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Progesterone (P4), sold under the brand name Prometrium among others, is a medication and naturally occurring steroid hormone. [20] It is a progestogen and is used in combination with estrogens mainly in hormone therapy for menopausal symptoms and low sex hormone levels in women.
Progestogens, also sometimes written progestins, progestagens or gestagens, [1] are a class of natural or synthetic steroid hormones that bind to and activate the progesterone receptors (PR). [ 2 ] [ 3 ] Progesterone is the major and most important progestogen in the body.
Progesterone is a progestogen, or an agonist of the nuclear progesterone receptors (PRs), the PR-A, PR-B, and PR-C. [1] In one study, progesterone showed EC 50 Tooltip half-maximal effective concentration values of 7.7 nM for the human PR-A and 8.0 nM for the human PR-B. [5] In addition to the PRs, progesterone is an agonist of the membrane progesterone receptors (mPRs), including the mPRα ...
Progesterone is used as part of hormone replacement therapy in people who have low progesterone levels, and for other reasons. For purposes of comparison with normal physiological circumstances, luteal phase levels of progesterone are 4 to 30 ng/mL, while follicular phase levels of progesterone are 0.02 to 0.9 ng/mL, menopausal levels are 0.03 to 0.3 ng/mL, and levels of progesterone in men ...
[156] [152] [151] Some research has found that oral progesterone and dydrogesterone with short-term use (<5 years) may be associated with lower risk of breast cancer relative to other progestins. [ 152 ] [ 151 ] [ 118 ] [ 156 ] In the long-term however (>5 years), oral progesterone and dydrogesterone have been associated with significantly ...
One study found that men with moderate-to-high levels of exhaustion had a 2.7-fold increased risk of heart attack within five years and a 2.25 higher risk within ten years. The study also found a ...