11
votes
Accepted
How does ones TSH tend to vary over the course of a day?
TSH has a quite important circadian rhythm.
Most of the original research on it is not freely accessible, as open access wasn't really a thing when these studies were done, in the 80s, but this one ...
- 6,982
9
votes
Accepted
Should chronic low cortisol be treated if the patient has no symptoms?
The disease associated with low cortisol is known as adrenal insufficiency (so-called because the adrenal glands are responsible for cortisol production). Morning cortisol is not a definitive test for ...
- 4,406
9
votes
Is adrenaline a coctail of hormones, rather than one hormone?
Adrenaline = epinephrine. Different name, same chemical.
"Adrenergic receptors" is perhaps where things get more confusing. That is a family of hormone receptors (α1 α2 β1 β2...) that respond to ...
- 5,754
8
votes
Accepted
What happens to a woman if she takes testosterone?
The long-term impact of testosterone on women's health is still not clarified enough, so it's not easy to predict them exactly.
Some common side-effects of high testosterone level are acne and ...
- 186
7
votes
Accepted
What are the long-term side effects of melatonin?
In long term studies, the effects have been mixed but mild.
In hemodialysis patients, after about six months - melatonin no longer seemed to have physiologic effects but could still be detected at ...
- 696
6
votes
Accepted
What does metformin do to treat polycystic ovarian syndrome?
PCOS can make your body resistant to insulin. When your body's cells become too resistant to insulin, that's called type 2 diabetes. Metformin makes your body more sensitive to insulin, so it can help ...
- 711
6
votes
What are the causes of Chronic Diarrhea?
Chronic mouth ulcers are relatively common, especially in young people. It's called apthous stomatitis, affects at least 20% of the population, and its natural course is one of eventual remission. By ...
- 9,384
6
votes
Accepted
Could a high TSH level mean a problem with the pituitary gland?
When a physician is studying someone for a suspected disorder related to the thyroid hormones, he/she should not only study the thyroid, but evaluate the hypothalamus-pituitary-thiroid endocrine axis ...
- 206
6
votes
Accepted
Why hormone replacement (e.g. Levothyroxine) for high TSH levels when T3 and T4 levels are normal
The lab parameters you describe (slightly elevated TSH, normal T3/T4) in isolation are an indication of latent hypothyroidism.
In general, this is interpreted as a thyroid gland not functioning ...
- 6,742
5
votes
Accepted
What is the relationship between hormones and proteins?
According to this book "Endocrinology: An integrated Approach", which is freely available via the NCBI Bookshelf (http://www.ncbi.nlm.nih.gov/books/NBK20/) in Chapter 1:
Hormones can be derived from ...
- 882
5
votes
Accepted
What are the benefits of high testosterone in men?
What are the benefits of high testosterone in men?
what benefits does high testosterone actually entail?
Mental health discussion would be interesting too, if there's any
association
...
- 449
5
votes
Does hyperthyroidism affect serotonin levels?
Thyroid function and serotonin activity are highly linked. Serotonin stimulates hypothalamic TRH (Thyroid Releasing Hormone) production, leading to an increase in TSH (Thyroid Stimulating Hormone) ...
- 958
5
votes
What is normal range of Anti TPO antiodies test?
There are several reasons why we can't specify the range here on Health SE, especially for anti-TPO Ab.
The test method
Antibodies are proteins, produced by our immune system. Determining the ...
- 2,833
5
votes
Effects and side effects of artifical oxytocin
Oxytocin is mainly produced by the body in the following situations:
contractions
sex
breastfeeding
social interaction
It is primarily produced in the hypothalamus of the brain. In pregnant ...
- 6,982
5
votes
Do combined oral contraceptives cause weight gain?
The answer at the moment seems to be a clear "maybe".
There is a Cochrane review of this very topic. Combination contraceptives: effects on weight.
A Cochrane review is a study where people ...
- 6,982
5
votes
“There is a very strong correlation between consuming dairy products — such as milk — and acne, skin breakouts and aging.”
These are biologically plausible effects supported by moderate quality observational evidence. As a personal aside, I do not believe there is enough evidence for harm to recommend eliminating dairy ...
- 3,188
5
votes
“There is a very strong correlation between consuming dairy products — such as milk — and acne, skin breakouts and aging.”
If the main thrust of the question is indeed expressed in the title and tags of the question:
Q “There is a very strong correlation between consuming dairy products — such as milk — and acne, skin ...
- 6,867
5
votes
Accepted
How quickly does ACTH deficiency cause adrenal gland atrophy?
Some Endocrinology
The hypothalamic-pituitary-adrenal (HPA) axis can be summarised in this diagram, with the hormones released at each level creating a negative feedback loop with the level above.
...
- 2,974
4
votes
Accepted
Low dose and high dose dexamethason supression test
In a dexamethasone supression test, it is measured whether given the patient dexamethasone leads to lowered cortisol levels. Lowered cortisol levels are the normal response to dexamethasone; if the ...
- 6,982
4
votes
Accepted
Can pregnancy lead to growing taller?
It's possible, but don't count on it.
Amazingly, there isn't really much in the literature about this that I could find - most studies focus on maternal weight, not height. While the absence of ...
- 6,982
4
votes
Lab test result meaning
Measurements will always have measurement errors, we distinguish between systematic errors and statistical errors due to noise, or other random effects than on average are zero. Usually the former ...
- 2,250
4
votes
Does a hormone PTSH exist?
In short: It seems, there is not enough evidence to say that parathyroid-stimulating hormone secreted from the pituitary gland exists in humans.
A) Parathyroid Stimulating Hormone (PTH)
Some texts ...
- 15.8k
4
votes
Accepted
Why is adrenaline typically not prescribed as pills?
From Furukawa, C. T., & Lodewick, M. J. (2007). β-adrenergic agonists. In Allergic Diseases (pp. 335-342). Humana Press.:
Epinephrine has both α- and β-adrenergic actions, which make it the drug ...
- 13.3k
3
votes
What is the relationship between hormones and proteins?
A protein is a long folded chain of amino acids. A chain of two or more amino acids is called a peptide.
Now, hormones are grouped into three classes based on their structure:
Peptides: like insulin
...
- 144
3
votes
Accepted
Refrigeration for peptides
As I've said in the comments it depends on the specific product, so I can't really give a straight yes or no answer. But I'll give a few examples, and I hope that will help.
Peptides that are already ...
- 2,833
3
votes
Accepted
Causes of polypoid foveolar hyperplasia
Even if the CLO test comes up negative on the biopsy, you could have your blood tested to see if you are sera positive for H. pylori. This would show if you've ever been exposed rather than have an ...
- 1,846
3
votes
How does ones TSH tend to vary over the course of a day?
TSH concentration is subject to both circadian variation (i.e. a rhythm with a period of one day) and ultradian variation (i.e. faster oscillations).
This fact is illustrated by the following figure:
...
- 485
3
votes
Accepted
Usage of progesterone for recurrent miscarriages
After some research, I believe I can answer my own question, even though it is a somewhat dissatisfying one.
There is no indication that progesterone supplementation helps prevent sporadic ...
- 6,982
3
votes
Accepted
Does elevated potassium lead to elevated cortisol?
National Institutes of Health - Health Professionals Fact Sheet on Potassium
Dietary potassium
In healthy people with normal kidney function, high dietary potassium intakes do not pose a health risk ...
- 392
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