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Hair cells from people going bald show signs of early aging in lab tests — they don’t grow as well and have more damage from stress and DNA issues — which might explain why hair follicles shrink over...
As we age, our hair might turn gray because of a buildup of a natural chemical called hydrogen peroxide in the hair, and our body's ability to clean it up weakens — this messes with the...
A certain ingredient might help prevent hair from going grey by protecting the cells that give hair its color, at least in lab tests using real human scalp tissue.
Too much oxidative stress might lead to fewer pigment-producing cells in hair and cause hair to lose color, based on lab studies that simulate this stress in human hair follicles.
A study found that using a certain ingredient for 4 months helped reduce grey hair in men — it made fewer hairs turn grey and lowered the number of grey hairs per patch of scalp.
After getting an mRNA vaccine, some people who feel totally fine might still show signs of heart inflammation or changes in heart metabolism on a special scan — and those signs could last up to six...
The spike protein from the vaccine has special building blocks (proline) that make it harder for the body to break down, so it might stick around longer.
Getting an mRNA vaccine with a special chemical tweak might accidentally make your cells produce weird proteins that could confuse your immune system and possibly lead to autoimmune problems — in...
The spike protein made by the body after an mRNA vaccine might stay in the blood for over half a year, much longer than doctors first expected.
The vaccine's genetic material might stick around in your heart and immune tissues for up to a month after the shot, longer than scientists first thought based on animal tests.
Different COVID-19 vaccines change the proteins in breast milk in different ways. The Johnson & Johnson vaccine causes the most changes, while Moderna and Pfizer cause fewer.
After getting the COVID vaccine, moms who are breastfeeding don’t pass any of the vaccine ingredients into their breast milk.
Getting a COVID-19 vaccine while breastfeeding doesn’t really change the makeup of your milk — no big shifts in fats, nutrients, or proteins — so it probably doesn’t affect your milk much at all.
Getting COVID-19 while breastfeeding seems to change the makeup of breast milk—like its proteins, fats, and other chemicals—in a noticeable way.
A protein that helps control inflammation behaves differently after vaccination depending on whether someone had COVID before—going down in those who did, up in those who didn’t.
When vaccinated people get COVID anyway, their bodies seem to switch into a stronger, more targeted immune mode that uses special immune cells to fight the virus better.
If you've already had COVID and then get your first vaccine, your body might dial down certain blood clotting and inflammation proteins, which could mean your immune system is responding differently...
Getting your first COVID vaccine when you've never had the virus seems to turn on key parts of your immune system that help fight off infections, especially by boosting certain immune cells and...
Getting the COVID vaccine barely changes the proteins in your blood, but actually catching the virus causes big shifts in those same proteins.
Getting COVID-19 causes long-lasting changes in the body's immune system proteins, revealing new clues about how our bodies react to the virus.
Kids with certain PCSK9 gene changes keep having lower 'bad' cholesterol as they grow up—this finding is from the abstract summary - full study details were not available
African-American kids with certain PCSK9 gene changes (Y142X or C679X) have lower 'bad' cholesterol from a young age—this finding is from the abstract summary - full study details were not available
White kids who have a certain genetic change (R46L) in the PCSK9 gene tend to have lower 'bad' cholesterol levels from a young age—this finding is from the abstract summary - full study details were...
For people with heart disease, even when doctors start with a middle-strength cholesterol pill and adjust based on blood tests, more than half still end up needing the strongest dose to get their...