Are Women the Fitter Sex? • 2021

5:02

When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.

2014 • Health

11:35

Fat is not just stored energy, it’s a complex organ that controls crucial hormones and communicates with your brain, immune system, and metabolism. It's one of the most powerful organs, but it can be one of the most dangerous ones, as well. When there’s too much of it, fat can trigger inflammation, disrupt hormonal balance, increase your risk for nearly every major disease, and significantly shorten your life. What is fat really, and how does it function? When does it become dangerous and can the damage caused by excessive amounts of fat be reversed?

In a Nutshell • 2026 • Health

2:51

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How much water should I drink a day?” SciShow has the answer!

Health

12:25

In the early days of the space race, agency researchers in Russia and at NASA really weren't sure all what would happen to an astronaut in space. They didn't know if a human mind could handle actually seeing Earth or what would happen to the human body when exposed to long periods of weightlessness. Would their blood forget which way to pump? Would their eyeballs shift or their inner ears wig out? They sent up mice and monkeys and dogs, to see what happened, and in 1961, the Russians strapped a man to a rocket headed for orbit. Yuri Gagarin was the first person in space. The ultimate human guinea pig, he survived, becoming an international hero.

SciShow • 2014 • Health

44:53

Gloria Hunniford and Chris Bavin make sense of which foods we should and shouldn't be eating. Gloria reveals her own experience of being diagnosed as pre-diabetic. With headlines suggesting millions are at risk of developing diabetes, she exposes how changing your diet can stop the condition in its tracks, and perhaps even reverse it. Chris unpicks which fruit and veg are best to eat. After years of working as a greengrocer, even he's unsure if he's eating enough, and how those five-a-day really stack up.

S1E2 • Food: Truth or Scare • 2016 • Health

49:54

From Oscar-nominated director Scott Hamilton Kennedy (The Garden) and narrated by Neil deGrasse Tyson, Food Evolution investigates the brutally polarized debate surrounding GMOs and our food. Traveling from Hawaiian papaya groves to banana farms in Uganda to the cornfields of Iowa, Food Evolution wrestles with the emotions and the science driving one of the most heated arguments of our time.

2018 • Health