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Nathan Goodyear

Influence of high-carbohydrate mixed meals with different glycemic indexes on substrate... - 0 views

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    low-glycemic index diet aids in mobilization of adipose tissue in exercise.  In this study, exercise after a low-glycemic meal resulted in a greater mobilization of adipose tissue for energy production than a high glycemic meal.  This will help  in weight loss
Nathan Goodyear

The effect of a low-carbohydrate, ketogenic diet versus a low-glycemic index diet on gl... - 0 views

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    low carb ketogenic diet outperforms low glycemic index in diabetes.
Nathan Goodyear

A low-glycemic-load diet improves symptoms in acne vulgaris patients: a randomized cont... - 0 views

  • The improvement in acne and insulin sensitivity after a low-glycemic-load diet suggests that nutrition-related lifestyle factors may play a role in the pathogenesis of acne
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    low-glycemic diet improves acne
Nathan Goodyear

Effect of a low glycemic index compared with a conventional healthy diet on polycystic ... - 0 views

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    low glycemic diet for ladies with polycystic ovaries
Nathan Goodyear

A low-glycemic index diet combined with exerc... [Am J Clin Nutr. 2010] - PubMed - NCBI - 0 views

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    low glycemic index diet improves insulin and glucose control in pre-diabetics
Nathan Goodyear

Effect of Testosterone Treatment on Glucose Metabolism in Men With Type 2 Diabetes: A R... - 0 views

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    Only the abstract available in this publication.  Good study design.  No improvement in insulin resistance, glycemic control or visceral adiposity in obese men with type II diabetes.  The levels of inclusion were TT < 346, which would not meet the criteria put forth by other studies.  This study appeared to look at border line "low T" men with obesity and type II diabetes and found no direct glycemic control improvement.  An increase in lean muscle mass and decrease in subcutaneous fat was found.
Nathan Goodyear

Metabolic effects of testosterone replacement therapy on hypogonadal men with type 2 di... - 0 views

  • up to 40% of men with T2DM have testosterone deficiency
  • Among diabetic patients, a reduction in sex hormone binding globulin levels induced by insulin resistance leads to a further decline of testosterone levels
  • low bioavailable testosterone concentration was related to decreased lean body mass and muscle strength
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  • Testosterone deficiency has a high prevalence in men with T2DM, and it is also associated with impaired insulin sensitivity, increased percentage body fat, central obesity, dyslipidemia, hypertension and cardiovascular diseases (CVD)
  • A meta-analysis of four randomized controlled trials (RCTs) showed that TRT seemed to improve glycemic control as well as fat mass in T2DM subjects with low testosterone levels and sexual dysfunction.
  • testosterone administration could increase muscle mass and strength
  • Insulin stimulates glucose uptake into muscle and adipose tissue via the Glut4 glucose transporter isoform. When insulin activates signaling via the insulin receptor, Glut4 interacts with insulin receptor substrate 1 to initialize intracellular signaling and facilitate glucose transportation into the cell
  • The benefits of TRT on glucose metabolism can mainly be explained by its influence on the insulin signaling pathway
  • Insulin resistance as assessed by, which is calculated from the equation (If*Gf/22.5, where If is fasting insulin and Gf is fasting glucose), was definitely improved by TRT after testosterone administration in three studies
  • Testosterone was observed to elevate the expression levels and stimulate translocation of Glut4 in cultured skeletal muscle cells and to upregulate Glut4 by activating insulin receptor signaling pathways in neonatal rats
  • These effects were inhibited by a dihydrotestosterone (DHT) blocker, indicating that glucose uptake may correlate with conversion of testosterone to DHT and activation of the androgen receptor.
  • TRT reduced triglyceride levels
  • TRT has been reported to have a positive effect in the decrease of total and LDL cholesterol levels and triglycerides in hypogonadal men
  • a recent meta-analysis showed that statins could significantly lower testosterone concentrations.
  • Epidemiological studies have found a negative relationship between testosterone levels and typical cardiovascular risk markers, such as body mass index, waist circumference, visceral adiposity and carotid intima-media thickness.
  • Testosterone treatment was shown to raise hemoglobin, hematocrit and thromboxane, all of which might give rise to CVD
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    Low Testosterone is a very significant problem in men with type II Diabetes.  Estimated to reach 40%, likely much higher.  They based these estimates only on T levels and sexual symptoms. Testosterone improves glycemic control primarily through Increased transcription and transloction of GLUT4 insulin receptors to the cell surface.  Inflammation reduction is also a mechanism.  Testosteorne lowers Triglycerides in the traditional lipid profile.  Studies are mixed on the other aspects of  lipids.  
Nathan Goodyear

Dietary treatment of the metabolic syndrome--the o... [Br J Nutr. 2000] - PubMed - NCBI - 0 views

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    low glycemic index diet is treatment of choice for metabolic syndrome
Nathan Goodyear

Effects of Weight Loss and Long-Term Weight Maintenance With Diets Varying in Protein a... - 0 views

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    High protein and high glycemic index intake are both associated with low grade inflammation.  An associated increase in cardiovascular risk was additionally found.
Nathan Goodyear

Testosterone deficiency and cardiovascular mortality Morgentaler A, - Asian J Androl - 0 views

  • overall mortality and CV mortality were inversely associated with serum T concentrations.
  • men with low serum T, defined as &lt; 8.7 nmol l−1 (250 ng dl−1 ), demonstrated significantly greater all-cause mortality than men with higher serum T (hazard ratio [HR]: 2.24; 95% CI: 1.41-3.57), as well as greater CV mortality
  • lower T levels were significantly associated with the presence of any CV disease
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  • more than 30 years of studies suggesting that low levels of T represent an increased risk for CV and overall mortality,
  • lower serum T concentrations also are associated with CV disease, including incident coronary artery disease [17],[18],[19] and atherosclerosis,
  • the actual rate of adverse events was only half as great in the T group (123 events in 1223 men at risk = 10.1%) as in the untreated group (1587 events in 7486 men = 21.2%)
  • The study by Vigen et al. [7] has already undergone two published corrections,
  • 29 medical societies have called for retraction of the article, asserting "gross data mismanagement and contamination," that rendered the study "no longer credible
  • Mortality in T-treated men was reduced by approximately half in treated men compared with untreated men, at 10.3% versus 20.7%, respectively
  • The mortality rate for men who received TTh was 3.4 deaths per 100 person-years, and 5.7 deaths per 100 person-years in untreated men
  • HR of 0.61 (95%CI: 0.42-0.88; P = 0.008), indicating a significant reduction in mortality with TTh
  • men in the highest prognostic MI risk quartile, treatment with TTh was associated with reduced risk
  • tripling in T prescriptions in the US over the last decade
  • a majority of observational studies have found that low endogenous serum T levels are associated with increased mortality.
  • Men who received TTh were able to exercise significantly longer without ischemia compared with men who received placebo
  • In men with congestive heart failure, those who received T demonstrated greater walking distance and other functional endpoints compared with those who received placebo
  • TTh has been shown uniformly and repeatedly to improve several known CV risk factors, including reduced fat mass, body fat percent, and waist circumference, and increased lean mass
  • improved glycemic control
  • reductions in insulin resistance.
  • the evidence strongly points to improved CV status with normal serum T or treatment with TTh in men with TD
  • analysis of health insurance claims data that reported a 36% increased rate of nonfatal MI in the 90d following receipt of a T prescription compared with the 12 prior months.
  • Comparison with men who received a prescription for a phosphodiesterase type 5 inhibitor (PDE5i) revealed no increased rate of MI following the prescription
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    Great review by Morgentaler of Testosterone and CVD.  He highlights the significant flaws in the JAMA and the NEJM articles of Testosterone therapy risks.  Morgentaler highlights the significant evidence that points to low T and increased risk of CVD. On contention I have, is Morgantaler seems to flip aside the massive uptick of Testosterone use in the US as compared to other countries.  The evidence definitely points to Testosterone therapy as being safe in those with low T, but there is definitely a problem of significant Testosterone doping that is taking place as well.
Nathan Goodyear

A Randomized Pilot Trial of a Moderate Carbohydrate Diet Compared to a Very Low Carbohy... - 0 views

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    low carb ketogenic diet, high in fat worked better in glycemic control versus DA low fat, medium carbohydrate, calorie restricted diet.
Nathan Goodyear

Treatment of Diabetes and Diabetic Complicati... [J Child Neurol. 2013] - PubMed - NCBI - 0 views

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    Only the abstract, but for Diabetics, a ketogenic diet needs to include high fat and low protein.  Especially the elimination of animal protein.  A transition to a high protein diet will reduce ketosis.  The switch to ketosis from glucose will be what improves glycemic control.  The primary increase in most ketogenic or "low carb" diets today is an increase in protein.
Nathan Goodyear

Fifty-two-week treatment with diet and exercise plus transdermal te... - PubMed - NCBI - 0 views

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    This article finds that Testosterone transdermal therapy addition to Diet and exercise improved glycemic control and reversed Metabolic Syndrome in men with low T and type II Diabetes.  This article really highlights the proper approach to therapy: combined nutrition, exercise, and Testosterone therapy, when indicated, for men with Metabolic Syndrome and/or Diabetes.  A reduction in IR, adiponectin and hsCRP was observed.
Nathan Goodyear

Dietary Insulin Load and Cancer Recurrence and Survival in Patients With Stage III Colo... - 0 views

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    New prospective study of 1023 patients finds that high-insulogenic diet, also know as a traditional American diet, high glycemic, high sugar diet... is associated with an increased risk of cancer recurrence and mortality compared to low insulogenic diet.  The authors concluded that this would be beneficial for after surgical resection in people with stage III colon cancer. My question, is why wait on the development of cancer: use a low-insulogenic diet to prevent the cancer all together or when diagnosed implement immediately.  Why wait? Treat early! Prevent!
Nathan Goodyear

Testosterone replacement therapy improves insulin resistance, glycaemic control, viscer... - 0 views

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    3 months of IM Testosterone found to improve glycemic control, improved insulin sensitivity, improved cholesterol, and aided weight loss in men with low T and type II diabetes.
Nathan Goodyear

Fifty- two-Week Treatment With Diet and Exercise Plus Transdermal Testosterone Reverses... - 0 views

  • there appears to be a positive correlation between serum testosterone levels and insulin sensitivity in men across the full spectrum of glucose tolerance (Pitteloud et al, 2005), and this relationship is at least partially direct and not fully dependent on (changes in) elements of the MetS
  • supervised D&amp;E alone led to significant improvements in testosterone concentrations, glycemic control, and components of the MetS
  • diet control, exercise, and testosterone supplementation may be beneficial in the management of men with T2D
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  • androgen-deprivation therapy in males with prostatic cancer may be associated with an increased risk for T2D, which may be caused by negative effects on insulin sensitivity
  • insulin sensitivity, measured by HOMA, improved in both groups and with a significantly greater degree when testosterone was added to supervised D&amp;E
  • Fasting insulin concentrations, a good representative of insulin sensitivity, did show a significant correlation with changes in circulating androgen levels, an observation in support of Pitteloud et al (2005), who showed a direct relationship between insulin sensitivity and circulating testosterone concentrations using the hyper-insulinemic euglycemic clamp technique
  • 52 weeks of testosterone treatment also significantly improved circulation levels of adiponectin and hsCRP, key serum markers of insulin sensitivity and hepatic steatosis
  • The changes in both adiponectin and hsCRP were significantly correlated with the therapy-induced changes in bioavailable testosterone
  • a negative correlation was found between hsCRP levels and bioavailable testosterone
  • serum PSA concentrations did not differ between the 2 treatment groups, indicating that short-term testosterone administration appears to be acceptably safe
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    Study of men with metabolic syndrome and type II Diabetes finds that diet and exercise alone improved glucose control and metabolic syndrome components by 31%.  The addition of Testosterone therapy increased this % to 81%.
Nathan Goodyear

Dietary composition in the treatment of polycystic ovary syndrome: a systematic review ... - 0 views

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    Weight loss is the best positive effect for women with PCOS.  Higher fat and protein, with a lower carb diet benefited women with PCOS.  A low Glycemic index plan benefited women with PCOS.  
Nathan Goodyear

Increased utilization of fructose has a positive effect on the development of breast ca... - 0 views

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    Cancer can utilize fructose as an equal substitute for glucose in a low glucose environment. Good reason to avoid moderate to high glycemic fruits.
Nathan Goodyear

A low-carbohydrate, ketogenic diet to treat type 2 diabetes - 0 views

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    only a small study, but ketogenic diet in those with type II DM resulted in improved glycemic control and elimination of meds in most cases.
Nathan Goodyear

Endocrinology of the Aging Male - 0 views

  • All steps beyond the formation of pregnenolone take place in the smooth endoplasmic reticulum
  • Cytochrome P450 enzyme, CYP11A is located on the inner mitochondrial membrane and catalyses the rate limiting step of pregnenolone synthesis
  • Estrogen and related steroids, thyroid hormone and insulin increase SHBG levels.
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  • SHBG decreases in response to androgens, and in the presence of hypothyroidism, and insulin resistance.
  • Plasma SHBG levels tend to increase with increasing age
  • The apparent metabolic clearance rate of testosterone is decreased in elderly as compared to younger men
  • Testosterone circulates predominantly bound to the plasma proteins SHBG and albumin, with high and low affinity respectively
  • Testosterone is secreted in a pulsatile fashion
  • Current clinical guidelines suggest at least two measurements
  • In adult men, there is a well-documented diurnal variation (particularly in younger subjects) in testosterone levels, which are highest in the early morning and progressively decline throughout the day to a nadir in the evening
  • In older men, the diurnal variation is blunted
  • it is standard practice for samples to be obtained between 0800 and 1100 h.
  • Testosterone and DHEA decline, whereas LH, FSH, and SHBG rise
  • DHT remains constant despite the decline of its precursor testosterone
  • Longitudinal studies show an average annual decline of 1–2% total testosterone levels, with decline in free testosterone more rapid because of increases in SHBG with aging
  • Massachusetts Male Aging Study (MMAS) data show DHEA, DHEAS, and Ae declining at 2–3% per year
  • DHT showed no cross-sectional age trend
  • Androstanediol glucuronide (AAG) declined cross-sectionally with age in the MMAS sample, at 0.6% per year
  • The EMAS data show that, consistent with the longitudinal findings of MMAS (Figure 1), the core hormonal pattern with increasing age is suggestive of incipient primary testicular dysfunction with maintained total testosterone and progressively blunted free testosterone associated with higher LH
    • Nathan Goodyear
       
      This author proves the point in the review of these two studies, that TT may remain constant in aging men, however, FT drops.
  • obesity impairs hypothalamic/pituitary function
  • Androgen deprivation in men with prostate cancer has been associated with increased insulin resistance, worse glycemic control, and a significant increase in risk of incident diabetes
  • Low serum testosterone is associated with the development of metabolic syndrome 116, 117 and type 2 diabetes. 118 SHBG has been inversely correlated with type 2 diabetes
  • Improvement in insulin sensitivity with testosterone treatment has been reported in healthy 121 and diabetic 122 adult men
  • In studies conducted in men with central adiposity, testosterone has been shown to inhibit lipoprotein lipase activity in abdominal adipose tissue leading to decreased triglyceride uptake in central fat depots. 123
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    great review of hormone changes associated with aging in men.
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