AI’s are also sometimes used during PCT because of their ability to stimulate LH and FSH. However, they also lower estrogen levels and often too much during this phase. Part of the PCT plan is to allow the body to normalize and part of that is maintaining normal estrogen levels. Estrogen is not an evil hormone many men, especially steroid users often believe it is. Estrogen is extremely important for muscle building, sexual health, mental health and a host of other areas. Estrogen levels that are too high or too low, both can be very problematic.
late 13c., "restorative powers of the body, bodily processes; powers of growth;" from Old French nature "nature, being, principle of life; character, essence," from Latin natura "course of things; natural character, constitution, quality; the universe," literally "birth," from natus "born," past participle of nasci "to be born," from PIE *gene- "to give birth, beget" (see genus ).
From late 14c. as "creation, the universe;" also "heredity, birth, hereditary circumstance; essential qualities, innate disposition" (. human nature ); "nature personified, Mother Nature." Specifically as "material world beyond human civilization or society" from 1660s. Nature and nurture have been contrasted since 1874. Nature should be avoided in such vague expressions as 'a lover of nature,' 'poems about nature.' Unless more specific statements follow, the reader cannot tell whether the poems have to do with natural scenery, rural life, the sunset, the untouched wilderness, or the habits of squirrels." [Strunk & White, "The Elements of Style," 3rd ed., 1979]
It is suggested that a continued position of equipoise be taken regarding neonatal resuscitation with the cord attached. Until further evidence is available, a reasonable approach is to perform an initial evaluation with the cord attached. If clinical signs indicate a need for resuscitation (ineffective respiratory effort or bradycardia despite gentle stimulation), the cord should be clamped and respiratory support initiated as per NRP guidelines. Alternatively, resuscitation with the cord intact may be considered as part of a clinical trial, or if institutional policy, staff training and birth set-up support this practice.