igf-1

  1. Nelson Vergel

    Fat and Meat Intake Increased IGF-1 in Men

    Dietary Fat and Carbohydrates Are Independently Associated With Circulating Insulin-Like Growth Factor 1 and Insulin-Like Growth Factor–Binding Protein 3 Concentrations in Healthy Adults Journal of Clinical Oncology 17, no. 10 (October 1999) 3291-3298. PURPOSE: To evaluate and quantify the...
  2. Nelson Vergel

    Vitamin C in Citrus Fruits Increase IGF-1 in Women

    "In conclusion, we found that women with higher intakes of citrus fruit and dietary vitamin C had higher circulating concentrations of IGF-I and lower concentrations of IGFBP-3. These results raise the possibility that higher intake of this fruit subgroup and its vitamin C constituent may be...
  3. Nelson Vergel

    Influence of IGF-1, DHEA and DHT on acne

    Arch Dermatol. 2005 Mar;141(3):333-8. Correlation between serum levels of insulin-like growth factor 1, dehydroepiandrosterone sulfate, and dihydrotestosterone and acne lesion counts in adult women. Abstract OBJECTIVES: To determine if insulin-like growth factor 1 (IGF-1) and androgen...
  4. P

    Igf-1

    Just had my consultation with Defy and I can't wait to get started with 2 x injections weekly of test plus HCG and supplementing with DHEA. Dr Saya noticed that my IGF-1 level is in range but on the low end, he suggested supplementing with L-Argenine before bed, and before the gym. 400-500mg...
  5. Nelson Vergel

    Gynecomastia Associated with a Combination of High IGF-1 and Estradiol In Adolescents

    A Longitudinal Study of Growth, Sex Steroids and Insulin-like Growth Factor I in boys with Physiological Gynecomastia Physiological gynecomastia is common in pubertal boys and appears to be associated with increased levels of insulin like growth factor-1 (IGF-1) and pubertal growth, but not...
  6. Nelson Vergel

    DHEA increases IGF-1 in women but not in men

    DHEA has no influence on growth hormone in males but it seems to have an effect in females. Clin Endocrinol (Oxf). 2006 Nov;65(5):673-80. Dehydroepiandrosterone (DHEA) replacement reduces growth hormone (GH) dose requirement in female hypopituitary patients on GH replacement. Abstract...
  7. Nelson Vergel

    Higher IGF-1 Blood Levels Linked to Better Sexual Function in Men

    Another study from Dr Lipshultz' group that links high IGF-1 with better erectile function while having no effect on the prostate. Abstract Growth hormone (GH) supplementation may help to preserve erectile function. We assessed whether serum insulin-like growth factor 1 (IGF-1) levels, a...
  8. S

    IGF-1 levels low - how to boost?

    Been on TRT for 3+ years, very happy with it. IGF-1 levels have always been around 100. Previous Doctor had me on hgh and this boosted IGF-1 to 250 range, right where he wanted. I'm 48 and decided I should delay using hgh so I switched to Sermorelin two months ago. Just got blood work back...
  9. Nelson Vergel

    Potential Benefits of Sermorelin and growth hormone releasing peptides

    Growth Hormone Releasing Hormone, called Sermorelin - may provide a superior product for endogenous production of hGH (your own body's production of growth hormone). Unlike exogenous (injected) recombinant human growth hormone (rhGH) that causes production of the bioactive hormone IGF-1 from...
TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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