I interact with geneticists in my work sometimes, and based on what I know from those collaborations, this kind of report is extremely implausible to me. Most complex traits are massively polygenic, and even if you can identify all of the hundreds of genes involved in their manifestation, you're going to be predicting at most a couple percent of variation in the outcome.

If I were going to worry about this outcome, I'd worry much more about assortative mating as a cause.