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Yes, low levels of both hormones could affect fertility, generally negatively. FSH stands for follicle stimulating hormone - without the constant stimulation of this hormone, a follicle will not develop to the point of being a fertile egg or oocyte. LH stands for luteinizing hormone and is the hormone responsible for causing a fertile oocyte to rupture from the ovary and travel into the Fallopian tube where it can be fertilized.
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What can cause abnormally low FSH levels?
Anorexia nervosa and disorders of the hypothalamus or pituitary gland can result in abnormally low FSH levels. Abnormal levels can also indicate: infertility hypopituitarism klinefelter syndrome (in men) turner syndrome ovarian failure
What effects would low FSH levels have on sperm production?
Follicle Stimulating Hormone stimulates follicle and egg maturation in females and stimulates sperm production and maturation in males. Therefore low levels of FSH slows spermatogenesis.
Is it true that the levels of FSH and LH increase during lactation?
No, this is not true. FSH starts to suppress during pregnancy. LH remains low throughout lactation, but begins to rise again during weaning.
What causes the peak in luteinizing hormone?
In the beginning of the menstrual cycle, LH and FSH stimulate the ovaries to make estrogen. During this time, there is a negative feedback loop, so levels of all three hormones are rather low. Eventually, as the estrogen levels slowly creep up, there comes a time when it switches from negative feedback to positive feedback (not exactly sure what the biochemical basis of this is), and LH and FSH levels skyrocket (estrogen levels go up to, but not as sharply, and there is always more LH than FSH). The LH surge causes ovulaton. The corpus luteum starts secreting progesterone, which inhibits LH and FSH secretion in a negative feedback manner, and so FSH and LH levels drop sharply.
What does not affect cholesterol levels heredity blood type eating low-fat foods or exercise?
Blood type does not affect cholesterol levels. Heredity, eating low-fat foods, and exercise all do affect cholesterol levels.
How might low levels of anxiety affect person's a ability to do simple tasks?
increase effectiveness
What part of the brain does hypoxemia affect?
Hypoxemia (low oxygen levels in the blood) will affect the entire brain.
How does hypothyroidism affect hemoglobin levels?
Having hypothyroidism can affect your hemoglobin levels because the low levels of thyroid causes the hemoglobin levels to drop too. These are also linked to B12 deficiency and macrocytic anemia.
How does progesterone play a role in a feedback mechanism?
"The corpus luteum synthesizes progesterone, estradiol, and 17-hydroxyprogesterone. The increased progesterone levels affect the thermoregulatory site in the hypothalamus and increase the core body temperature. Negative feedback from the increased release of estradiol and progesterone from the corpus luteum results in decreased serum LH and FSH levels in the luteal phase. If conception has not occurred, FSH levels increase again at the end of the luteal phase as the progesterone and estradiol levels decrease. The decrease in progesterone and estradiol levels results in shedding of the endometrium-i.e., menstruation. LH pulse frequency is high (90 minutes) and of low amplitude in the follicular phase. The pulse frequency and amplitude increase immediately before ovulation".
What are normal menopausal FSH and LH levels?
For a premenopausal woman, normal values range from 4-30 U/L or 5-20 micro-international units per milliliter. In a pregnant woman, FSH levels are too low to measure. After menopause, normal values range from 40-250 U/L
How do low pH levels affect ingested bacterial growth?
It is very acidic and might kill them.
How can fsh help produce an egg?
FSH is the major survival factor that rescues the follicles from atresia (programmed death of the somatic cells of the follicle and oocyte). In the luteal-follicle phase transition period the serum levels of progesterone and estrogen (primarily estradiol) decrease and no longer suppress the release of FSH, consequently FSH peaks at about day three (day one is the first day of menstrual flow). The cohort of small antral follicles is normally sufficiently in number to produce enough Inhibin B to lower FSH serum levels. As a woman nears perimenopause the number of small antral follicles recruited in each cycle diminishes and consequently insufficient Inhibin B is produced to fully lower FSH and the serum level of FSH begins to rise. When the follicle matures and reaches about 10 mm in diameter it starts to secrete significant amounts of estradiol. Normally in humans only one follicle becomes dominant and survives to ovulate, the remaining follicles in the cohort undergo atresia. The increase in serum estradiol levels cause a decrease in FSH production by inhibiting GnRH production in the hypothalamus. The decrease in serum FSH level causes the smaller follicles in the current cohort to undergo atresia as they lack sufficient sensitivity to FSH to survive. Occasionally two follicles reach the 10 mm stage at the same time by chance and as both are equally sensitive to FSH both survive and grow in the low FSH environment and thus two ovulations can occur in one cycle possibly leading to non identical twins.
