The Claim

The thyroid gland regulates heart rate, body temperature, sex hormone production, mood, digestion, and metabolic rate through the release of thyroid hormones.

Source: Ep.15 - Thyroid Health Explained: Reclaiming Vitality with Elle Russ | Baby, Let's Talk! Podcast

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
49score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
3 studies reviewed
In plain English

The thyroid gland releases hormones that directly control heart rate, body temperature, sex hormone levels, mood, digestion, and metabolic rate.

See the scientific wording

The thyroid gland regulates heart rate, body temperature, sex hormone production, mood, digestion, and metabolic rate through the release of thyroid hormones.

Why this might work

Thyroid hormones enter cells throughout the body and bind to receptors in the brain and organs, which changes how the heart beats, how much heat the body makes, how fast food moves through the gut, how energy is burned, and how other hormones are made. In the brain, these hormones set the body's temperature target and control nerve signals that adjust heart rhythm. In other tissues, they turn on genes that increase energy use and influence the production of sex hormones and digestive activity.

Verified mechanismbased on 3 studies

What the research says

3 studies

  1. Study: Resting Energy Expenditure, Metabolic and Sex Hormones in Two Phases of the Menstrual and Hormonal Contraceptive Cycles

    This study found that when a woman's body produces more of a thyroid hormone called T3 during part of her menstrual cycle, her body burns slightly more energy — which supports the idea that thyroid hormones help control metabolism.

  2. Study: Hypothyroidism and Heart Rate Variability: Implications for Cardiac Autonomic Regulation

    When the thyroid doesn't make enough hormones, the heart doesn't regulate its rhythm as well, which shows that thyroid hormones directly affect heart rate — just like the claim says.

  3. Study: Hypothalamic Thyroid Hormone Receptor α1 Signaling Controls Body Temperature

    This study shows that thyroid hormones work in the brain to keep your body at the right temperature, which supports the idea that the thyroid gland controls body temperature through its hormones.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 3 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.