Biology Insights

Pain when pressing on the bony bumps along your spine can come from a surprising number of structures packed into a small space: the bone itself, the joints between vertebrae, the ligaments connecting them, the muscles running alongside them, or the nerves threading through them. The periosteum, the thin tissue wrapping each vertebra, is one of the most nerve-rich structures ...

Stopping and restarting total parenteral nutrition is generally safe in stable patients, and in fact the practice is routine for thousands of people on long-term home infusions. The main fear that has lingered in clinical lore since the 1970s is that abruptly switching off a high-dextrose IV drip will cause a dangerous blood-sugar crash. Multiple controlled studies have teste...

Vinegar compresses and sponge baths are a longstanding folk remedy for fever, but the evidence that they meaningfully reduce a fever is weak, and in some cases the practice carries real risks. A fever is not just skin being hot; it is a whole-body response driven by the brain resetting its internal thermostat upward. Cooling the skin with vinegar or anything else does little ...

Mild cramping at 10 weeks of pregnancy is common and, in most cases, completely harmless. The uterus is growing rapidly during this stage, ligaments are stretching, and hormonal shifts are loosening joints throughout the pelvis. A preconception cohort study found that about 85% of women reported lower abdominal cramping during early pregnancy, yet only about 27% of those wome...

Taking a multivitamin and an omega-3 supplement at the same time is safe for most people, and there is no established interaction that makes the combination dangerous. In fact, some research suggests the two may complement each other in measurable ways, particularly for cardiovascular markers like triglycerides and homocysteine. The pairing is one of the most common supplemen...