There are four main factors that affect fertility:
1. Age and Fertility
Fertility tends to decline with age, particularly for women. Women are most fertile in their 20s and early 30s, and fertility starts to decline significantly after the age of 35. Men's fertility also tends to decline with age, although not as significantly as women's.
2. Physical Health and Fertility
People need to be in good health in order to be fertile. Poor nutrition, unhealthy lifestyle choices like smoking or excessive alcohol consumption, certain medical conditions, and many other factors affect fertility.
3. Ovulation and Fertility
Ovulation is the release of an egg from the ovary. It's is an important factor in fertility, and if a person is not ovulating regularly, it can be more difficult for them to get pregnant.
4. Sperm Count and Fertility
A low sperm count or low quality sperm will make it more difficult for a person to create a child.
Anabolic steroids are synthetic substances that mimic the effects of the male hormone testosterone. They are often used by bodybuilders and athletes to increase muscle mass, strength, and performance.
Andropause is the natural decline in testosterone levels that occurs in men as they age. It is a normal part of the aging process and is not considered to be a disease.
Androgen deficiency is a medical condition characterized by a deficiency in androgens. Symptoms of androgen deficiency may include decreased libido, fatigue, and muscle weakness.