Top 20 Doctor insights on: Side effects of low tsh levels

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What does a low TSH level mean?

What does a low TSH level mean?

Need to look at T3 (liothyronine): And free t4. Low tsh, depending on the sensitivity of the assay, indicates thyroid hyper-function. However, the suspected hyperthyroidism needs to be confirmed with high levels of T3 (liothyronine) and free t4. All lab tests need to be evaluated in the clinical context and it would be prudent to take up the issue with your doctor. ...Read more

Dr. Quang Nguyen
936 Doctors shared insights

Thyroid Stimulating Hormone (Definition)

A TSH test measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland and tells the thyroid gland to make and release the hormones thyroxine ...Read more


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Could rhodiola cause low TSH levels?

Could rhodiola cause low TSH levels?

Unlikely but...: Rhodiola is known to improve thyroid function and thus might be expected to reduce TSH levels somewhat (though more research on this is needed). However, a low TSH tends to be a sign of hyperthyroidism and, as far as I know, rhodiola is not known to stimulate the thyroid to the point of hyperthyroidism. ...Read more

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Can you tell me is 23.69 a high or low TSH level?

Can you tell me is 23.69 a high or low TSH level?

High: The normal range for a TSH usually is up to 4.5 for most labs. This is a higher than normal number. ...Read more

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Very low TSH with high normal free T4. Twitching. Changed dose. How long til levels normal out? Still twitching 2 weeks later. Had basic neuro exam.

What did you: Change the dose of? If it's thyroid replacement, it can take weeks for the level to normalize, asumming you're now on the correct dose. If it's an ANTI-thyroid drug, it can takes months to work as it only inhibits the formation of NEW thyroid hormone, not the hormone that's already been manufactured. ...Read more

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I am diagnosed with low TSH and normal T3 and T4 level...What does it mean? Please suggest me treatment...

I am diagnosed with low TSH and normal T3 and T4 level...What does it mean? Please suggest me treatment...

T3 and T4: A low TSH should not affect your thyroid glands!
If you are having a problem please see an Endocrinologist. Should not be necessary. ...Read more

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Can Lamotrigine (Lamictal) affect TSH levels? Also, what do low TSH mean (if T3 (liothyronine) and T4 are normal)?

Can Lamotrigine (Lamictal) affect TSH levels? Also, what do low TSH mean (if T3 (liothyronine) and T4 are normal)?

Not alot: Thyroid interaction is not common with Lamictal, however as with all medications for each individual that can be a possibility. As to your low TSH that is usually a resonse to elevated T3, (liothyronine) T4. Remember that there can be variations in your thyroid measurements from one time to another. How do you feel. Do you have thyoid symptoms: cold, tired, fatigued, skin or nail changes? ...Read more

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With low TSH levels hyperthyroid is off the table right? What other issues, full normal blood panel, could cause a major weight loss?

With low TSH levels hyperthyroid is off the table right? What other issues, full normal blood panel, could cause a major weight loss?

Low tsh?: Normal TSH values fall within a range. If the TSH is low, or in other words, below the lower limit of normal, it may suggest your thyroid is overactive.
When your body produces too much thyroid hormone, the brain tries to compensate by making less tsh, and therefore the levels show up low. ...Read more

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Hyperthyroidism and weight gain, can a low TSH level cause weight gain? And how would menopause effect TSH level?

Hyperthyroidism and weight gain, can a low TSH level cause weight gain? And how would menopause effect TSH level?

No: Rarely hyperthyroidism manifested by a low TSH and elevated thyroid hormones can cause increased hunger leading to weight gain. Most hyperthyroids lose (muscle) weight. Menopause has no effect on TSH levels, but as we age hypothyroidism with increased TSH becomes more likely. 20% of women on medicare have elevated TSH and have frank or subclinical hypothyroidism. ...Read more

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Can taking too much Synthroid (thyroxine) plus cytomel, therefore having a very low TSH level, cause seizures?

Can taking too much Synthroid (thyroxine) plus cytomel, therefore having a very low TSH level, cause seizures?

Possible: Both high and low thyroid states can be associated with seizures. Seizures can be seen in 5-10% of high thyroid states and even more commonly when it is due to an overdose with medication. If you are experiencing this, go to the nearest er as this condition is life-threatening and needs immediate attention. Your doctors will also search for other conditions that may be causing seizures. ...Read more

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Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Means pituitary is: A TSH of 0.28 with normal free T4 and free T3 (liothyronine) likely means the pituitary is working properly. A TSH of 0.1-0.4 is lower than the reference range, which means about 2.5% of normal people have a TSH or 0.1-0.4. Thus, one hopes she is normal. Her endocrinologist can follow and recheck her levels in 4-6 weeks to confirm that her levels are stable (TSH not dropping lower; T4 or T3 (liothyronine) not above normal). ...Read more

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Hair loss for 18 months in crown area, first due to stress, then perhaps due to very low TSH as a result of Thyroxine dose increase. Iron levels fine. Hair is now finer / softer and continues to shed - will my hair ever go back to how it was?

Hair loss for 18 months in crown area, first due to stress, then perhaps due to very low TSH as a result of Thyroxine dose increase. Iron levels fine. Hair is now finer / softer and continues to shed - will my hair ever go back to how it was?

Wrong assumptions: Iron level not relevant. "Stress" probably not a factor. Very low TSH because of overdosed thyroid probably not part of it. Thin hair on top is very common as women get older. Other meds? Birth control? Menstrual history? Pregnancies? Weight change? When you see a dermatologist be prepared to detail these items. You might be helped by spironolactone or dutasteride. ...Read more

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Could a pituitary tumor cause temporary one sided facial drooping without paralysis? Low TSH (normal T3 (liothyronine) & T4) Low ACTH. Waiting on more test results.

Could a pituitary tumor cause temporary one sided facial drooping without paralysis? Low TSH (normal T3 (liothyronine) & T4) Low ACTH. Waiting on more test results.

Facial nerve: Any structure that affects the facial nerve along its course from the brain can cause a droop. Pituitary tumor can cause droop in eye, visual changes etc. Its anatomical and the facial nerve has several branches, temporal, zygomatic, buccal, maxillary and mandibular. Good luck. Stroke, Hemifacial spasm and bells palsy other alternative possibilities. ...Read more

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What does low TSH mean?

What does low TSH mean?

ThyroidStimulatingHo: Thyroid stimulating hormone.
It is secreted by pituitary gland to make your thyroid gland produce thyroid hormone. ...Read more

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What can be the cause of low testostorone and low TSH count?

What can be the cause of low testostorone and low TSH count?

Central: If this is hypothyroidism, low TSH and low testosterone together may have a hypothalamic/hypopituitary etiology. Please discuss this with your physician. You may need a work-up for other pituitary hormone deficiencies. ...Read more

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Due to thyca can you have low TSH and high tg? Or if tg increases does the tsh?

Low TSH unlikely: Thyroid cancer usually does not cause a low TSH (unless you are taking thyroid hormone). Most thyroid cancers do not function as well as normal thyroid tissue. Elevated thyroglobulin is a nonspecific finding, seen in most disorders of the thyroid. It can serve as a tumor marker for recurrent thyroid cancer as long as the thyroid has been completely removed. High tg has nothing to do with tsh. ...Read more

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What does it mean if I have low TSH and low freet4? Both. 6

What does it mean if I have low TSH and low freet4? Both. 6

It depends: Are you taking thyroid hormone? If yes, it changes how the tests are interpreted. If you are not on thyroid medication, a low free T4 and low TSH can indicate a pituitary disorder. ...Read more

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What does it mean when you have a low TSH but you also have a low t4?

Thyroid labs: Hi. See an endocrinologist. Make sure it's a free T4 (not a TOTAL T4). If you have low TSH and a low free T4, that's compatible with pituitary disease causing hypothyroidism (so called "secondary hypothyroidism"). IF you have that (not saying you do), you need to be checked for pituitary problems and other pituitary deficiencies (adrenal, most promptly); If u have secondary hypothy, CHECK ADRENALS ...Read more

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Stress can increase tsh, but how high cortisol causes low TSH where as stress causes high cortisol production.?

Stress can increase tsh, but how high cortisol causes low TSH where as stress causes high cortisol production.?

Cortisol: This is a very complex system. In very basic terms cortisol is produced in response to stress and feeds back inhibiting production of itself (inhibiting crh and acth). Cortisol also inhibits TSH production (as well as growth hormone, estrogen, testosterone and lh production). Thus limiting the response to stress. It is though in chronic stress this feedback mechanism breaks down. ...Read more