Effects · body adverse
Nail Changes
Undesirable changes in the appearance or structure of nails: brittleness, splitting, discoloration (yellowing, darkening), appearance of ridges or spots, slowed growth. Can be caused by nutrient deficiency/excess or toxic effects.
- Supplements
- 1
- Practices
- 4
- Habits
- 4
How we rate evidence
Probability — how likely the effect is to show up
- Very high
- High
- Medium
- Low
Evidence — where the data comes from
- Scientific Meta-analyses and randomized trials
- Clinical Clinical trials and practice
- Animal research Animal studies
- People reports User reports and anecdotes
- Theoretical Mechanistic reasoning, not yet tested
Reported as a side effect of (9)
Probability Very high 1 High 1 Medium 3 Low 4
Evidence Clinical 3 People reports 5 Theoretical 1
- Selenium Supplements LowTheoretical
- Clay Sculpting / Modeling Practices MediumPeople reports
- Elimination Diet Practices LowPeople reports
- Knitting / Fiber Arts Practices LowPeople reports
- Trail Running Practices MediumPeople reports
- Cigarette Smoking Habits HighPeople reports
- Nail Biting Habits Very highClinical
- Not eating enough Habits MediumClinical
- Walking Habits LowClinical