rối loạn, từ không có khả năng giao tiếp đến chậm phát triển tinh thần hay các biểu hiện nhẹ với với hội chứng Asperger. Nó ảnh hưởng tới 1/150 trẻ sinh ra tại Mỹ hay nói cách khác là chiếm 1% dân số.

Đánh giá bài viết

+ Phản ánh của bạn đọc về bài viết:

thayer.dorothy@gmail.com - I have a question. You just read this message right? That means you're now a potential customer and I can do the same thing for your business. I can blast YOUR ad to 1 million websites just like I did to yours for just $98. More pricing plans are

danny.woodd@outlook.com - Accidental overdose is the #1 cause of death for people aged 18-45 in the United States.

Narcan is a nasal spray that can reverse an opioid overdose, saving the person’s life. Our group of volunteers has compiled a website that tracks o

michaelis.marjorie92@msn.com - If you're reading this message right now then you have just proved that contact form advertising works! I can advertise your product or service to millions for just a few hundred bucks. Skype me for info: live:.cid.303294bd15a81bc7

steffan.marla@gmail.com - Hey there,

Was looking at your site today and I thought this would probably interest you.

Are you tired of traditional virtual assistants who lack the expertise to handle complex tasks? Feeling overwhelmed by the thought of diving into gener

ignacio.summy@gmail.com - Hello,

I work for Elebands.

We make ultra-thin, fashionable, all day wearable body weight bands that you put on your wrist, ankle & waist all day to burn up to 1,500 calories, and the best part is, we have bands for sports, casual and f

swartz.ernesto@gmail.com - Hello,

I was looking at your site and wanted to ask if you would be interested in getting two-hundred and fifty thousand (250,000) emails sent out within 48 hours for just $48 - we call it our 48-Special.

I’m with HiveMailers, we u

verona.hursey@hotmail.com - Hi,

I've just been on to duocphamdaphuc.vn and thought this would suit you down to the ground.

How would you like an AI assistant that can help you create high-quality videos, turn blogs into videos, and powered with a human-like voice-o

mike@mikewazera.com - I have a list of buyers that want to work with your company, but I need a message to send them. Can you let me know what you think a good pitch would be? Also, if I get you some leads that buy would you be willing to split a comission with me?

moulton.renato@gmail.com - Hello,

Would you be open to the opportunity to reach out to a staggering 1.25 million potential clients on a weekly basis through our highly effective email marketing campaign? And the best part? It's available to you at an incredibly affordabl

salvador.spillman@yahoo.com - I now offer contact form blasting service. With my DFY service you can either do a targeted blast to only websites that match your criteria or bulk blast large volumes of sites worldwide. Prices start at just $50 to reach 500,000 bulk sites. Contact

gainford.audrea@gmail.com - Uncover a Wild $61 Per Hour with Zero Effort... Generating Over $1,300+ Daily! Zero Paid Ads | No Startup Required | Instant Results https://bit.ly/3tLo7uo

taussethan@gmail.com - Hey, I noticed your website isn't using AI yet, can I send over something that I think would help?

heyitsbobbyryan@gmail.com - Hi, I noticed a few problems affecting your website on Google, is this a good place to send them?

fletcher.smith@dr2197.com - Hey I just made a video you can use to promote your website.
If you want to see it just respond with the word yes.

borrie.latashia@yahoo.com - Hello,

I work with a company that makes ultra-thin stylish body weight bands that you can wear all day with any outfit, even a dress or suit and burn 750-1500 calories a day just by going about your day.

This is not a gimmick, our bands go o

elaine.deloach@gmail.com - Hey there,

I wanted to reach out and let you know about our new service called Myaa Dialogue Agents, the latest breakthrough in artificial intelligence technology.

Our Myaa Dialogue Agents have been engineered to handle a wide range of tasks

medrano.brian@msn.com - Affordable Website Design with High Quality. Receive a complimentary quote for Free Web Designing, including a 5-page website with Free Flash, Contact Forms, and a basic Logo, all backed by our satisfaction guarantee. Enjoy UNLIMITED revisions for the pro

marximarc26@gmail.com -
Subject: Unlock Your Website's Potential with Our Keyword Analysis Tool!

Hey there,

Looking to boost your website's visibility and attract more traffic? Say goodbye to the guesswork and hello to precise keyword analysis with

carmon.becher@googlemail.com - Hey there,

Ready to take your social media presence to the next level? We've got just the thing to skyrocket your engagement and make your content go viral on platforms like TikTok and YouTube.

https://www.opus.pro/?via=f525be

Int

ameliabrown0325@gmail.com - Hi there,

We run a Youtube growth service, where we can increase your subscriber count safely and practically.

- Guaranteed: We guarantee to gain you 700+ new subscribers each month.
- Real, human subscribers who subscribe because they a

contentwriting011994@outlook.com - Hello,

I'm Abi, an English SEO copywriter and content writer. I excel in crafting blogs, articles, e-commerce product descriptions, SEO content, website content, business service descriptions, newsletter content, brochures, proofreading, social

hireonline4455@outlook.com - Hi,

My name is Rahul. I am a Data Entry Virtual Assistant. I will follow your step-by-step process and get things done for you at just $10 per hour.

I can do Online Data Entry, Medical Bill Data Entry, Copy Paste Work, Document Data E

socialmedia1145@outlook.com - Hi, This is Rana. I'm reaching out to offer my expertise in social media management, including strategic calendar planning, captivating post creation as per your business, e-commerce product promotion, SEO-friendly social media captions, and design se

braman.hattie@gmail.com - Hi there,

I've just been on duocphamdaphuc.vn and wondered if you'd ever considered writing an eBook?

Our software allows you to turn duocphamdaphuc.vn into a fully designed eBook. Just provide the content source, and the AI will do

collins.orlando@googlemail.com - Have you recently experienced a mysterious drop in website traffic?

You’re not alone. Google’s Helpful Content Update (HCU) has shaken things up, leaving many websites struggling to rank. But fear not! This comprehensive guide is here to be

emilyjones2250@gmail.com - Hi there,

We run a YouTube growth service, which increases your number of subscribers both safely and practically.

- We guarantee to gain you 700-1500+ subscribers per month.
- People subscribe because they are interested in your channel

royce.ashmore@msn.com - Hi there,

Our cutting-edge AI technology takes the hassle out of logo design, allowing you to generate a professional looking logo for duocphamdaphuc.vn in minutes.

- Generate eye-catching logos for any niche or language in 3 clicks.
- No

katelynraiden@gmail.com - Hi there,

We run a Youtube growth service, where we can increase your subscriber count safely and practically.

- Guaranteed: We guarantee to gain you 700-1500 new subscribers each month.
- Real, human subscribers who subscribe because th

ameliabrown12784@gmail.com - Hi there,

We run a YouTube growth service, which increases your number of subscribers both safely and practically.

We go beyond just subscriber numbers. We focus on attracting viewers genuinely interested in your niche, leading to long-term

jewell.shona@msn.com - Hi there,

We would like to introduce to you Robin AI, the world's first app that replaces your entire team with an AI assistant. This powerful tool generates human-like content, creates stunning designs, drives unlimited traffic, and more.
<

joannariggs94@gmail.com - Hi,

I just visited duocphamdaphuc.vn and wondered if you'd ever thought about having an engaging video to explain what you do?

Our prices start from just $195.

We have produced over 500 videos to date and work with both non-a

legrand.callum@msn.com - Hi there,

I understand that many find it challenging to grasp that SEO requires time and a strategic monthly approach. Unfortunately, very few webmasters have the patience to witness the gradual yet impactful trends that can transform their busines

star.gilbertson@gmail.com - Hello,

Would you be interested in dropping up to 2 pounds a week without hitting the gym?

Most people don’t believe this is possible, but it is, because it has been working for me and I never gain the weight back.

I work for Eleband

barbarahicks@mail.co.uk - Hi,

I've visited duocphamdaphuc.vn and was wondering if you would be interested in promoting your site to our audience of up to 30 million?
We can also leverage our 3.4 million social media followers to boost your visibility.

We hand

Cẩm nang sức khỏe

Tự kỷ: Môi trường quan trọng hơn gien

Đánh giá bài viết

Tin liên quan