This commentary examines findings by Niven et al. on whether obesity-associated DNA methylation changes in CD4+ T lymphocytes persist after weight loss, and whether these epigenetic marks sustain inflammatory immune memory.
Obesity-induced DNA methylation patterns in CD4+ T cells were found to persist following weight loss, maintaining an inflammatory epigenetic memory and delaying immune recovery.
This is a commentary on a primary study (Niven et al.); the original study's sample size, design details, and follow-up duration are not reported here. Causal directionality between epigenetic marks and clinical immune outcomes cannot be confirmed from this abstract alone.
Weight loss alone may not fully reverse obesity-driven immune dysfunction; clinicians should consider that restoring immune homeostasis may be a distinct therapeutic goal beyond achieving weight reduction.
