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Related Concept Videos

Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Hormones of the Adrenal Glands01:31

Hormones of the Adrenal Glands

Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
Signs of Puberty01:27

Signs of Puberty

Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
Hormonal Regulation01:40

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.

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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
08:34

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Published on: June 3, 2016

Androgens and obesity.

Carolyn A Allan1, Robert I McLachlan

  • 1Prince Henry's Institute, Clayton, Victoria, Australia.

Current Opinion in Endocrinology, Diabetes, and Obesity
|April 27, 2010
PubMed
Summary
This summary is machine-generated.

Obesity lowers testosterone levels in men, impacting the hypothalamo-pituitary-testicular axis. While weight loss can increase testosterone, its role in mild-moderate obesity and the benefits of testosterone therapy require further research.

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Area of Science:

  • Endocrinology
  • Metabolic Health
  • Men's Health

Background:

  • Obesity is associated with reduced serum testosterone levels in men.
  • Understanding the testosterone-adiposity relationship is crucial for clinical evaluation and testosterone therapy decisions.

Purpose of the Study:

  • To review the bi-directional relationship between testosterone and obesity in men.
  • To assess the impact of obesity on testosterone levels and the hypothalamo-pituitary-testicular axis.
  • To evaluate the role of weight loss and testosterone supplementation in managing obesity-related hormonal changes.

Main Methods:

  • Review of population and interventional data.
  • Analysis of studies examining testosterone levels in relation to body mass index.
  • Evaluation of the effects of weight loss and testosterone supplementation on body composition.

Main Results:

  • A bi-directional relationship exists between testosterone and obesity in men.
  • Obesity is linked to lower total testosterone and sex hormone binding globulin (SHBG) levels, comparable to aging.
  • Weight loss improves testosterone in massive obesity; effects in mild-moderate obesity are unclear.
  • Testosterone supplementation reduces total body fat in hypogonadal and aging men.

Conclusions:

  • Testosterone may play a role in improving body fat and distribution in obese men.
  • Lifestyle advice for sustained weight loss remains the primary management strategy.
  • Testosterone therapy is an option for obese men with confirmed androgen deficiency; more research is needed for those with low-normal levels.