
Rachael Rettner
Rachael is a Live Science contributor, and was a former channel editor and senior writer for Live Science between 2010 and 2022. She has a master's degree in journalism from New York University's Science, Health and Environmental Reporting Program. She also holds a B.S. in molecular biology and an M.S. in biology from the University of California, San Diego. Her work has appeared in Scienceline, The Washington Post and Scientific American.
Latest articles by Rachael Rettner

Flu shot facts and side effects
By Rachael Rettner, Nicoletta Lanese published
The seasonal flu shot is a yearly vaccine that protects against the flu, or influenza. Here's what you need to know about it.

Dogs will never speak human. Here's why.
By Rachael Rettner last updated
The findings mean that dogs may be similar to human infants in their word processing abilities.

Here's What a Single Milkshake Does to Your Blood Vessels
By Rachael Rettner last updated
A chocolate milkshake may be bliss for your taste buds, but it's not so good for your blood vessels.

Herbal Supplement Controversy: Did NY Investigation Use the Right Tests?
By Rachael Rettner last updated
Law officials have accused major retailers of selling store-brand herbal supplements that do not contain the listed ingredients, but now some scientists are questioning those conclusions.

Consumers 'Flying Blind' When Purchasing Dietary Supplements, Expert Says
By Rachael Rettner last updated
Even after the FDA identifies supplements that contain prohibited drugs, it does not always recall them.

Red Yeast Rice Supplements Likely Damaged This Woman's Liver
By Rachael Rettner last updated
A woman in Michigan developed sudden liver damage after taking a red yeast rice supplement, doctors reported.

Woman's Liver Problems Tied to Her Turmeric Supplement
By Rachael Rettner last updated
For one woman in Arizona, taking a turmeric supplement may have triggered an uncommon liver problem.

Dietary Supplements Fuel Bad Health Habits
By Rachael Rettner last updated
People who take dietary supplements may ironically make worse health choices than those who don't.

Dieters May Unknowingly Buy Dangerous Weight Loss Supplements
By Rachael Rettner last updated
Dangerousdietary supplements continue to be sold and consumed in significant amounts in the United States.

Vitamin E May Increase Prostate Cancer Risk in Men
By Rachael Rettner last updated
Vitamin E supplements may increase the risk of prostate cancer in men.

Supplements Don't Prevent Depression, Study Finds
By Rachael Rettner last updated
Preventing depression isn't as simple as taking a dietary supplement every day, a new study suggests.

Dietary Supplement Ingredient Linked to Miscarriages, FDA Warns
By Rachael Rettner last updated
Supplements with this ingredient are often marketed for enhanced memory or focus, increased energy or weight loss, the FDA said.

Staying hydrated may reduce the risk of heart failure
By Rachael Rettner last updated
Drinking enough fluids is important for numerous bodily functions, including helping the heart pump blood more easily.

High Vitamin D Levels Linked with Better Fitness
By Rachael Rettner last updated
There's yet another reason to make sure you're getting enough vitamin D.

Women Receive Abortion Pills By Mail As Part of New Study
By Rachael Rettner last updated
Some U.S. women will receive abortion pills by mail as part of a study on whether these abortions, which don't involve going to an abortion clinic, can be done safely.

Type 2 diabetes: Symptoms, causes and treatment
By Rachael Rettner last updated
Reference Type 2 diabetes is the most common form of diabetes, a condition characterized by high blood sugar levels.

Fact-Checking Trump: Can Abortions Really Happen on the 'Final Day' of Pregnancy?
By Rachael Rettner last updated
Experts say this is very unlikely and does not accurately reflect the reality of abortions in the United States.

'Abortion Pill' Gets New Label: 5 Things to Know About Mifepristone
By Rachael Rettner last updated
The Food and Drug Administration has approved changes to the label for mifepristone, also known as "the abortion pill." Here are the facts about the drug.

Fetuses Have Memories
By Rachael Rettner last updated
Researchers have found evidence for short-term memory in 30 week old fetuses

Is a 'fetal heartbeat' really a heartbeat at 6 weeks?
By Rachael Rettner last updated
What exactly do we mean when we talk about a "fetal heartbeat" at six weeks of pregnancy?

Can Energy Drinks Cause Miscarriages?
By Rachael Rettner last updated
The effect of caffeine on miscarriage is still uncertain, experts say.

Strength Exercise: Everything You Need to Know
By Rachael Rettner last updated
Strength exercises, such as weight lifting, push-ups and crunches, work your muscles by using resistance.

First 'Monkeypox' Case Reported in UK. Why You Shouldn't Worry
By Rachael Rettner last updated
A rare disease that's related to smallpox has shown up in the United Kingdom for the first time.
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