🔎 Evolutionary signals in a healthy volunteer cohort
It is a generally known fact outside this study that UK Biobank participants are often wealthier, healthier, and more educated than the baseline population.
If carriers of ID variants are less likely to volunteer for genomic studies in the first place, the true penalties of carrier status might be far steeper than what this cohort captures.
However, the authors stress their study is correlational. They note that measuring fitness via childlessness is complex, as medical conditions, societal trends, and polygenic background may be much more important for reproductive success, and this dataset is restricted entirely to European ancestry.