Run a Marathon. Quickly Followed by Another.

NYTimes.com (Health) 11/12 10:00P TALYA MINSBERG

A growing number of runners have decided to take their marathoning to the next level by running multiple marathons within a short period of time.

The Checkup: The War to End All Measles

NYTimes.com (Health) 11/11 10:00P PERRI KLASS, M.D.

Young people who went to war 100 years ago often died from what are now preventable childhood diseases. We can try to keep today’s children a little safer.

Personal Health: Too Much Caffeine May Stress the Heart

NYTimes.com (Health) 11/11 10:00P JANE E. BRODY

In moderate doses caffeine has mainly positive effects for most people. But it increases production of cortisol, which can lead to health problems including anxiety, weight gain and heart disease.

In China, Desperate Patients Smuggle Drugs. Or Make Their Own.

NYTimes.com (Health) 11/11 7:02A SUI-LEE WEE

Despite health insurance, terminally ill patients have to hunt around the world and on the internet for ways to stay alive.

Vitamin D and Fish Oils Are Ineffective for Preventing Cancer and Heart Disease

NYTimes.com (Health) 11/10 8:00A RONI CARYN RABIN

The largest study to test vitamin D and omega-3 pills in healthy adults found they did little to prevent cardiovascular disease, but hinted at benefits for groups including African-Americans.

The Chemists’ War

NYTimes.com (Health) 11/10 1:43A THEO EMERY

One hundred years after the end of World War I, the Army Corps of Engineers is still cleaning up the relics of experiments that helped develop chemical weapons to counter the Germans’ gas attacks.

F.D.A. Plans to Seek a Ban on Menthol Cigarettes

NYTimes.com (Health) 11/9 1:25P SHEILA KAPLAN

The move is part of an aggressive campaign against many products containing nicotine, including flavored e-cigarettes. Menthol has long been a concern among African-Americans because of its addictive qualities.

At War: What Stereotypes Do You See Around Veterans and PTSD?

NYTimes.com (Health) 11/9 7:13A

We’re asking readers to tell us what stereotypes they have observed around military service and PTSD and how they challenge them.

The New Old Age: Dementia Is Getting Some Very Public Faces

NYTimes.com (Health) 11/9 6:21A PAULA SPAN

Stigma often prevents patients from acknowledging an Alzheimer’s diagnosis. A series of high-profile disclosures may help change that.

Soy Baby Formulas Tied to Menstrual Pain

NYTimes.com (Health) 11/9 4:57A NICHOLAS BAKALAR

Women fed soy-based formula as babies were more likely to have severe menstrual pain as adults.

Goodbye, Tampon Tax (at Least for Some)

NYTimes.com (Health) 11/9 3:09A MAYA SALAM

Nevada became the 10th state to eliminate the so-called tampon tax, freeing consumers of sales tax when buying tampons and sanitary pads.

Ask Well: Would Two Flu Shots Protect Me Better Than One?

NYTimes.com (Health) 11/8 10:01P RICHARD KLASCO, M.D.

Booster doses can make the flu vaccine more effective, but the benefit is limited to a few specific groups.

F.D.A. Plans to Ban Most Flavored E-Cigarette Sales in Stores

NYTimes.com (Health) 11/8 1:27P SHEILA KAPLAN

After warning Juul and other e-cigarette makers to keep their flavored products away from minors, the F.D.A. wants to curb sales altogether.

Matter: Crossing From Asia, the First Americans Rushed Into the Unknown

NYTimes.com (Health) 11/8 7:47A CARL ZIMMER

Three new genetic analyses lend detail, and mystery, to the arrival of prehistoric humans in the Western Hemisphere.

The Ecosystem in Immigrants’ Guts Is Shaped by the Place They Call Home

NYTimes.com (Health) 11/8 5:57A STEPH YIN

By studying the relationship among ethnicity, migration history and the digestive system’s microbiome, researchers hope to gain insights on health disparities in diverse communities.