The COVID-19 pandemic was associated with a marked increase in central precocious puberty (CPP), particularly among girls, with higher odds during pandemic than pre-pandemic periods.
Pooled estimates show higher odds of central precocious puberty (CPP) during the COVID-19 pandemic compared to pre-pandemic periods, especially in girls. The evidence supports a reproducible epidemiological signal but does not establish a single causal mechanism.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
The COVID-19 pandemic was associated with a marked increase in central precocious puberty (CPP), particularly among girls, with higher odds during pandemic than pre-pandemic periods. The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
The COVID-19 pandemic was associated with a marked increase in central precocious puberty (CPP), particularly among girls, with higher odds during pandemic than pre-pandemic periods.
This conclusion is most relevant to: Children, particularly girls, during the COVID-19 pandemic compared to pre-pandemic periods.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Post-COVID-19 rise in central precocious puberty: an integrative Review. (Journal of pediatric endocrinology & metabolism : JPEM, 2026) —
How It Works
The proposed biological pathway:
- ▸Pandemic-related lockdowns increased sedentary behavior, weight gain, screen exposure, and sleep disruption
- ▸These factors may disrupt melatonin rhythms and increase psychological stress
- ▸Environmental EDCs (e.g., musk ambrette, QACs) may activate KISS1R or GnRHR signaling in experimental systems
- ▸Result: Higher odds of central precocious puberty, particularly in girls
Who Might Benefit
Evidence fit by population:
- ▸Children, particularly girls, during the COVID-19 pandemic compared to pre-pandemic periods
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Causal mechanisms remain unproven; pediatric exposure levels, internal dose, and target-tissue concentrations are not established
- ▸The review is narrative and hypothesis-generating, not a systematic meta-analysis with definitive effect sizes
Frequently Asked Questions
What is central precocious puberty (CPP)?▼
CPP is early onset of puberty due to premature activation of the hypothalamic-pituitary-gonadal axis, leading to early development of secondary sexual characteristics.
Why did CPP increase during the COVID-19 pandemic?▼
Proposed mechanisms include lifestyle changes like increased screen time, weight gain, sleep disruption, psychological stress, and exposure to environmental endocrine-disrupting chemicals, but no single cause has been proven.
Is the increase in CPP seen only in girls?▼
The abstract notes a strong female predominance in the rise of CPP during the pandemic, though boys may also be affected.
What are the proposed chemical triggers for CPP?▼
Selected compounds like musk ambrette and some quaternary ammonium compounds (QACs) can activate KISS1R or GnRHR signaling in lab experiments, but human evidence is lacking.
References
- 1.Chen X, Ding S. “Post-COVID-19 rise in central precocious puberty: an integrative Review..” Journal of pediatric endocrinology & metabolism : JPEM, 2026. PMID: 42515816 DOI: 10.1515/jpem-2026-0331