Search results
Results from the WOW.Com Content Network
The Easterlin hypothesis (Easterlin 1961, 1969, 1973) states that the positive relationship between income and fertility is dependent on relative income. [1] [2] It is considered the first viable and a still leading explanation for mid-twentieth century baby booms. [3] [4]
The technique, first attempted by Steptoe and Edwards [1] and later pioneered by endocrinologist Ricardo Asch, allows fertilization to take place inside the woman's uterus. [ 2 ] With the advances in IVF the GIFT procedure is used less as pregnancy rates in IVF tend to be equal or better and do not require laparoscopy when the egg is put back.
A woman's fertility is affected by her age. The average age of a girl's first period is 12–13 (12.5 years in the United States, [4] 12.72 in Canada, [5] 12.9 in the UK [6]), but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, 50% in the third and 10% in the sixth year. [7]
From these symptoms, a woman can learn to assess her fertility without use of a computerized device. Some systems use only cervical mucus to determine fertility. Two well-known mucus-only methods are the Billings ovulation method and the Creighton Model FertilityCare System. If two or more signs are tracked, the method is referred to as a ...
First use: 1980: Failure rates (first year) Perfect use: 0.5% [1] Typical use: 3.2% [1] Usage; Reversibility: Immediate: User reminders: Accurate instruction & daily charting are key. Clinic review: None: Advantages and disadvantages; STI protection: No: Period advantages: Prediction: Weight gain: No: Benefits: Low direct cost; no side effects ...
As a result of the 1992 Fertility Clinic Success Rate and Certification Act, the CDC is required to publish the annual ART success rates at U.S. fertility clinics. [29] Assisted reproductive technology procedures performed in the U.S. has over than doubled over the last 10 years, with 140,000 procedures in 2006, [30] resulting in 55,000 births ...
The absence of fertility in children is considered a natural part of human growth and child development, as the hypothalamus in their brain is still underdeveloped and cannot release the hormones required to activate the gonads' gametes. Fertility in children before the ages of eight or nine is considered a disease known as precocious puberty.
The Billings ovulation method is a method in which women use their vaginal mucus to determine their fertility. [3] It does not rely on the presence of ovulation, rather it identifies patterns of potential fertility and obvious infertility within the cycle, whatever its length. Effectiveness, however, is not very clear. [3]