Nick9000 skrev:Garik skrev:Precision Nutrition fraråder kvinder at faste, hvis de kan mærke, at det ikke er behageligt. De skal, med andre ord, ikke "push through", som mænd kan/skal.
Kvinders hormonelle balance er generelt mere skrøbelig end mænd, hvilket spiller ind her.
Jeg tvivler stærkt på at fasten skulle gøre noget negativt for kvinder, som et tilsvarende energiunderskud ikke også gør. Og så er det jo ret beset ikke fasten, der er problemet.
http://www.precisionnutrition.com/inter ... ting-women
In both men and women, hypothalamic-pituitary-gonadal (HPG) axis — the cooperative functioning of three endocrine glands — acts a bit like an air traffic controller.
First, the hypothalamus releases gonadotropin releasing hormone (GnRH).
This tells the pituitary to release luteinizing hormone (LH) and follicular stimulating hormone (FSH).
LH and FSH then act on the gonads (a.k.a. testes or ovaries).
In women, this triggers the production of estrogen and progesterone — which we need to release a mature egg (ovulation) and to support a pregnancy.
In men, this triggers the production of testosterone and sperm production.
Because this chain of reactions happens on a very specific, regular cycle in women, GnRH pulses must be very precisely timed, or everything can get out of whack.
GnRH pulses seem to be very sensitive to environmental factors, and can be thrown off by fasting.
Even short-term fasting (say, three days) alters hormonal pulses in some women.
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