What is hydrogen-infused water? Is it a real health breakthrough or just another expensive wellness fad? Is it safe? And what does the research say about its ability to boost athletic performance, fight oxidative stress and inflammation, and prevent and treat chronic disease?

Grass-fed beef is often marketed as a healthier, more eco-friendly, and more ethical option for red meat-eaters. Is grass-fed really better than conventionally-raised beef? And can it be good for your health or the planet?

Many aspiring plant-based eaters and vegans stumble over cheese. The thought of giving up their ooey-gooey pizza topping or caprese salad has proven just too much. But fear not, cheese lovers: A new hero has arrived! Welcome to the wonderful world of nut cheese.

That seemingly innocuous piece of chewing gum may be anything but: Most conventional brands are made from synthetic polymers — the same stuff used in plastic bottles. But does this plastic actually get ingested when we chew? Does gum chewing have any upsides for dental health? What’s better: sugared or sugar-free gum? What are the surprising findings regarding gum chewing and your ability to focus on demanding cognitive tasks? And which brands of chewing gum are best for us and for the planet?

Osteoporosis is a disease that weakens bones and can make them so brittle that they break easily. Common osteoporosis-related fractures are those of the hip, wrist, and spine, and some cases can be caused by a cough or even by bending over. Is osteoporosis an inevitable part of aging, or are there dietary and lifestyle strategies that can keep your bones healthy and strong?

Every year, poor diet kills more people worldwide than smoking, car accidents, and war combined. It's the #1 cause of premature death—yet it's the one thing your doctor likely never discusses with you. Why? In this powerful presentation, Dr. Michael Greger reveals how the same forces that kept doctors promoting cigarettes for decades are now burying lifesaving nutrition science in medical journals. Through his grandmother's recovery from "terminal" heart disease, landmark studies showing disease reversal in weeks, and an unflinching look at medical education's failures, Dr. Greger proves: the cure to our biggest killers has been hiding in plain sight.

Pizza is one of the most popular foods on the planet. It's known for being gooey, savory, and tasty, and for being a great party and finger food. The problem is, most pizzas also deliver a heavy dose of salt, empty calories, and saturated fat. Can the pizza be made healthier so that health-conscious, plant-based eaters can still enjoy it? Let’s give it a try!

Fish and seafood are often recommended as good sources of healthy nutrients like protein and essential fatty acids. Some research even suggests that fish may help you live longer, with a lower risk for disease. But how much truth is there to these claims? What about contamination with mercury and other heavy metals? And what about the ethical and sustainability concerns?

In the West, sushi has gone from unfamiliar to mainstream over the past couple of decades. But while many people love the taste of sushi rice and salty seaweed, some don’t want to eat fish. Luckily, we can make vegan sushi that’s every bit as tasty as the fishy original — without the heavy metals or the microplastics.

Feed a cold, and starve a fever. Or is it the other way around? It can be hard to separate fact from well-meaning fiction when it comes to preventing and recovering from colds and flu. But science has been busy, and now we have simple and powerful strategies to keep from catching a cold — and to suffer less and get better faster if we do. Here are five lifestyle strategies and seven superfoods proven to help keep you well during cold and flu season.