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She saw the obesity epidemic coming. Then an unexpected finding mired her in controversy.

Katherine Flegal was a scientist who found herself crunching numbers for the government, until one day her analyses set off a firestorm. What does she make of her decades as a woman in public health research?

The invention of incarceration

Prisons have been controversial since their beginnings in the late 1700s — why do they keep failing to live up to expectations?

Soda taxes can’t reverse the obesity epidemic

OPINION: They might be able to help, but only if well-designed and in combination with other policies

Sounding the alarm: How noise hurts the heart

Loud road and air traffic has been linked to a greater risk of high blood pressure, heart attacks and strokes. Scientists are uncovering new details about how what you hear stresses the cardiovascular system.

Living with chronic illness: Why some cope and others don’t

What helps some people diagnosed with cancer, heart disease or diabetes stay relatively happy and healthy, while others are devastated? Psychologist Vicki Helgeson explains the traits and mindsets that can make the difference.

The baby brain: Learning in leaps and bounds

VIDEO: Learn how the baby brain changes from gestation to toddlerhood, and what parents, teachers and policymakers can do to ensure kids are set up for success

The global soda tax experiment

An increasing number of cities and countries have begun taxing sugary beverages. But can raising the price of these drinks really make a dent in obesity, diabetes and other ailments?

Zooming in on the brains of babies

New tools are helping neuroscientists investigate why early life is such a crucial time for neural development

Vaccinating the world against Covid-19

Lower-income countries haven’t gotten an equal share of lifesaving coronavirus vaccines. Older, more familiar vaccine technologies may hold the key to more equitable use, says Maria Elena Bottazzi.

Tackling the growing problem of overmedication

Polypharmacy — taking five or more meds at a time — leads to side effects, unnecessary hospitalizations and premature deaths. Researchers and pharmacists are seeking solutions to this serious public health problem that disproportionately affects older adults.

Monitoring our health with smartwatches

VIDEO: Wearable devices are increasingly used for tracking health data and identifying problems. Learn from health researchers about exploring the promise and pitfalls of personal tech.

I tested positive for Covid-19 antibodies — what now?

As immunologists struggle to understand the immune response, psychologists want to know how infected people will think and behave after they recover

Dealing with rats, and their health, in America’s ‘rattiest’ city

OPINION: A study in Chicago found that rodents surviving poisoning are more likely to carry disease. Good pest control needs to take such things into account.

Does online opioid treatment work?

The Covid-19 pandemic brought a sudden shift to virtual health care. That has increased access — and possibly outcomes, too — for patients with opioid use disorder.

Getting a Covid-19 vaccine — quickly and safely

Researchers around the globe are working with unprecedented speed to find the vaccines we need to find our way through the pandemic. What’s the bar for safety and effectiveness?

Pandemic psychology: Nothing new under the Sun

OPINION: Our behavior during Covid-19 echoes that of individuals, societies and governments during past plagues. We can and should do better.

Sex, immunity and the brain

Differences between the immune systems of males and females — in particular, ones involving cells called microglia — might help explain why the risk for conditions such as autism and Alzheimer’s varies between the sexes

The quest for better baby formula

Replicating human milk is no easy feat — nor is separating the science from the hype

How racism in early life can affect long-term health

OPINION: Excessive adversity activates biological reactions that can lead to lifelong problems in physical and mental wellbeing

Matching meals to metabolism

Genes, microbes and other factors govern how each person’s body processes nutrients. Understanding the connections could help optimize diets — and health.

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