RESEARKA

Tensions within this outcome class reflect heterogeneity in study populations, interventions, and endpoints. Spiegeleer (2025) reports a negative cardiometabolic association in older adults, whereas Zhang (2026) documents positive pooled effects on glycemic and lipid parameters across metabolic disorder populations. Zhang (2018) presents a mixed profile with some significant lipid improvements but an unclear overall effect direction, contrasting with the uniformly positive summary estimates in Zhang (2026). Several sources are systematic reviews and meta-analyses examining outcomes in populations where statin use is a key variable, such as heart failure and aortic aneurysm (Bielecka-Dabrowa 2019, Liao 2019). Other studies directly investigate CoQ10 or ubiquinol in clinical or mechanistic contexts, including a randomized controlled trial on ovarian response in women with decreased ovarian reserve (Xu 2018) and a sub-analysis of a double-blind placebo-controlled trial on selenium and CoQ10 in elderly individuals (Alehagen 2023). The corpus also includes systematic reviews on fertility in ovarian aging (Shang 2024), dietary strategies in heart failure (Yu 2024), and the comparative bioavailability of CoQ10 formulations in healthy elderly individuals (Pravst 2020). These studies collectively provide evidence on diverse endpoints, from mortality and metabolic profiles to reproductive and inflammatory outcomes.

Citation Support

• source_1 Xu 2024
• source_2 Spiegeleer 2025
• source_3 Shang 2024
• source_4 Alehagen 2020
• source_5 Phan 2020