Citat:
Ursprungligen postat av
WordWarrior
Fetma hos kvinnor har en stor negativ effekt på fertiliteten. Så att kvinnor blir allt fetare spelar också roll:
How much does obesity affect men's fertility?
Understanding the Impact of Obesity on Male FertilityObesity significantly impacts male fertility by increasing the risk of infertility by roughly 50–60% compared to men with a healthy BMI. It acts by reducing sperm count, concentration, and motility (movement) while increasing DNA damage to sperm.
Obese men are roughly 42% more likely to have a low sperm count.
Key Impacts of Obesity on Male Fertility
Low Sperm Count/Quality: Obese men are at a 42% higher risk of having a low sperm count, and an 81% higher risk of producing no sperm at all (azoospermia).
Hormonal Imbalances: Excessive fat lowers testosterone levels and increases estrogen levels (due to increased aromatase activity), resulting in poor sperm production (hypogonadism).
Increased Sperm DNA Damage: Obesity increases oxidative stress, which leads to higher rates of sperm DNA fragmentation (damage), reducing the ability to conceive.
Physical and Reproductive Issues: Increased scrotal temperature from extra fat kills sperm, while metabolic syndrome and higher rates of erectile dysfunction can hinder conception.
Reduced Conception Rates: Obesity in men correlates with lower pregnancy rates and increased risks of miscarriage, whether trying naturally or using assisted reproductive technologies (ART).
Reversibility
Lifestyle changes, including a 5-10% weight loss through healthy diet and exercise, can significantly improve semen quality, sperm DNA integrity, and increase the likelihood of pregnancy.