Search results for hormones

“Dr. Mattson discusses the lack of evidence to suggest that intermittent fasting impairs fertility in women or otherwise disrupts hormone balance. While no studies have been done in humans, research in rats has found that intermittent fasting does not interfere with estrous cycling, but extreme caloric restriction halts the estrous cycle.”

“However, in excess these hormones may be drivers of certain cancers. In this clip, Dr. Stuart Phillips discusses how growth hormone promotes collagen synthesis and how this might relate to muscle strength.”

“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.”

“Evidence suggests that normal diurnal variations in testosterone and growth hormone do not play a significant role in muscle protein synthesis. A meta-analysis showed that men and women achieved similar increases in muscle with resistance training, despite men having higher testosterone levels.”

“IGF-1 participates in a complex pathway known as the growth hormone/IGF-1 axis, where it exerts its role to accelerate aging. In this clip, Dr. Valter Longo explains how certain macronutrients influence the insulin/IGF-1/growth hormone axis to modulate aging in many cell types.”

“IGF-1 participates in a complex pathway known as the growth hormone/IGF-1 axis, where it exerts its role to accelerate aging. In this clip, Dr. Valter Longo explains how certain macronutrients influence the insulin/IGF-1/growth hormone axis to modulate aging in many cell types.”

Science on refined sugar: mortality, aging, brain function, memory, neuroinflammation, cancer, sex hormones, addiction & more.

Dr. Rhonda Patrick discusses xylitol safety, strategies to reduce hemoglobin A1C, klotho and dementia risk, and the timing of hormone replacement therapy.

“Insulin-like growth factor-1, or IGF-1, is a hormone that plays key roles in growth and is the key mediator of growth hormone activity. It is produced primarily in the liver, and its synthesis and release are promoted by dietary intake of protein, especially those containing the amino acids methionine and cysteine.”