Skip to main content
4 votes
Accepted

How fast can a common cold progress/develop into pneumonia?

First, the definitions: A common cold (or "head cold") is a viral infection of the nose and throat. Pneumonia is an infection of the lungs. Tracheitis and bronchitis can be refered as a "chest cold" ...
Jan's user avatar
  • 15.9k
3 votes

How fast is "too fast" for Uric stones?

The only weight loss method I've heard that increases the risk of kidney stones is bariatric surgery (PubMed, 2015). Here's a recommendation to prevent gallstones (NIDDK.gov, pdf): Depending on ...
Jan's user avatar
  • 15.9k
2 votes

How can liquids such as oral contrast agents coat the intestinal tract so quickly?

This is a really interesting question and Jrapa86 has given a a good answer, I thought of one small extra point though. When you think about what actually makes the movement of a bolus of food through ...
Brian Ó Maoláin's user avatar
2 votes

How can liquids such as oral contrast agents coat the intestinal tract so quickly?

First we need to make a distinction between the separate types of oral contrast agents. We frequently utilize water-insoluble (like barium), or water-soluble (diatrazole). Another distinction is to ...
Jrapa86's user avatar
  • 301
2 votes
Accepted

How long after COVID-like symptoms start can one still find out if what they had was COVID?

Antibody tests can identify prior infection for at least several months after acute infection, but more than that is unknown. Vaccination produces antibodies against the S protein; testing for ...
De Novo's user avatar
  • 3,178
2 votes
Accepted

How long does it take for iron supplements to start improving energy levels? Is it instant or gradual?

Ferritin levels of 21 ug/L are on the extreme lower edge of the normal range. You can think about iron stores as follows. A healthy person will have iron stores of a few grams. Since iron is present ...
Count Iblis's user avatar
  • 2,270

Only top scored, non community-wiki answers of a minimum length are eligible