Wellmarrow

Clear answers to everyday health questions

Healthy Aging

What Habits Keep Your Brain Healthy as You Get Older?

Staying active, controlling blood pressure, treating hearing loss, sleeping well and staying social have the best evidence for brain health, though much of it is observational.

Oliver Bennett · Oct 31, 2026

Nutrition

What Are Ultra-Processed Foods and Are They Bad for You?

Ultra-processed foods are industrial products built from refined ingredients and additives. Studies link them to heart disease and diabetes, but the evidence has real limits, and not all processed food is a problem.

Oct 31, 2026 · 7 min read

Sleep

Does Melatonin Work for Sleep, and Is It Safe?

Melatonin helps most with jet lag and a late-running body clock, and only a little with general insomnia. Here is what the evidence shows, how much to take and when, and who should avoid it.

Oct 31, 2026 · 7 min read

Weight Management

What Is a Calorie Deficit and How Big Should Yours Be?

A calorie deficit means eating less energy than your body uses. Here is how it works, why the 3,500-calorie rule falls short, and why about 500 calories a day is a sensible place to start.

Oct 31, 2026 · 8 min read

Healthy Aging

What Habits Keep Your Brain Healthy as You Get Older?

Staying active, controlling blood pressure, treating hearing loss, sleeping well and staying social have the best evidence for brain health, though much of it is observational.

Oct 31, 2026 · 7 min read

How we write

Each article tries to answer one question properly: what the research shows, where it runs out, and when it is time to talk to a doctor instead of reading more. The sources are listed at the end, so you never have to take our word for it.

How articles are checkedEditorial policy

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