Diagnoses are rising fast; the genetics is real and highly polygenic.
Why this topic Adult diagnoses are rising faster than any other, and so are the questions.
Counted in Europe PMC, where the title or abstract names both this topic and that rsID. The number is papers, not evidence of a cause.
BDNF
Smoking behavior
13 papers →MTHFR
Folate metabolism (MTHFR A1298C)
4 papers →MTHFR
Folate metabolism (MTHFR C677T)
4 papers →ADH1B
Alcohol metabolism speed
2 papers →OPRM1
Opioid receptor sensitivity
2 papers →BTBD9
Restless legs syndrome
2 papers →GNPDA2
Obesity
1 paper →MAP2K5
Restless legs syndrome
1 paper →MEIS1
Restless legs syndrome
1 paper →BTBD9
Restless legs syndrome
1 paper →FTO
Type 2 diabetes
1 paper →Europe PMC, title and abstract only, searched for “attention deficit hyperactivity disorder”, “ADHD” alongside each published rsID. Full text was not counted: it returns every paper with an rsID buried in a supplementary table. Recounted monthly.