Have you been feeling irregular periods, low energy, mood changes, infertility issues, or unexplained breast discharge ? One hidden hormone could be responsible — Prolactin . Most people hear about prolactin only during pregnancy, but high prolactin levels can affect both women and men , even if they are not planning a baby. In this article, we will explain everything about prolactin in very simple words — what it is, why it increases, how to check it, problems caused by high prolactin, natural ways to reduce it at home , and safe medical treatments . What Is Prolactin? Prolactin is a hormone that mainly helps in milk production after childbirth . But its role does not stop there. It also affects: Menstrual cycle Ovulation Fertility Sexual health Mood and stress balance When prolactin stays within normal range, the body works smoothly. When it becomes too high, many problems can start silently. Where Is Prolactin Produced? Prolactin is produced by a small but powerful gland cal...
A new study in the journal Cell reveals something surprising: ancient viruses may have helped shape our bodies and brains. These viruses, which infected vertebrates millions of years ago, played a crucial role in the evolution of our nervous systems and large sizes.
Researchers focused on a substance called myelin, which coats nerve fibers and helps messages travel quickly in our bodies. They found that a gene sequence from these old viruses is essential for making myelin. This gene is now found in many animals, from mammals to fish.
Dr. Tanay Ghosh, who led the study, searched through DNA databases to find clues about how myelin evolved. He discovered a specific sequence called "RetroMyelin" that comes from these ancient viruses. When they experimented with cells, they found that knocking out this sequence stopped them from making myelin.
What's really interesting is that this RetroMyelin sequence isn't just in mammals like us – it's in all sorts of animals with backbones, from birds to fish. It seems to have appeared around the same time as jaws evolved, about 360 million years ago.
Having myelin was a big advantage for animals. It helped them react faster to danger, whether they were hunting or trying to escape. It also allowed their nerves to grow longer, which meant they could have bigger bodies.
The study suggests that these ancient viruses infected vertebrates multiple times, leading to the wide variety of animals we see today. So, these viruses weren't just making us sick – they were also shaping our evolution.
Dr. Robin Franklin, another scientist involved in the study, says that viruses aren't always bad. Sometimes they can actually help drive important changes in our bodies over time.
This discovery opens up new avenues for understanding how our bodies have evolved and how viruses have influenced our biology throughout history. It's a reminder that even the smallest things, like ancient viruses, can have a big impact on the way life on Earth has developed.
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