Is it true that plastic water bottles can affect my potency and sperm quality?

Yes, this is a real concern. Phthalates, which make plastic flexible, can interfere with the hormonal system. Studies show that men who frequently come into contact with phthalates are more likely to have sperm problems, including reduced quality, motility, and count, and there is also a link to erectile dysfunction. However, these data are based on studies in cells and animals, and are not always confirmed in humans. If you notice issues with intimate health or conception, it is worth discussing this with a doctor, and also considering reducing contact with plastic, for example, by using glass or metal containers.