One of my readers forwarded this question: “what are the chances that I will pass ADHD on to my kids?”
This is a great question, which goes right to the heart of the genetics of ADD or ADHD.
As I explained in a previous article about the cause of ADHD, ADD and ADHD are very ‘heritable’, meaning that it is a very genetic disorder.
Many twin and family studies have been done on this topic. While each study yielded slightly different results, here is a summary:
If a person has ADHD, then:
- an identical twin has a 78-92% chance of having ADHD as well.
- 25-35% of siblings have ADHD as well.
- 15-20% of the mothers have ADHD as well.
- 25-30% of the fathers have ADHD as well.
If a parent has ADHD, there is a 20-54% chance that his/her child will get ADHD as well.
If both parents have ADHD – well, I don’t know of any research statistics, but let’s just say that there is a very high chance of a child having ADHD as well.
So, to answer the specific question – if you have ADHD, and you plan to have kids, each child has about a 20-54% chance of having ADD or ADHD.