The first basic is you are what you eat! It is said that approximately 50 percent of men and women come with an allergy to latex. The elastic-like material that comes from the sap of rubber trees is the thing that most condoms are made from now. It has proven to be quite effective as being a defense mechanism against STD's. However, for a few, experience of Latex has been shown to be very irritating and uncomfortable. What do you do when you're allergic to latex and you also don't trust every other methods of safe sex? There are other alternatives. Both Polyurethane and Lambskin condoms are latex free. They are also thinner as opposed to typical latex condom, making sex a little more enjoyable from a sensational standpoint. The only downfall to using Lambskin and Polyurethane are: Polyurethane condoms usually fit a bit loose. You have to be extra careful when taking them off. Lambskins aren't as effective against STD's. They have tiny skin pores in them. Some STD's can certainly break through. Lambskin's aren't ideal for a non-monogamous relationship. Tubal blockage is among the serious diseases after infection, which most often because of infection including pelvic inflammatory disease. Pelvic inflammatory disease is among the most common cause of blocked fallopian tubes. Current or reputation an STD infection, specifically chlamydia or gonorrhea would also make the tubal blockage. The rate of tubal infertility has become stated to be 12% after one, 23% after two, and 53% after three instances of pelvic inflammatory disease. Even if PID is not really present, a good reputation for PID or pelvic infection raises the likelihood of blocked tubes. Blocked fallopian tubes can't permit the ovum along with the sperm converge, thus making fertilization impossible. Do genetics really matter? In my opinion from your research I have done and from personal experience it is a little of both. Yes and no per say. Each individual includes a "unique" physique and muscle density underneath what fat we have. The less amount of fat we've the more we notice certain features. If I am 5' 5" and weigh a normal 155lbs, I am most likely not likely to resemble a 6'6" 250lbs NFL linebacker, however I am planning to look awesome for my body system type. So what I am getting at is that, each of us can truly maximize what much of our potential might be with regards to a physical being. However, I recommend not wanting to compare ourselves along with other people, as the truth is always that they are the most useful they can be and we is only able to be the ideal we can be, not both.