10

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 is freely available: Physiological variations in thyroid hormones: physiological and pathophysiological considerations. There is a section on circadian and ...


9

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 the diagnosis of adrenal insufficiency.1 That is because cortisol varies according to a circadian rhythm (i.e. with your body's sleep-wake cycle). The x ...


9

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 endogenous hormones including epinephrine and norepinephrine, and medications that are adrenergic agonists. Colloquially, people might say "adrenaline" to ...


8

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 increased oiliness of the skin and hair. High level of testosterone con also lead to infertility and are commonly seen in polycystic ovarian syndrome. There're side-...


7

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 elevated levels in salivary samples suggesting the body adapted to it. Long term (six months) melatonin in mice improved spatial learning and memory and also ...


7

Well regular sleeping during the day might damage health. Try avoiding it if possible as research has been conducted which suggests that there is a linkage between irregular sleep and hormone production. Evidence also suggests that lack of sleep won't do you as much damage as irregular or day sleep. I suggest try changing your profession. If that isn't ...


6

This question arises from your (correct) understanding that administration of exogenous (i.e. not produced by the body) glucocorticoids (GCs) can suppress the body’s ability to produce its own GCs in the adrenal glands. In order to understand the answer, a little background is necessary. Why does the body become unable to produce cortisone? As in many ...


6

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 far, most people with apthous stomatitis are otherwise healthy. However, when someone presents with recurrent mouth ulcers, one should always inquire ...


6

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 and a frequent initial assumption is that the problem could be at any of these 3 levels instead of assuming the problem is in the thyroid gland. Thyroid serum ...


5

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 Suggested Introduction I think it is important to recognize that levels of the testosterone hormone in the male body decrease naturally in men with age. The level ...


5

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) production from the pituitary. Serotonin stimulates hypothalamic TRH production which leads to an increase in TSH production from the pituitary. Adequate ...


5

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 collect a lot of other studies on the subject, determine whether the studies were well-designed, and, if they were, review those studies and draw a conclusion from ...


5

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 prevent type 2 diabetes in PCOS patients who do not yet have it. Metformin doesn't treat PCOS itself, and it's not approved by the FDA to treat PCOS. Its use ...


5

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 women, it is also produced in the placenta. Synthetic oxytocin is bioidentical, but for obvious reasons not administered in the brain. Treatment Synthesized ...


5

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 concentration of a specific protein is somewhat more difficult than determining the concentration of a smaller molecule. Still, there are various methods for this - ...


5

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 amino acids. These are the protein or peptides hormones which are composed from a very small number of amino acids to more than 200. An example of those ...


5

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 products from a healthy person's diet. A full discussion of all the evidence for the impact of dairy in diet is beyond the scope of this answer, though, so lets ...


5

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 breakouts and aging.” Then the jury on that really isn't finished deciding: Is acne related to the ingestion of dairy products? It is not a new idea. It ...


4

Alright let's address some of those deficiencies! Vitamin-D: You produce this when you stand in the sun. Seriously. Unfortunately there isn't really good research about how long to go outside to get enough. Some sources suggest that 30 minutes twice a week is good enough. http://www.ncbi.nlm.nih.gov/pubmed/17634462?dopt=Abstract AST and the IGF growth ...


4

There seems to be some misunderstanding here, so this is going to be a long answer. Our body is very, very good at regulating several physical and chemical parameters inside itself 1. he most well known is the temperature: it does not matter if the air temperature is -50 Celsius or +50 Celsius, it will do its best to keep you between 36.5 and 37 Celsius, ...


4

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 type of error should not be in play, the tests will have been designed such that on average the tests results are correct. The latter type of error is always in ...


4

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 evidence isn't evidence of absence, you'd think some of these dozens (or rather hundreds) of studies would have noticed women not only putting on weight, but also ...


4

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 level doesn't go down as much as it should, that can point to one of several conditions that cause Cushing's syndrome (see below). There are standard and ...


4

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 use the term parathyroid-stimulating hormone with the acronym PTH or in a way that suggests they actually meant parathyroid hormone. Journal of Cell Science (...


3

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 in a liquid form (as a suspension or a solution) are meant to be refrigerated between 2 and 8 degrees Celsius (i.e. 35 and 46 degrees Fahrenheit). They must ...


3

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 ongoing infection in the polyp. This may not be medically significant, however, because it would not show active infection and a need for antibiotics. ...


3

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 miscarriages (women have not had three or more pregnancy losses before). However, in patients with three or more consecutive miscarriages immediately preceding ...


3

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 Steroid (Lipids): derived from cholesterol, like sex hormones. Amines: derived from one amino acid (not peptide) like the thyroid hormones derived from tyrosin....


3

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 because the kidneys eliminate excess amounts in the urine. In addition, there is no evidence that high intakes of dietary potassium have adverse effects. ...


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