Understanding how female reproductive aging works using a chicken model

Another critical aspect of female reproductive aging is cellular senescence, characterized by the accumulation of senescent cells in the ovaries (Fig. 2). In aged laying hens, increased oxidative damage, apoptosis, and impaired proliferation of granulosa cells have been reported, indicating a decline in cellular function within the ovarian microenvironment [26]. And senescent cells accumulate lipofuscin aggresomes and exhibit mitochondrial calcium dysregulation, impairing energy metabolism and oocyte quality [18]. In mice, ovarian aging is associated with the accumulation of senescent cells exhibiting a senescence-associated secretory phenotype (SASP), which promotes chronic inflammation and tissue dysfunction. Transcriptomic analyses have revealed increased expression of cyclin-dependent kinase inhibitors, such as CDKN1A and CDKN2A, as well as SASP-related factors including PAI-1 and HMGB1 [18]. These changes contribute to a deteriorated ovarian niche and impaired follicular development. Therefore, targeting cellular senescence and its associated secretory phenotype may represent a promising strategy to delay reproductive aging and improve laying persistence in chickens.

Epigenetic regulation also plays a significant role in the aging of the female reproductive system (Fig. 2). Recent studies have elucidated how DNA methylation, histone modifications, and non-coding RNAs collectively influence the aging trajectory of reproductive tissues. For instance, hydroxymethylation, a modification associated with active DNA demethylation, is relatively abundant in the ovary and may play a role in regulating gene expression during aging. In chicken, H3K27ac and H3K4me1/2/3 dynamically modulate chromatin accessibility at promoters of key genes such as DHCR7, a critical enzyme in cholesterol synthesis linked to follicular selection. Estrogen-mediated epigenetic activation of DHCR7 via histone acetylation (H3K27ac, H4K16ac) and methylation (H3K4me1/2) exemplifies how hormonal signals integrate with chromatin remodeling to sustain ovarian function during early aging stages [27]. And miR-210a-5p was found to suppress RASL11B, a GTPase that activates the MAPK pathway, thereby accelerating cellular aging when dysregulated [28]. In humans, the repression of transcription factors such as NOBOX and FIGLA, which are crucial for maintaining primordial follicle quiescence, has been observed in aging ovaries, further linking epigenetic changes to the decline in ovarian reserve [18]. Moreover, the interplay between DNA methylation and other epigenetic modifications, such as histone modifications and non-coding RNAs, adds another layer of complexity to ovarian aging. For example, age-related changes in histone methylation, including trimethylation of H3K4 and H3K27, have been implicated in the transcriptional regulation of genes involved in folliculogenesis and oocyte maturation [29]. Similarly, the dysregulation of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) has been linked to altered gene expression profiles in aging ovaries, suggesting a multifaceted epigenetic network governing ovarian function [30]. The construction of competing endogenous RNA networks has further elucidated the regulatory interactions between coding and non-coding RNAs, providing a comprehensive framework for understanding the molecular mechanisms underlying ovarian aging [30].

Hormonal regulation and the interplay between reproductive and somatic aging are critical factors in female reproductive aging (Fig. 2). The intricate hormonal regulatory mechanisms in chickens exhibit remarkable parallels with those in humans, particularly in the context of reproductive physiology and neuroendocrine control. Central to this similarity is the hypothalamic-pituitary-ovarian (HPO) axis, which governs reproductive functions in both species through conserved molecular pathways. In chickens, as in mammals, gonadotropin-releasing hormone (GnRH) serves as the pivotal regulator of LH and FSH secretion from the pituitary, orchestrating gonadal steroidogenesis and follicular development [31, 32]. However, the decline in ovarian reserve and the onset of menopause are associated with reduced levels of sex hormones in human, which disrupt homeostasis and accelerate somatic aging [4]. Experimental evidence in mice has shown that blocking ovarian cyclicity can reverse age-related changes in the myometrial transcriptome, suggesting that hormonal manipulation could be a strategy to mitigate uterine aging [33].

Mitochondrial function and oxidative stress are central to the genetic regulation of ovarian aging, a process characterized by the decline in both the quantity and quality of oocytes, leading to diminished fertility in women (Fig. 2). Mitochondria, as the primary energy producers in cells, play a pivotal role in maintaining oocyte health and developmental competence. In chickens, aging oocytes exhibit significant downregulation of mitochondrially encoded subunits of respiratory chain complexes, which are critical for electron transport and adenosine triphosphate (ATP) synthesis [34, 35]. Concurrently, oxidative stress disrupts redox balance, damaging lipids, proteins, and DNA, while the downregulation of antioxidant genes (e.g., Gsto2, Msrb1) in aged oocytes diminishes cellular defenses, perpetuating a vicious cycle of oxidative damage and mitochondrial decay [36, 37]. Recent studies in chicken models prove that aged chicken oocytes display reduced mtDNA copy numbers and aberrant mitochondrial morphology, akin to findings in murine and primate models, suggesting evolutionary conservation of these mechanisms [34, 38]. In human, with advancing maternal age, mitochondrial dysfunction becomes increasingly evident, marked by reduced oxidative phosphorylation, diminished ATP production, and elevated levels of reactive oxygen species (ROS) [34, 37, 39]. These alterations not only compromise the bioenergetic capacity of oocytes but also contribute to the accumulation of oxidative damage, which further exacerbates aging. For instance, studies have shown that aged oocytes exhibit significant reductions in mtDNA content and impaired mitochondrial dynamics, such as decreased mitochondrial coverage and altered morphology, which are associated with increased ROS production and oxidative stress [36, 40].

The interplay between mitochondrial dysfunction and oxidative stress is mediated through several genetic and molecular pathways. For example, the transcription factor CREB1 has been identified as a key regulator of mitochondrial biogenesis and function in granulosa cells, which are critical for supporting oocyte development. Downregulation of CREB1 leads to reduced expression of bioenergetic-related genes, such as PRKAA1 and PRKAA2, and impairs mitochondrial function, thereby accelerating granulosa cell senescence and oocyte aging [35]. Additionally, the cofactors SIRT1 and PPARGC1A, which are involved in mitochondrial biogenesis, are downregulated in aging granulosa cells, further contributing to mitochondrial dysfunction and oxidative stress [41]. These findings underscore the importance of CREB1 and its associated pathways in maintaining mitochondrial health and delaying ovarian aging.

In conclusion, although much of the mechanistic understanding of reproductive aging has been derived from mammalian models, accumulating evidence indicates that these pathways are evolutionarily conserved and highly relevant to chickens. Integrating chicken-specific data with insights from other species will be essential for advancing our understanding of reproductive aging and for developing strategies to improve reproductive longevity in laying hens.

The entire life span of hens is a complex physiological process characterized by distinct stages: the early, peak, and late laying periods. Each stage is marked by unique physiological, metabolic, and behavioral changes that significantly influence the reproductive capacity. Understanding these changes is critical for optimizing management practices and extending the productive lifespan of laying hens [42, 43].

The early laying period, which typically begins at 18–22 weeks of age, is marked by the onset of sexual maturity and initiation of egg production. During this phase, increasing levels of circulating estrogen stimulate the formation of medullary bone, which serves as a calcium reservoir for eggshell formation [44]. The development of the reproductive system, including the ovary, oviduct, and follicles, is critical at this stage. The peak laying period, which typically occurs between 23 and 33 weeks of age, is characterized by maximum egg production. During this phase, hens exhibit high metabolic activity to support the daily laying of eggs. The late laying period, after 72 weeks of age, is marked by a significant decline in egg production. This phase is particularly challenging for the poultry industry, as hens experience physiological aging, reduced calcium mobilization, and increased susceptibility to metabolic disorders, such as osteoporosis and fatty liver disease [44, 45].

The decline in the reproductive capacity of laying hens with increasing age is influenced by multifaceted genetic regulatory mechanisms. As hens age, ovarian aging manifests through a series of physiological changes, including reduced follicular development, decreased yolk precursor synthesis, and altered endocrine profiles, all of which contribute to diminished egg-laying performance [46]. Transcriptomic analyses have revealed that aging hens exhibit significant downregulation of genes critical for yolk precursor formation, such as those involved in lipid synthesis and antioxidant defense mechanisms in the liver, which are essential for maintaining a high egg production rate. Additionally, the expression of estrogen receptors and genes associated with steroidogenesis, such as CYP19A1 and STAR, declines with age, further impairing follicular development and ovulation [47].

One key genetic factor contributing to this decline is the dysregulation of granulosa cell (GC) function, which plays a pivotal role in follicular development and atresia. In aging hens, GCs exhibit increased apoptosis and reduced proliferation, driven by the upregulation of pro-apoptotic genes such as CASP3 and the downregulation of cell cycle regulators such as CDK2 and CCND1 [20, 47]. This cellular deterioration is exacerbated by age-related DNA damage, which activates the CHK2/p53 pathway, leading to cell cycle arrest and apoptosis in prehierarchical follicles [20]. Another critical aspect of the genetic regulation of reproductive capacity is the HPO axis, which orchestrates reproductive functions through the complex interplay of hormones and neuropeptides. Aging hens exhibit altered expression of genes within the HPO axis, such as GNRH, GNRHR, and CYP11A1, which disrupt the hormonal balance necessary for follicular development and ovulation [20]. In conclusion, the decline in the reproductive capacity of aging hens is governed by a network of genetic regulatory mechanisms, including the dysregulation of granulosa cell function and hormonal imbalances within the HPO axis. Understanding these mechanisms provides valuable insights into the molecular basis of reproductive aging in poultry species.

The reproductive aging processes in laying hens and women exhibit striking parallels, offering a unique model for studying the biological mechanisms underlying age-related declines in fertility and reproductive efficiency. Both species experience a gradual reduction in reproductive capacity as they age, which is characterized by diminished ovarian function, hormonal imbalances, and increased oxidative stress. In humans, females experience a decline in fertility after the age of 37, culminating in menopause, which is driven by a reduction in ovarian follicular reserve and oocyte quality. Similarly, in laying hens, reproductive aging manifests as a decline in egg production during the late laying cycle, primarily due to ovarian aging, reduced yolk precursor synthesis, and decreased estrogen levels [48]. These shared features highlight the utility of laying hens as a model for understanding human reproductive aging, particularly in elucidating the molecular and physiological pathways involved.

One of the key similarities is the role of oxidative stress in driving reproductive senescence. In laying hens, oxidative stress accumulates with age, leading to granulosa cell dysfunction, follicular atresia, and reduced yolk precursor formation in the liver. This is mirrored in women, where oxidative stress contributes to oocyte damage, mitochondrial dysfunction, and a decline in oocyte quality. Both species exhibit a diminished capacity to counteract oxidative stress owing to age-related declines in antioxidant enzyme activity, underscoring the importance of oxidative damage in reproductive aging. Interventions targeting oxidative stress, such as the administration of antioxidants, such as lycopene in hens, have shown promise in ameliorating ovarian aging and improving reproductive outcomes [26]. In humans, vitamin C exerts multiple protective effects on ovarian cells by activating the key antioxidant transcription factor NRF2. These effects include delaying aging, inhibiting inflammation, maintaining chromatin stability, and enhancing mitochondrial function [49]. Hormonal regulation also plays a critical role in reproductive aging in both species. In laying hens, estrogen levels peak during the early laying period but decline significantly with age, leading to reduced yolk precursor synthesis and egg production [50]. Similarly, women experience a decline in estrogen levels during perimenopause, which contributes to the cessation of ovulation and the onset of menopause [51].

Despite these similarities, notable differences exist between the reproductive biology of laying hens and that of women. For instance, hens exhibit reproductive plasticity through molting, a process that temporarily halts egg production and rejuvenates the reproductive tract, leading to improved laying efficiencies. While humans do not undergo an analogous process, understanding the mechanisms underlying molting could provide insights into potential interventions to restore reproductive function in aging females. Additionally, the ability of laying hens to produce eggs daily offers a unique and reliable assay to study reproductive aging, providing a high-throughput model for evaluating anti-aging treatments.

Age-related skeletal disorders, such as osteoporosis and osteoarthritis, are prevalent in aging chickens and share mechanistic parallels with human conditions. The bipedal nature of chickens subjects their tibio-femoral joints to mechanical stresses akin to humans, making them an ideal model for studying load-bearing joint degeneration. Chronic inflammatory conditions, such as Eimeria spp. infections, disrupt bone and cartilage homeostasis in chickens, leading to reduced trabecular bone volume, increased trabecular separation, and articular cartilage thinning-phenotypes reminiscent of post-infectious osteopathies in humans. The systemic inflammation driven by parasitic infections elevates pro-inflammatory cytokines (e.g., IL-1β, IL-6) and osteoprotegerin, while reducing insulin-like growth factor 1 (IGF-1), mirroring the inflammatory bone loss observed in metabolic syndrome-associated osteoporosis [52].

Chickens are increasingly recognized as models for cardiovascular diseases and metabolic syndrome, given their susceptibility to diet-induced obesity, dyslipidemia, and insulin resistance. The high cholesterol and low choline diet model in chickens induces hyperlipidemia, hypercholesterolemia, and hepatic steatosis, closely mimicking human non-alcoholic fatty liver disease (NAFLD) and its cardiovascular complications. These metabolic disturbances are associated with elevated triglycerides and cholesterol, akin to the dyslipidemia observed in human metabolic syndrome. The chicken model also offers insights into the interplay between NAFLD and extrahepatic disorders, such as cardiovascular dysfunction, by enabling the study of comorbid conditions like viral hepatitis (e.g., HEV) and systemic inflammation [53].

Chickens exhibit spontaneous ovarian cancers that closely mimic human ovarian cancer in terms of histopathology and molecular signatures, making them an invaluable tool for investigating tumor and therapeutic interventions [54]. Furthermore, using chickens for liver cancer research is also a hotspot, which is an important approach for studying metabolic and inflammatory diseases. Recent studies have demonstrated that microplastics, an environmental pollutant, disrupt this axis in chickens, leading to intestinal barrier dysfunction, dysbiosis, and subsequent hepatic lipid metabolism disorders—a process analogous to non-alcoholic fatty liver disease and hepatocellular carcinoma in humans [55]. This model not only elucidates the mechanisms of pollutant-induced carcinogenesis but also provides a platform for testing interventions aimed at mitigating liver damage. Finally, the chicken model also excels in preclinical oncology research, particularly in evaluating immunotherapy and drug efficacy. The chorioallantoic membrane assay has been validated as a cost-effective, 3R-compliant alternative to rodent models for screening PD-1/PD-L1 inhibitors, with pembrolizumab demonstrating cross-species efficacy in blocking immune checkpoints and restoring T-cell cytotoxicity [56].

The laying hen has emerged as a uniquely valuable model for studying reproductive aging, offering translational insights into human reproductive health due to its exceptional reproductive efficiency, plasticity, and shared physiological pathways with mammals [48, 57, 58]. Unlike mammalian models, hens exhibit a daily ovulation cycle, producing an egg nearly every 24 h, which provides a high-resolution system for investigating age-related declines in reproductive function [46]. Key parallels include diminished estrogen signaling (reduced serum 17β-estradiol and estrogen receptor expression), oxidative stress in metabolic organs like the liver, and dysregulation of yolk precursor synthesis (e.g., vitellogenin and apolipoproteins), analogous to impaired follicular development and steroidogenesis in aging human ovaries [59]. Furthermore, the hen’s ability to undergo molting-a controlled fasting protocol that temporarily rejuvenates reproductive tract function and restores peak laying efficiency-provides a conceptual paradigm for understanding how temporary reproductive rest and metabolic reset may mitigate age-related reproductive decline. While humans do not undergo an analogous process, insights from molting may inform the development of interventions targeting metabolic regulation, oxidative stress, and reproductive rejuvenation [58]. Metabolomic studies in molted hens have revealed systemic rejuvenation, including reduced ‘metabolic noise’ and restored mitochondrial function, suggesting conserved mechanisms that may inspire human fertility preservation strategies, without implying direct translational application [23].

The hen model also elucidates the impact of circadian and metabolic disruptions on reproductive aging, with direct implications for human chrononutrition research. Nighttime eating in hens, despite negligible caloric contributions, accelerates reproductive decline by disrupting circadian rhythms, akin to shift-work-associated fertility impairments in women [57, 60]. This aligns with mammalian data showing that time-restricted feeding improves metabolic health and longevity, underscoring the translational potential of dietary synchronization for mitigating age-related infertility [60, 61]. Additionally, the linear cascade governing hen ovulation, where failure at any step abruptly halts reproduction, resembles the fragility of human folliculogenesis, highlighting the shared vulnerabilities of reproductive systems under aging pressures.

The hen model leverages advanced multi-omics approaches to identify conserved biomarkers. Transcriptomic analyses of uterine, liver, and intestinal tissues reveal age-related dysregulation in genes critical for eggshell formation (e.g., FGF14, COL25A1) and nutrient metabolism, paralleling human endometrial and hepatic dysfunction during aging [46, 59, 62]. Notably, lncRNAs, such as TCONS_00181492, modulate eggshell quality deterioration, offering a novel framework for studying the epigenetic regulators of reproductive aging in vertebrates [62]. The model’s scalability further enables high-throughput screening of anti-aging interventions, such as phytase supplementation, to optimize phosphorus metabolism, a strategy relevant to human bone health during menopause [63].

For human applications, the hen reproductive tract provides a tractable system for testing pharmacological or dietary interventions targeting shared pathways (e.g., estrogen signaling and oxidative stress) before clinical trials [59]. Its rapid aging trajectory and quantifiable output (egg production) accelerate translational research, while metabolic noise reduction post-molting suggests a universal biomarker for assessing rejuvenation therapies [23]. Future directions include exploring the hen’s germline epigenetics, where heterochromatin stability contrasts with somatic aging patterns, to uncover the mechanisms that preserve reproductive longevity [23]. By bridging avian and mammalian biology, the laying hen model not only advances poultry science but also pioneers actionable strategies to combat human reproductive aging, from chrononutrition to targeted epigenetic therapies [62].

In conclusion, the unique reproductive plasticity of laying hens, coupled with their physiological and molecular parallels to humans, positions them as an indispensable model for decoding and mitigating age-related fertility decline. Its integration into translational research pipelines promises to accelerate the development of interventions to extend reproductive spans in both agricultural and clinical settings in the future.

Cross-species investigations of candidate genes and intervention targets in ovarian biology among humans, mice, and laying hens have unveiled conserved and divergent molecular mechanisms governing folliculogenesis, steroidogenesis, and reproductive pathologies. Recent advances in transcriptomics and functional genomics have identified critical pathways, such as the WNT/β-catenin signaling cascade, which is implicated in ovarian differentiation across vertebrates. For instance, RNA-seq analyses of embryonic chicken gonads have revealed sexually dimorphic expression of FGFR3, CAPN5, and GPR56, which are also associated with human ovarian development and disorders such as polycystic ovary syndrome [64]. Similarly, murine studies have highlighted the role of FOXL2 in repressing male-specific genes and activating aromatase, a mechanism conserved in avian species in which FOXL2 precedes CYP19A1 expression during ovarian differentiation [64]. Technological innovations, such as in ovo electroporation in chickens and CRISPR-Cas9 in mice, have enabled the functional validation of candidate genes. For example, RSPO1 gain-of-function models in mice have demonstrated its pivotal role in granulosa cell proliferation via WNT/β-catenin activation, a pathway that is also dysregulated in human ovarian tumors. Importantly, components of the WNT/β-catenin signaling pathway have also been identified in avian ovarian development, supporting the conservation of this regulatory mechanism across species [65]. However, comparative transcriptomic analyses have revealed species-specific differences in oocyte maturation processes. For instance, studies in mammals have shown divergent degradation patterns of maternal mRNAs during meiosis, with limited overlap in transcript dynamics between species [66]. These findings highlight that, while core regulatory pathways are conserved, species-specific regulatory mechanisms exist. Therefore, integrating data from laying hens with mammalian models may provide a more comprehensive understanding of human oocyte maturation and reproductive aging.

Intervention targets have emerged from studies on mitochondrial function and oxidative stress. In mice, Mcl-1 knockout disrupts oocyte viability by impairing mitochondrial respiration and increasing ROS levels, whereas Bax deletion rescues apoptosis, highlighting the therapeutic potential of modulating BCL-2 family proteins in age-related ovarian decline [67]. Similarly, avian models exposed to the aromatase inhibitor fadrozole exhibited gonadal sex reversal, implicating estrogen signaling as a target for manipulating reproductive phenotypes in poultry and potentially human [68]. However, challenges persist in translating findings across species due to differences in follicular architecture (e.g., single dominant follicle in humans vs. hierarchical follicles in hens) and hormonal regulation. Additionally, epigenetic studies on Alzheimer’s disease have revealed methylation changes in genes such as SORL1 and BIN1, which are expressed in ovarian tissue, suggesting pleiotropic effects of neurodegenerative risk loci on reproductive aging [69]. Future directions include leveraging single-cell RNA-seq to dissect granulosa cell heterogeneity and developing organoid models to test the efficacy of cross-species gene editing. By bridging evolutionary biology and clinical research, these efforts could yield precision therapies for infertility and ovarian disorders, while optimizing poultry production through genetic selection [64, 66, 67]. In conclusion, cross-species research has illuminated both universal and species-specific ovarian mechanisms, with translational implications ranging from assisted reproductive technologies to conservation biology. However, the limited overlap in gene networks between humans and model organisms underscores the necessity of integrative approaches that combine functional assays, population genetics, and computational modeling to refine intervention strategies.

Another important limitation in the transformation process arises from the fundamental differences in reproductive strategies between mammals and poultry, namely, the distinction between viviparity and oviparity [72]. Viviparity refers to the reproductive mode in which the embryo develops within the reproductive tract of the mother and is ultimately born as a live offspring [73]. In contrast, oviparity is a reproductive mode in which females lay eggs. The evolutionary transition from oviparity to viviparity is a highly complex process that involves numerous changes in anatomy, physiology, behavior, and genetics [74, 75]. Currently, comparative studies on viviparity in mammals versus oviparity in other groups remain relatively limited, partly because of the high complexity of the evolutionary pathways of both.

Nevertheless, despite these limitations, certain physiological characteristics of laying hens still provide complementary value for translational research. For example, chickens exhibit a diurnal activity pattern and a well-defined 24-h circadian rhythm, which is comparable to that of humans [76, 77]. This makes them a useful model for investigating the interactions between circadian regulation, reproduction, and aging [57]. However, these advantages do not fully overcome the fundamental differences in reproductive biology between avian and mammalian species.

The integration of multi-omics approaches has revolutionized our understanding of the genetic and molecular mechanisms underlying female reproductive aging resistance, offering unprecedented insights into conserved and species-specific regulatory networks (Fig. 3B). Recent advancements in single-cell and bulk RNA sequencing, chromatin accessibility profiling, and metabolomics have enabled cross-species comparisons, revealing shared pathways such as DNA repair, mitochondrial dysfunction, and inflammatory responses that are critical in ovarian aging [35, 78, 79]. For instance, transcriptomic analyses in mice and humans have identified age-dependent declines in DNA repair genes (e.g., Rif1 and Paxip1) and mitochondrial-encoded oxidative phosphorylation components, which correlate with oocyte quality deterioration. These findings underscore the utility of cross-species integration in identifying conserved hallmarks of reproductive aging. However, key challenges remain in reconciling species-specific differences. For example, while mice show linear ovarian follicle depletion, humans exhibit a more abrupt menopausal transition, necessitating the careful translation of findings [18, 80]. The non-obese diabetic/severe combined immunodeficient mouse model, which recapitulates human ovarian aging phenotypes (e.g., fibrosis and reduced mtDNA copy number), has proven valuable for testing interventions such as senolytics or plasma-based therapies [80, 81]. Cross-species meta-analyses also reveal divergent epigenetic regulation: unlike somatic tissues, ovarian aging in mice shows no global DNA hypomethylation but exhibits localized changes at transposable element loci, suggesting tissue-specific epigenetic clock [18, 79]. In conclusion, multi-omics integration across species has illuminated conserved genetic regulators of female reproductive aging, while highlighting the need for context-specific validation. By combining high-resolution molecular profiling with functional assay, this approach holds promise for identifying actionable targets to mitigate age-related fertility decline and improve healthy lifespan [22, 82, 83].

The clinical translation pathway for female anti-reproductive aging interventions represents a critical frontier in precision medicine, bridging the gap between mechanistic insights into ovarian senescence and actionable therapeutic strategies (Fig. 3C). Reproductive aging in women is characterized by a complex interplay of hormonal decline, follicular depletion, and systemic aging cascades, with menopause marking a pivotal transition associated with accelerated morbidity [4, 5]. Recent advances in biomarker discovery, including genetic markers of ovarian reserve and dynamic assessments of IGF-1 signaling in oocyte quality, have enabled the earlier identification of at-risk populations, paving the way for targeted interventions [84]. However, the translational pipeline must address key challenges: the desynchronization of reproductive and somatic aging trajectories [4], the 20% accelerated mutation rate in reproductive tissue [85], and the underutilization of preventive care in high-risk groups, such as BRCA mutation carriers [86, 87]. Emerging paradigms include hormone therapy optimization and integrative models combining Mediterranean diet adherence with supervised exercise to modulate the penetrance of hereditary cancer risks. By anchoring interventions in the biological nexus of reproductive decline, from follicular depletion to systemic inflammation, this translational framework promises to redefine healthy longevity for women globally.