This treatment helps preserve fertility by collecting either a women’s eggs or male sperm, freezing them for future use. Today, many men and women delay starting a family, but this often causes complications to natural conception. From a biological point of view, the quality and number of eggs that are available fall as women age. Fertility starts to decline in women once they reach about 35 years old. And the probability of giving birth to a healthy baby falls to below 5% once a woman is past 40. This is why preserving your fertility, or “social freezing” as it is commonly known as helps men, but especially women. It’s also offered to male and female patients facing illness who need to freeze eggs or sperm before invasive treatment. It’s very common for cancer patients to freeze their reproductive material before chemical or biological therapy.