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Nathan Goodyear

Kent Holtorf: Long Term Weight Loss - More Than Will Power? - 0 views

www.huffingtonpost.com/...-weight-loss---m_b_192933.html

leptin reverse T3 weight loss

shared by Nathan Goodyear on 09 Mar 11 - No Cached
  • which is a major reason for the regaining of lost weight with dieting as well being the mechanism behind stress induced weight gain (it is not due to increased cortisol).
  • f greater than 10, it demonstrates there is a degree of leptin resistance contributing to an inability to lose weight
  • that it is difficult to lose weight with leptin resistance. High carbohydrate diets and in particular high-fructose corn syrup is shown to significantly increase leptin resistance and is a likely mechanism that high fructose corn syrup is associated with obesity
  • ...9 more annotations...
  • inactive thyroid hormone called thyroxine
  • it is problem inside the cell that the inactive T4 is not converted to T3 but rather to a mirror image of T3 called reverse T3. The reverse T3 has the opposite effect of T3, blocking the effects of T3 and lowering rather than increasing metabolism.
  • Studies are showing that stress and dieting (especially yo-yo dieting) can set this hormone into action as well as chronic illness such as diabetes, chronic fatigue syndrome and fibromyalgia.
  • As soon as the body senses a reduction in calories, the production of reverse T3 is stimulated to lower metabolism
  • With chronic dieting or stress, the body often stays in this "starvation mode" with elevated levels of reverse T3 and decreased levels of T3, which is a major reason for the regaining of lost weight with dieting as well being the mechanism behind stress induced weight gain (it is not due to increased cortisol).
  • which is a major reason for the regaining of lost weight with dieting as well being the mechanism behind stress induced weight gain (it is not due to increased cortisol).
  • which is a major reason for the regaining of lost weight with dieting as well being the mechanism behind stress induced weight gain (it is not due to increased cortisol).
  • Studies are showing that such standard testing will miss 80% of thyroid dysfunction
  • ree T3/reverse T3 ratio
  • Nathan Goodyear on 09 Mar 11
     
    Fantastic review by Dr. Holtorf on reverse T3, leptin, and weight loss
Nathan Goodyear

Circumventing leptin resistance for weight control - 0 views

www.ncbi.nlm.nih.gov/...PMC33319

leptin resistance weight

shared by Nathan Goodyear on 09 Mar 11 - No Cached
  • Nathan Goodyear on 09 Mar 11
     
    how to correct leptin-resistance to improve weight loss; heavy read
Nathan Goodyear

Impaired Peripheral Conversion of Thyroxine to Trhodothyronine - Annual Review of Medic... - 0 views

www.annualreviews.org/...annurev.me.28.020177.000421

hypothyroid hypothyroidism thyroxine t4 reverse t3

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • Nathan Goodyear on 08 Mar 11
     
    peripheral conversion of t4 to reverse t3
Nathan Goodyear

A Radioimmunoassay for 3,3',5'-L-Triiodothyronine (Reverse T3): Assessment of Thyroid G... - 0 views

jcem.endojournals.org/...660

reverse T3 estrogen pregnancy hypothyroid hypothyroidism

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  • Both pregnancy and estrogen administration were associated with increases in serum reverse T3 concentrations presumably because of their ability to augment thyroxine binding globulin synthesis.
  • Nathan Goodyear on 08 Mar 11
     
    oral estrogen supplementation increase reverse T3 and lowers metabolism and leads to weight gain
Nathan Goodyear

The Failure of Physiologic Doses of Reverse T3 to Effect Thyroid-Pituitary Function in ... - 0 views

jcem.endojournals.org/...478

reverse T3 free

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  • Nathan Goodyear on 08 Mar 11
     
    reverse T3 does not block T4 to T3 converson; but occupies T3 receptors and inhibits T3 stimulating receptors
Nathan Goodyear

ScienceDirect - Journal of Psychiatric Research : Neuroendocrine effects of S-adenosyl-... - 0 views

www.sciencedirect.com/science

SAMe dopamine depression

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • Our results, at least in depressed men, seem to support the hypothesis of a stimulating effect of SAMe on the dopaminergic system
  • Nathan Goodyear on 08 Mar 11
     
    SAMe stimulates dopamine secretion in depressed men
Nathan Goodyear

ScienceDirect - Psychiatry Research : High reverse T3 levels in manic and unipolar depr... - 0 views

www.sciencedirect.com/science

reverse psychiatry t3

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • measurement of reverse T3 levels as a potential tool in differential diagnosis of affective disorders
  • Nathan Goodyear on 08 Mar 11
     
    reverse T3 tool in affective disorders
Nathan Goodyear

Reverse T3 levels in affective disorders. [Psychiatry Res. 1983] - PubMed result - 0 views

www.ncbi.nlm.nih.gov/...6417704

reverse t3 free depression TSH T4

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • In the group of patients with acute major depressive disorder, however, a significant increase in reverse T3 levels and a significant decrease in T3 levels, but no significant difference in T4 or TSH levels
  • Nathan Goodyear on 08 Mar 11
     
    low free T3:elevated reverse T3 correlates with major depression and TSH and free T4 do not.
Nathan Goodyear

Extrathyroidal Conversion of Thyroxine to 3,3',5'-Triiodothyronine (Reverse-T3)and to 3... - 0 views

jcem.endojournals.org/...733

reverse T3 free T4 hypothyroid hypothyroidism extrathyroidal conversion

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  • Nathan Goodyear on 08 Mar 11
     
    reverse T3 comes from peripheral conversion from free T4
Nathan Goodyear

Free T4, Free T3, and Reverse T3 in Critically III, Thermall... : The Journal of Trauma - 0 views

journals.lww.com/...everse_T3_in_Critically.1.aspx

free reverse T3 thyroid hypothyroid hypothyroidism

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  • Significant suppression of serum concentrations of 3,5,3'-triiodothyronine (T3) and elevation of serum concentrations of 3,3',5'-triiodothyronine (rT3) were seen
  • Nathan Goodyear on 08 Mar 11
     
    low free T3: elevated reverse T3 in critically ill patients
Nathan Goodyear

Reciprocal Changes in Serum Concentrations of 3,3',5'-Triiodothyronine (Reverse T3) and... - 0 views

jcem.endojournals.org/...1043

reverse T3 free hypothyroid hypothyroidism thyroid

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • The mechanism or the biological significance of such a diversion of T4, from the normally occurring conversion to highly potent T3, to the generation of poorly calorigenic rT3 in systemic illness
  • such a change in the metabolism of T4 can be reversible.
  • Nathan Goodyear on 08 Mar 11
     
    effects of systemic illness on thyroid function: elevated Reverse T3 and low free T3
Nathan Goodyear

Thyroid Hormone Concentrations, Disease, Physical Function, and Mortality in Elderly Me... - 0 views

jcem.endojournals.org/...6403

hormone thyroid concentrations rT3 reverse T3 hypothyroid hypothyroidism

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  • High serum rT3 may result from a decreased peripheral metabolism of thyroid hormones due to the aging process itself and/or disease and may reflect a catabolic state.
  • Nathan Goodyear on 08 Mar 11
     
    elevated serum rT3 indicates tissue hypothyroidism; very different than rT3 in the pituitary, where high concentrations accumulate
Nathan Goodyear

Elsevier: Article Locator - 0 views

linkinghub.elsevier.com/...S0140673674920704

low T3 hypothyroid hypothyroidism

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • The most striking abnormality detected in 75 sick euthyroid patients was a highly significant reduction in the mean total serum-triiodothyronine (T3) levels, with most patients having total T3 levels in the hypothyroid range. The severity of the illness correlated well with the reduction in total serum-T3 levels.
  • Nathan Goodyear on 08 Mar 11
     
    low T3 in sick euthyroid clients; severity correlated with decreasing T3
Nathan Goodyear

Leptin and the pituitary-thyroid axis: a comparative study in lean, obese, hypothyroid ... - 0 views

onlinelibrary.wiley.com/...abstract

thyroid hypothyroid hypothyroidism leptin obesity overweight

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • The data are consistent with the hypothesis that leptin and the pituitary–thyroid axis interact in the euthyroid state, and that hypothyroidism reversibly increases leptin concentrations
  • Nathan Goodyear on 08 Mar 11
     
    thyroid and leptin interact to control weight
Nathan Goodyear

Serum leptin concentrations in patients with thyroid disorders - Yoshida - 2001 - Clini... - 0 views

onlinelibrary.wiley.com/...full

leptin thyroid hormone obesity overweight

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • These results indicate that thyroid hormone may play an important role in the appropriate secretion of leptin in humans.
  • Nathan Goodyear on 08 Mar 11
     
    thyroid hormone plays role in stimulating leptin secretion
Nathan Goodyear

Diagnosis and Treatment of Hypothyroidism - 0 views

www.mercola.com/...diagnosis_comp.aspx

hypothyroidism treatment diagnosis

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • Nathan Goodyear on 08 Mar 11
     
    good overall read on hypothyroidism from Dr. Mercola
Nathan Goodyear

Low Serum Triiodothyronine (T3) and Hypothyroidism in Anorexia Nervosa -- CROXSON and I... - 0 views

jcem.endojournals.org/...167

low T3 triiodothyronine hypothyroidism

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  • Nathan Goodyear on 08 Mar 11
     
    low t3 conversion implicated in Anorexia Nervosa
Nathan Goodyear

Fortnightly review: Hypothyroidism: screening and subclinical disease -- Weetman 314 (7... - 0 views

www.bmj.com/...1175.extract

hypothyroidism TSH

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • Nathan Goodyear on 08 Mar 11
     
    TSH > 2 may not be a normal in many individuals
Nathan Goodyear

Leptin serves body as energy signal | Harvard Gazette - 0 views

news.harvard.edu/...n-serves-body-as-energy-signal

leptin body energy hormones thyroid

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • replacing leptin to physiologically normal levels during fasting fully restored testosterone to baseline, indicating that leptin regulates the hypothalamic-pituitary- gonadal axis that controls the release of testosterone and estrogen
  • Leptin clearly has some effect on the thyroid hormone axis,
  • including thyroid-stimulating hormone and the free-circulating form of thyroid
  • Nathan Goodyear on 08 Mar 11
     
    Leptin regulates hypothalamic-pituitary axis; and don't forget thyroid too.
Nathan Goodyear

Study finds leptin plays a key role in women's health | Harvard Gazette - 0 views

news.harvard.edu/...ys-a-key-role-in-womens-health

leptin

shared by Nathan Goodyear on 08 Mar 11 - No Cached
  • Nathan Goodyear on 08 Mar 11
     
    Leptin improves weight and fertility in under weight women
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