---
title: "Examining oxidative stress as a mechanistic link between sleep…"
description: "Oxidative stress links irregular sleep and increased cardiovascular risk in young adults with chronic anxiety, and antioxidants may help improve blood…"
url: "https://magellanlongevity.com/study/ala_redox.md"
canonical: "https://magellanlongevity.com/study/ala_redox.html"
html: "https://magellanlongevity.com/study/ala_redox.html"
type: "study"
study_key: "ala_redox"
journal: "Am J Physiol Heart Circ Physiol"
year: 2026
pmid: "41740185"
doi: "10.1152/ajpheart.00006.2026"
citations: 1
updated: 2026-09-02
author: "Gabriel Radu, DO"
author_credentials: "Physiatrist (PM&R). NY medical license 275110. NPI 1376861765."
publisher: "Magellan Longevity"
content_format: "markdown"
---

# Examining oxidative stress as a mechanistic link between sleep irregularity and cardiovascular risk

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## Citation

| Field | Value |
| --- | --- |
| Journal | Am J Physiol Heart Circ Physiol |
| Year | 2026 |
| PMID | [41740185](https://pubmed.ncbi.nlm.nih.gov/41740185/) |
| DOI | [10.1152/ajpheart.00006.2026](https://doi.org/10.1152/ajpheart.00006.2026) |
| Study key | ala_redox |

## Takeaway

Oxidative stress links irregular sleep and increased cardiovascular risk in young adults with chronic anxiety, and antioxidants may help improve blood pressure control.

## The question

Does oxidative stress mediate the link between sleep irregularity and impaired vascular function and blood pressure control in young adults with chronic anxiety?

## Hypothesis

The study hypothesized that impairments in vascular function and blood pressure control associated with sleep irregularity in young adults with chronic anxiety are driven by elevations in oxidative stress.

## Methods

Twenty-five young adults (24 ± 4 yr) with generalized anxiety disorder (GAD) or elevated GAD symptoms were divided into high and low total sleep time irregularity (TSTI) groups based on wrist-worn accelerometry. Oxidative stress (whole blood superoxide levels), vascular function (exercise-induced flow-mediated dilation), and blood pressure control (cardiovagal baroreflex sensitivity) were measured in both groups after acute supplementation with either antioxidants (alpha-lipoic acid, vitamin C, and vitamin E) or a placebo.

## Results

The high TSTI group showed significantly greater oxidative stress, lower vascular function, and lower blood pressure control. Antioxidant supplementation significantly improved oxidative stress and blood pressure control in the high TSTI group. Vascular function improved significantly with antioxidant supplementation, independent of the group.

## Conclusion

Oxidative stress is a key mechanism linking sleep irregularity and cardiovascular disease risk in young adults with chronic anxiety. Antioxidant supplementation reduced oxidative stress and normalized blood pressure control differences between groups, suggesting its role as a mediator.

## Limitations

The abstract does not explicitly state any limitations of the study.

## Verbatim from the abstract

> antioxidant supplementation with alpha-lipoic acid, vitamin C, and vitamin E reduced oxidative stress and normalized blood pressure control

## Where this study is used on Magellan

This paper is one of the citations behind the evidence grade on the pages below. Grades are assigned from the published research and are independent of affiliate commissions.

| Compound or device | Evidence grade | Graded pages |
| --- | --- | --- |
| Alpha-Lipoic Acid (ALA) | Moderate evidence | [Alpha-Lipoic Acid (ALA)](https://magellanlongevity.com/p/129.md) |

## Reference

1. **Examining oxidative stress as a mechanistic link between sleep irregularity and cardiovascular risk**
   Am J Physiol Heart Circ Physiol 2026 · [PMID 41740185](https://pubmed.ncbi.nlm.nih.gov/41740185/) · [DOI 10.1152/ajpheart.00006.2026](https://doi.org/10.1152/ajpheart.00006.2026)

   > antioxidant supplementation with alpha-lipoic acid, vitamin C, and vitamin E reduced oxidative stress and normalized blood pressure control

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## Scope and disclosures

Educational information, not medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease. Talk to your physician before starting any supplement or device, especially if you are pregnant, nursing, or taking medication.

Editorial firewall: evidence grades are assigned from the published research and are independent of any affiliate commission. As an Amazon Associate, Magellan Longevity earns from qualifying purchases.

Reviewed for accuracy by a board-certified physician (DO).