Search results for testosterone

“He also measures fasting glucose and hemoglobin A1c, a three-month average of glucose levels, to ensure that he does not trend toward pre-diabetes. Tim also chooses to measure free testosterone and sex hormone-binding globulin along with numerous other parameters.”

“Sex hormones mediate the body's immune response. For example, women mount stronger immune responses to vaccinations than men, possibly because estrogen enhances humoral immunity while testosterone is a suppressor.”

“The body produces vitamin D in the skin after exposure to ultraviolet light — therefore, it is not technically a vitamin. Rather it is a fat-soluble steroid hormone, similar in structure to other hormones, such as testosterone and estrogen.”

“FGF21 is a preliminary liver-brain signal in this discussion. A small human laboratory study found a robust rise in serum FGF21 after a two-hour alcohol self-administration session in 16 people with alcohol use disorder; it did not test exercise or craving treatment.”

“In this FoundMyFitness deep-dive clip, Dr. Rhonda Patrick reviews human evidence on BPA, microplastics, and reproductive health. She explains how BPA can interact with endocrine signaling and why fertility studies examine mature oocytes, implantation, testosterone, sperm count, motility, and morphology.”

“Men exposed to higher levels of phthalates also experience reduced sperm quality and lower testosterone, further impacting fertility. In women, higher phthalate exposure is associated with menstrual irregularities and an increased risk of endometriosis, a painful and fertility-threatening condition.”

“A loading-and-maintenance protocol increased serum DHT, but the study did not measure hair growth or loss. Most later studies found no meaningful change in total or free testosterone, but they generally did not measure DHT and therefore do not directly replicate the original finding.”

03:04:35 - Vitamin D: Sunlight vs. supplements & optimal levels. 03:15:40 - Is it safe for a woman who's 10 years post-menopause to do HRT? 03:20:45 - Why symptoms of low testosterone are often more important than the actual levels when deciding whether or not to go on TRT.

“Regarding testosterone, low to moderate intake may elevate testosterone levels while heavier consumption decreases it in men. Chronically, alcohol consumption reduces GnRH, LH, testosterone, and progesterone and increases estrogen/estradiol and FSH.”

“Phthalates have been shown to lower testosterone levels & block effects of testosterone on organs & tissues. Phthalates can also be passed from mother to fetus through the placenta and may result in abnormal sexual development.”