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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
943 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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I had a total thyroidectomy due to cancer. My lab shows low tsh but t4 and t3 (liothyronine) levels are normal indicating correct dosage why would my tsh be low?

TSH: TSH may be low simply because your thyroid meds are doing enough to keep the TSH at a low level.
If you are feeling OK just relax and enjoy life! ...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

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27 yrs old. This years blood work showed: Low TSH, and total T-3 and free T-4 are both high. Last year's test were fine. What could thus indicate?

Mild hyperthyroidism: Unless you are taking thyroid medication (and taking too much) this could mean mild hyperthyroidism. If your doc measured TSH, FT3 and FT4, (s)he must have suspected something. Most likely cause of hyperthyroidism in a 27 yo woman is Graves disease or one of several forms of thyroiditis. You may need to see an Endocrinologist. ...Read more

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Can you have hyperthyroidism without a low tsh?

Yes: If the problem is in the pituitary or hypothalamus, you can have high tsh, high ft4 and high ft3. This is very rare but can happen. ...Read more

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What could be the reason for a low T4 and low TSH on the bloodwork?

How low?: If these were taken during a time that you were emotionally distraught, and they are not strikingly removed from the reference range (which is set so that several percent of healthies fall outside), your physician will repeat them when your life gets better. If way-low, pituitary disease is a concern. ...Read more

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I have a low TSH due to probably excess eltroxin have been hypothryroid for 25 years. Have started getting lots of skipeed beats tsh.05?

See your doctor: This problem can only be solved by seeing your doctor and being evaluated face-to-face. After a thorough examination, your doctor should be able to tell you what's wrong and what to do about it. ...Read more

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What is meant by low TSH high free t4?

Hyperthyroidism: A low TSH and high T4 is an indication of over-active thyroid (hyperthyroidism). This should be evaluated further for any potential cause and discuss treatment options with your physician. Referral to an endocrinologist may be necessary. ...Read more

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Having heel pain since one year, low TSH?

Having heel pain since one year, low TSH?

Unrelated: Heel pain is not a symptom of thyroid disease. When you say low TSH, do you mean in the range of 0.1-0.4 or less than 0.1? A slightly low TSH of 0.1 to 0.4 is usually a benign normal variation whereas a TSH of less than 0.1 could be a sign of an overactive thyroid which would require further testing and possibly treatment. ...Read more

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I have normal ft4 (12.3) and low TSH (0.005), do I still have hyperthyroidism?

I have normal ft4 (12.3) and low TSH (0.005), do I still have hyperthyroidism?

No: Not if those values are within the lab's stated and assayed normals, and if your not on any medication to lower active thyroid hormones. ...Read more

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Hair loss secondary to low tsh?

Hair loss secondary to low tsh?

Generally low: Tsh will lead to an increased tendency for hair to break due to poor protein in the hair shaft, but it's not true hair loss. It will restart growing normally when your hypothyroidism is correctly treated with the right dose of brand name T4 replacement. ...Read more

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What causes low TSH, low T4 and low T3 (liothyronine)?

See below: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, it would have helped to know the actual values. Even though all these parameters may be low, these may yet be in the normal range. ...Read more

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Low TSH high free t4? What is the cause?

Low TSH high free t4? What is the cause?

Hyperthyroidism: High ft4 and low TSH are a combination usually indicating an over active thyroid. It doesn't explain the cause which will require further testing to figure out. ...Read more

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What does borderline low TSH and T3 (liothyronine) mean?

What does borderline low TSH and T3 (liothyronine) mean?

Nothing usually: Borderline is still within the normal range. Ask the physician who ordered the test why he got both and what his/her interpretation is. ...Read more

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Does medication for low TSH hyperthyroidism cause you to gain weight?

Does medication for low TSH hyperthyroidism cause you to gain weight?

Thyroid and weight: As the medication (eg. Methimazole) normalizes your thyroid levels, your metabolic rate will return to normal. Your appetite, however, may still be in hyper-mode. Weight gain is common, but if you take care with what you eat you can minimize this. ...Read more

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What does a low TSH score of. 08 indicate? I have been takin levothyroxin for 9 years and my last blood test shows a TSH score of. 08.

What does a low TSH score of. 08 indicate? I have been takin levothyroxin for 9 years and my last blood test shows a TSH score of. 08.

Too much levothyrox?: That result is below the usual target of 0.5-5, indicating that there may be too much T4 (levothyrox) in your system. 1. the doctor who prescribes your T4 should determine whether a dose reduction is needed. 2. if you are feeling well, the first thing to do may be to repeat the test. 3. after 9 years, it is possible that your T4 requirement has indeed gone down and your dose should be lowered. ...Read more

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Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low TSH is why it was prescribed. Dose. 050mcg.

Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low TSH is why it was prescribed. Dose. 050mcg.

Synthroid (thyroxine): You must mean a borderline high TSH for an underactive thyroid. Anyhow, the thyroid does not revert back to its normal level on its own, it ages with us and needs frequent monitoring, I would suggest not to stop it, but this is something you need to discuss with your doctor who knows you best. ...Read more

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Struggling with very low TSH 0 01 for 1 yr. Compliant with levo although doc keeps lowering it. No supps etc that would cause malabsorption. Ugh!

Over replaced: As your TSH is low and you're having symptoms of hyperthyroid (i presume), the answer is simply that your dose is too high. Dropping it carefully, as your doctor is doing, should work to bring your levels back in to control. (low TSH = high thyroid). ...Read more

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Can you have low TSH with Hashimoto's (antibodies are present)?

Yes, transiently: Hashimoto's thyroiditis can go through a phase of thyroid hyperactivity early in the course of disease and that would be associated with low TSH. Sooner or later enough thyroid is destroyed that thyroid functions declines and TSH rises. ...Read more

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How can I address benign thyroid nodules and low tsh?

How can I address benign thyroid nodules and low tsh?

Need further eval: The low TSH needs to be addressed as it can cause problems for you. In the presence of thyroid nodules, you will need a thyroid uptake and scan to make sure the nodules are not producing too much thyroid hormones. Treatment then would be antithyroid drugs, radioactive iodine, or surgery. You should not be doing nothing with a low tsh. ...Read more

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What does low T4 and low TSH signify on a thyroid test?

What does low T4 and low TSH signify on a thyroid test?

Need more info: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, it would have helped to have the actual values rather than your interpretation of the results.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more

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Can a low TSH cause hair loss?

Can a low TSH cause hair loss?

Yes: A low TSH usually means that you are have a high level of thyroid hormone in your system and hyperthyroidism can be associated with hair loss. Usually the hair becomes softer and finer with hyperthyroidism as opposed to the hair loss with hypothyroidism which is usually associated with dry coarse hair. ...Read more