The magazine for fitness, health and nutrition

What happens with too much testosterone? Endocrinologist Tim Hollstein explains possible causes, symptoms, and health risks.

Many food scraps end up in the trash, even though they often contain a lot of fiber. A study reveals which plant parts are worth keeping.

For a long time, dementia was considered a natural consequence of aging. It is now clear: There are several ways to prevent the brain.

A major Alzheimer's study identifies 48 new genetic risk regions in the genome. What the findings could mean.

Do wet hair, cold feet, or drafts really make you sick? A doctor explains the truth behind common cold myths.

How much candy is allowed on Halloween? A pediatrician explains why it's not just about quantity and why bans can be problematic.

From Trainer to Winner: Former SEK Officer Dominik Lehr Reveals How He Prepared Quickly and Which Strategy Was Key

A new study reveals surprising connections between wine consumption and mortality risk. FITBOOK explains what's behind it.

It is generally believed that sauna sessions strengthen the immune system. A study has now examined the effect of just one session.

Exercise is healthy, but improper strain can be harmful. Doctors explain what you can do to keep your bones and joints in good shape.

How many steps a day are needed to give the brain a boost? Researchers found a link to better cognitive test results.

The liver is highly resilient. Many Germans are unaware that they have liver disease. Symptoms and how to protect the organ.

Following the first detection of the Shamonda virus in a human, FITBOOK investigates if there is there a risk to the public?

The end of menopause marks a significant transition, bringing abrupt changes in numerous areas. Here's what that means.

What are the symptoms of Ebola? How is the virus transmitted, how dangerous is the disease, and is there a vaccine or treatment?

COVID-19 Numbers are rising: Who should get vaccinated in fall 2026? Which variants are circulating, and when is it sensible to wear masks?

A vaccine against melanoma offers hope. What the therapy can do, what side effects may occur, and when it will be available.

Among teenagers, soft drinks are often more popular than fruits and vegetables. How does this affect their mental health? A study has examined this.

A new study links high consumption of ultra-processed foods with increased body fat and changes in the brain.

A new long-term study shows that people who frequently consume sugary drinks have a significantly higher risk of stomach cancer.

A nutrition expert explains when a food is considered highly processed and why, in her opinion, not all of them are unhealthy.

Low-carb, keto, or intermittent fasting? Experts have analyzed the research and revealed what truly matters for weight loss.

Tomato paste may offer more than just flavor. A study suggests potential effects on memory, attention, and brain function.

A U.S. study involving nearly 200,000 people shows that late-night eating was associated with up to a 30 percent higher risk of liver disease.

A study shows that highly processed foods can trigger higher insulin release and affect the metabolism compared to foods with equal calories.

According to aging researcher Valter Longo, a diet of just five days per cycle may help put the body into a rejuvenating fasting state.

If you want firm and muscular legs, you can't skip training your inner thighs—these exercises will help you achieve that.

In FITBOOK, you'll learn how "Sexiest Man Alive" Noah Wyle prepared for the physically demanding series "The Pitt."

Harry Kane, 33, is the Ballon d'Or winner and aims to continue playing active, successful soccer for a long time. His focus: proper recovery.

Jonas Deichmann inspired 19,000 people to run with his "MOVE IT!" challenge—here's how he prepared for the 30 marathons.

FITBOOK Editor-in-Chief Melanie Hoffmann shares how she stays active with a specific combination of gym and home workouts.

Hollywood Stars Show Impressive Fitness Over 50–How Dwayne Johnson and Others Adapted Their Training as They Aged.

Certain popular gym exercises can endanger your rotator cuff. A chief physician explains how he trains his shoulder depressors.

Ten years of competitive sports should be enough, she thought. But three days with The Shaolin Kid pushed the FITBOOK editor to her limits.

Sauna every day—FITBOOK editor tried it on vacation. This is how her body reacted to two weeks of daily sauna sessions.

A randomized study shows that just five weeks of supervised Nordic walking can help with depression. FITBOOK examines the study.

Can hard music relieve pain? A study shows that heavy metal fans can endure cold-induced pain longer.

A study shows: Just 10 minutes with your cat can improve your mood. However, the body reacts in a surprising way to time spent with a cat.

In South Korea, people simulate entire meal orders instead of actually placing them. Can this really trick the appetite?

Postpartum depression affects mothers and fathers: FITBOOK explains symptoms, causes, treatment, and the difference from the baby blues.

Starting in the fall, the risk of experiencing the autumn blues or winter depression increases. These tips can help prevent it.

What signs in children might indicate neurodivergence, and when should parents seek professional advice for unusual behavior?

A new study shows that men born in the summer have an increased risk of depression. More details here.