Evidence Library

Is it true?

Claims you hear everywhere, checked against peer-reviewed research. Each page shows how strong the evidence is, why, and which papers say so. A human editor reviews every page before it is published.

5 claims checked · How we check

Supplements

Supported by research

Do omega-3 fish oil supplements protect your heart?

Yes, omega-3 fish oil supplements reduce the risk of heart attack and stroke.

5 peer-reviewed papersSupported by research

Do probiotics improve digestion in healthy adults?

Yes, probiotic supplementation supports gastrointestinal wellness and intestinal function in healthy adults.

5 peer-reviewed papersSupported by research

Does vitamin D prevent colds and flu?

Yes, vitamin D supplementation can help prevent acute respiratory tract infections and colds, particularly in individuals who are deficient.

5 peer-reviewed papers

General

Not confirmed

Does cracking your knuckles cause arthritis?

No, scientific studies and clinical reviews show that habitual knuckle cracking does not cause arthritis.

5 peer-reviewed papers

Nutrition

Not confirmed

Does drinking coffee dehydrate you?

No, moderate coffee consumption does not cause dehydration because the fluid in coffee contributes to daily water balance similarly to plain water.

5 peer-reviewed papers