
Vitamin D toxicity: What if you get too much? - Mayo Clinic
Feb 20, 2025 · Vitamin D toxicity is a rare condition that happens when too much vitamin D is in the body. The condition can have serious effects on health. Another name for it is …
Too much vitamin C: Is it harmful? - Mayo Clinic
Feb 20, 2025 · Vitamin C is an essential nutrient, but you can get too much of it. If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day. The recommended …
Muriel M. Schornack, O.D. - Mayo Clinic
This content does not have an English version. Dr. Muriel Schornack is a board-certified optometrist. She holds fellowships from the American Academy of Optometry and the Scleral …
Dehydration - Symptoms & causes - Mayo Clinic
May 2, 2025 · Thirst isn't always a good way to tell if the body needs water. Many people, mainly older adults, don't feel thirsty until they're dehydrated. That's why it's important to increase …
Drug addiction (substance use disorder) - Mayo Clinic
Jun 20, 2025 · Overview Drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and leads to an inability to control the use of a legal or …
Adult attention-deficit/hyperactivity disorder (ADHD) - Mayo Clinic
Jan 25, 2023 · This mental health disorder includes a combination of persistent problems, such as difficulty paying attention, hyperactivity and impulsive behavior.
Melatonin side effects: What are the risks? - Mayo Clinic
Oct 28, 2022 · Melatonin is generally safe for short-term use. Unlike with many sleep medications, with melatonin you are unlikely to become dependent on it, have less response to it after …
Sickle cell anemia - Symptoms & causes - Mayo Clinic
Sep 12, 2025 · Symptoms of sickle cell anemia usually appear around 6 months of age. They vary from person to person and may change over time. Symptoms can include: Anemia. Sickle …
如何有效地在PPT中加入参考文献? - 知乎
如题。。现在看到的PPT中参考文献有两种方式的加入方法。。感觉哪种都好麻烦呀。第一种是:用论文引用的…
Diabetic ketoacidosis - Symptoms & causes - Mayo Clinic
Jul 25, 2025 · Diabetic ketoacidosis symptoms often come on quickly, sometimes within 24 hours. For some, these symptoms may be the first sign of diabetes. Symptoms might include: Being …