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Thyroid disorders change how cells produce energy—overactive thyroid increases energy production and stress, while underactive thyroid slows it down—and these changes can remain even after hormone...
Even after thyroid hormone levels return to normal with treatment, some metabolic abnormalities in fat and energy pathways remain, which may explain why some patients still feel unwell or remain at...
Even when thyroid hormone levels are within the normal range, people with mildly elevated TSH show metabolic changes similar to those with full-blown hypothyroidism, suggesting their metabolic health...
Even when thyroid hormone levels return to normal after treatment, certain fat molecules in the blood remain abnormal, indicating that the body’s metabolic health may still be at risk for heart...
Mice given thyroxine eat nearly twice as much food to keep up with their faster metabolism, but even after accounting for the energy used to digest that food, their metabolism is still much higher —...
Thyroxine doesn’t just make mice produce more heat — it changes their brain’s thermostat to a higher setting, so they maintain a warmer body temperature even when it’s cold outside.
Even though thyroxine causes a massive increase in the UCP1 protein in brown fat — over 30 times more — this does not significantly contribute to the overall rise in metabolism, meaning the hormone...
Giving mice thyroxine for three weeks raises their body temperature by 1–2°C, and even when placed in cold environments, they maintain this higher temperature — indicating their bodies are actively...
When mice are kept at a warm temperature, giving them thyroxine hormone significantly boosts their metabolic rate even if they lack a key protein (UCP1) normally involved in heat production, showing...
Fixing low iron with one IV treatment doesn’t fix memory or thinking problems in heart transplant patients, meaning other issues like medications or blood flow to the brain are likely more important...
Older heart transplant recipients may experience greater memory decline than expected for their age, but this trend was not strong enough to be certain in this study.
On average, heart transplant recipients score about half a standard deviation lower than healthy adults on tests of memory and executive function, suggesting a widespread, moderate level of cognitive...
Giving a single IV iron infusion to heart transplant patients with low iron does not improve their memory or thinking skills after six months compared to a placebo.
About one in four to nearly half of heart transplant recipients with low iron show measurable memory and thinking problems compared to healthy adults, even before any treatment is given.
In early pregnancy, total thyroid hormone levels (TT4) are similar regardless of iron status, because pregnancy naturally increases proteins that bind thyroid hormone, making TT4 an unreliable...
Pregnant women with iron deficiency anemia are more than twice as likely to have mild thyroid underactivity as women with normal iron levels, making it an important risk factor to screen for during...
The worse a pregnant woman’s iron deficiency is, the more likely her thyroid hormone levels are to be abnormal—those with full-blown anemia show the greatest thyroid disruption.
Pregnant women with severe iron deficiency anemia are more likely to have antibodies that attack the thyroid gland and show signs of mild thyroid underactivity than women with milder or no iron...
Pregnant women with severe iron deficiency anemia tend to have higher levels of thyroid-stimulating hormone and lower levels of active thyroid hormone than women with normal iron levels, indicating...
Scientists developed a reliable automated test using human DIO2 enzyme that can quickly screen tens of thousands of chemicals to find those that block this enzyme, with high accuracy and...
Eleven of the compounds tested, including the fungicide fluazinam, block all three thyroid hormone-activating enzymes equally, meaning they cannot be used to selectively control T3 levels in specific...
Ibrutinib, a cancer drug, blocks the DIO2 enzyme at low doses but starts killing cells at higher doses, making it less suitable than racecadotril for studying thyroid hormone effects without...
Racecadotril, a drug used for diarrhea, blocks the DIO2 enzyme more effectively and specifically than any other compound tested in this study, without harming cells, even at high doses, making it...
Six chemical compounds, including two approved medications, can block the human DIO2 enzyme in a test tube, reducing its ability to convert the thyroid hormone T4 into the active form T3, with some...