Success rates vary with the number of embryos transferred. However, transferring more and more embryos at one time does not increase the chance of live birth significantly, but may only increase the risk of a multiple pregnancy, and its associated risks. The impact of the number of embryos that are transferred also varies with the age of the woman.  
The take home message of these studies is that when gonadotropins are given to this patient population at a dose that doesn’t put the patient at significant risk of twins (like the 75 units in the Huang study), they are no better than oral medications (clomid and letrozole) at producing successful pregnancies. This is important because clomid and letrozole are also cheaper to purchase (hundreds vs. thousands of dollars) and easier to administer (oral rather than injectable). For this reason, many clinics have moved away from using gonadotropins in IUI cycles.
The eggs are then fertilized with sperm that has been optimized in the laboratory so that sperm with poor morphology or motility are discarded and the healthiest remain. Fertilization usually takes place through Intracytoplasmic Sperm Injection (ICSI). In this high-precision technique, the best single sperm are selected and individually microinjected into each egg.
Obesity: The obesity epidemic has recently become is a serious issue, particularly in industrialized nations. The rising number of obese individuals may be due in part to an energy-rich diet as well as insufficient physical exercise.  In addition to other potential health risks, obesity can have a significant impact on male and female fertility. BMI (body mass index) may be a significant factor in fertility, as an increase in BMI in the male by as little as three units can be associated with infertility. Several studies have demonstrated that an increase in BMI is correlated with a decrease in sperm concentration, a decrease in motility and an increase DNA damage in sperm. A relationship also exists between obesity and erectile dysfunction (ED). ED may be the consequence of the conversion of androgens to estradiol. The enzyme aromatase is responsible for this conversion, and is found primarily in adipose tissue. As the amount of adipose tissue increases, there is more aromatase available to convert androgens, and serum estradiol levels increase. Other hormones including inhibin B and leptin, may also be affected by obesity. Inhibin B levels have been reported to decrease with increasing weight, which results in decreased Sertoli cells and sperm production. Leptin is a hormone associated with numerous effects including appetite control, inflammation, and decreased insulin secretion, according to many studies. Obese women have a higher rate of recurrent, early miscarriage compared to non-obese women.
Success rates vary with the number of embryos transferred. However, transferring more and more embryos at one time does not increase the chance of live birth significantly, but may only increase the risk of a multiple pregnancy, and its associated risks. The impact of the number of embryos that are transferred also varies with the age of the woman.  

Secondary infertility is the inability to conceive a child or carry a pregnancy to full term after previously giving birth. To classify as secondary infertility, the previous birth must have occurred without help from fertility medications or treatments, like in vitro fertilization. Secondary infertility typically is diagnosed after trying unsuccessfully to conceive for six months to a year. A related condition is recurrent pregnancy loss where patients and couples are able to conceive but are unable to carry to term.

The diagnosis of infertility is often very overwhelming for patients. There is a plethora of information served to them. First is, they can conceive a child only through medical treatment. Second is, the insurmountable amount of information that is hard to comprehend. New medical jargon along with recommendations for treatments and tests that are completely unfamiliar can be very intimidating for the newly diagnosed. Indira IVF's Reproductive Specialists believe in creating a partnership with the patient, and we have found that the most successful partnerships occur when the patient is well-informed and can play an active role in their treatment. We value an open and ethical relationship with each patient in an environment that fosters trust and mutual respect, an environment where questions are welcome and encouraged.

Your doctor will also monitor whether or not the treatment led to a multiple pregnancy. IVF has a higher risk of conceiving multiples, and a multiple pregnancy carries risks for both the mother and the babies. Risks of a multiple pregnancy include premature labor and delivery, maternal hemorrhage, C-section delivery, pregnancy induced high blood pressure, and gestational diabetes.
The eggs are then fertilized with sperm that has been optimized in the laboratory so that sperm with poor morphology or motility are discarded and the healthiest remain. Fertilization usually takes place through Intracytoplasmic Sperm Injection (ICSI). In this high-precision technique, the best single sperm are selected and individually microinjected into each egg.
Treating secondary infertility, like primary infertility, will depend largely on any underlying medical conditions. Through the Couples Clinic at UW Health's Generations Fertility Care, both members of the couple undergo a routine evaluation. Since infertility is not simply a woman's problem, evaluating both members ensures the most effective treatments can be recommended.  
Whether you ultimately choose IUI or IVF, the first step is finding a Los Angeles fertility clinic that prioritizes your individual needs over a generic protocol. You need good information to make a good decision, which is why it is so important to start with an in-depth medical investigation and diagnosis. Understanding exactly which issues may be contributing to your infertility helps you and your doctor create a treatment plan which gives you the greatest chance of success.
New Brunswick provides partial funding through their Infertility Special Assistance Fund – a one time grant of up to $5,000. Patients may only claim up to 50% of treatment costs or $5,000 (whichever is less) occurred after April 2014. Eligible patients must be a full-time New Brunswick resident with a valid Medicare card and have an official medical infertility diagnosis by a physician.[150]
Risk of multiples. IUI with fertility medication carries a significant risk of multiple pregnancies, including higher-order multiples (triplets or more). A good clinic will carefully monitor your follicles to make sure that only a safe number are mature before the IUI, but they cannot entirely eliminate the risk. Recent advances in IVF (including blastocyst transfer) mean that most modern fertility clinics now transfer only one or two embryos per IVF cycle. As a result, the risk of multiple pregnancies for IVF patients is much lower than it used to be.
If you're using your partner's sperm, he'll provide a semen sample at your doctor's office or a clinic through masturbation the morning of egg retrieval. Other methods, such as testicular aspiration — the use of a needle or surgical procedure to extract sperm directly from the testicle — are sometimes required. Donor sperm also can be used. Sperm are separated from the semen fluid in the lab.
Each case of infertility is different from the other. Hence it is extremely crucial, to be honest with your doctor about all your symptoms and problems. The doctor needs to know all the details regarding your reproductive health including any previous miscarriages, or abortions if any. This helps in diagnosis and formulating a correct treatment for infertility.
Sometimes problems getting pregnant for a second or subsequent time are related to a complication that occurred in a prior pregnancy or prior to delivery (damage to the uterus, for instance). But most often, secondary infertility is caused by the same factors that would cause primary infertility — issues like advanced age, obesity, ovulation problems and so on. 
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