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  2. Sperm morphology: What does it mean? - Mayo Clinic

    Mar 12, 2025 · Most fertility experts agree that the role of sperm morphology in predicting pregnancy is not clear. And it doesn't predict lack of fertility well. Also, sperm tests don't look at …

  3. Low sperm count - Symptoms and causes - Mayo Clinic

    Oct 23, 2024 · Once sperm are made in the testicles, sperm travel in delicate tubes until they mix with semen. Then semen is released from the penis, usually during an orgasm. Issues with …

  4. Healthy sperm: Improving your fertility - Mayo Clinic

    Mar 11, 2025 · Having healthy sperm is an important part of fertility. But a variety of factors can affect sperm health. Learn about steps to take, as well as things to avoid, to keep sperm …

  5. Low sperm count - Diagnosis and treatment - Mayo Clinic

    Oct 23, 2024 · The way sperm is collected depends on your situation and wishes. Various types of ART are available. The sperm can be placed in the uterus through a tube, a process called …

  6. Sperm: How long do they live after ejaculation? - Mayo Clinic

    Mar 12, 2025 · Sperm typically can stay alive for about 3 to 5 days within the cervix, uterus and fallopian tubes. It's possible for an egg to be fertilized at any point during that time. The …

  7. Male infertility - Symptoms and causes - Mayo Clinic

    Dec 28, 2022 · Anti-sperm antibodies are immune system cells that mistakenly identify sperm as harmful invaders and attempt to eliminate them. Tumors. Cancers and nonmalignant tumors …

  8. Male masturbation: Does frequency affect male fertility?

    Jan 7, 2023 · But other research suggests that men who have normal sperm quality maintain normal sperm motility and concentrations even with daily ejaculation. Ultimately, having sexual …

  9. Stem cells: What they are and what they do - Mayo Clinic

    Mar 23, 2024 · Embryonic stem cells are taken from early-stage embryos — a group of cells that forms when eggs are fertilized with sperm at an in vitro fertilization clinic. Because human …

  10. Vasectomy - Mayo Clinic

    Mar 7, 2025 · You still ejaculate semen after a vasectomy. But it takes about 20 ejaculations before you clear out any remaining sperm. A vasectomy blocks new sperm made by the testes …

  11. Birth control: Can preejaculation fluid cause pregnancy?

    Aug 18, 2023 · Yes. It's called preejaculation fluid. It can have sperm in it. That means pregnancy can occur even when there isn't full ejaculation inside the vagina. Taking the penis out of the …

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