Question
So I've heard this around from people, including close friends, that wearing sandals too often (as in, I'm taking it, everyday footwear) will led to having wider feet.

Is this true?

Answer
Only if you eat a lot----
Only kidding.
Not true-your feet will develop as you have been genetically programmed
Feet do get bigger as you age for some people. Orthotics in shoes may help prevent low arches secondary to a condition known as posterior tibial tendinitis--which is loss of the arch due to age, weight, foot type or other factors---but not sandals
Good Luck Again
Dr George Tsatsos-Chicago & Elmhurst Podiatrist
Board Certified Foot & Ankle Surgery & Orthopedics
NOT ADVICE_JUST INFO FOR ALL