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Claim
Strong Support
correlational
Analysis v4

In overweight and obese young adults, eating only during an earlier part of the day is linked to lower levels of thyroid-stimulating hormone and triiodothyronine than eating later in the day or...

67
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Eating all meals early means the body goes without food for nearly 20 hours before morning, signaling a long energy shortage. The brain responds by lowering signals to the thyroid gland, reducing the production of metabolic hormones to save energy. This does not happen when meals are eaten later...

Most probable mechanism

In Simple Terms

When food is only eaten early in the day, the body fasts for longer before morning, signaling a sustained energy shortage. This causes the brain to reduce signals that tell the thyroid gland to produce metabolic hormones, lowering the body's energy use to conserve fuel.

Causal chain
1

Feeding is restricted to early hours, resulting in a prolonged fasting period of at least 19 hours before morning blood sampling.

Verified by multiple studies
which leads to
2

The extended fasting period generates a metabolic signal of energy deficit that reduces hypothalamic release of thyrotropin-releasing hormone.

Supported by evidence
which leads to
3

Lower thyrotropin-releasing hormone decreases pituitary secretion of thyroid-stimulating hormone.

Supported by evidence
which leads to
4

Reduced thyroid-stimulating hormone decreases thyroid production of triiodothyronine, lowering basal metabolic rate.

Verified by multiple studies

Less supported by current evidence, but not ruled out

In Simple Terms

When insulin levels drop due to better glucose control, the body requires less energy to process nutrients, reducing the need for thyroid hormones to maintain metabolic activity.

Causal chain
1

Early feeding aligns with peak circadian insulin sensitivity, improving glucose uptake and reducing postprandial glucose spikes.

Verified by multiple studies
which leads to
2

Lower glucose excursions reduce insulin secretion and systemic insulin resistance.

Verified by multiple studies
which leads to
3

Reduced insulin-mediated metabolic demand decreases the need for thyroid hormone-driven energy expenditure.

Supported by evidence

Evidence from Studies

Supporting (1)

67

Community contributions welcome

67

Randomized controlled trial for time-restricted eating in overweight and obese young adults

Randomized Controlled Trial
Human
2022 Sep 16

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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Source Study

Randomized controlled trial for time-restricted eating in overweight and obese young adults

Score: 67
DOI: 10.1016/j.isci.2022.104870

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