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This is a common question and and the answer is quite obvious. This has something to do with the medicinal properties of turmeric.
I have already said in my previous posts that turmeric acts as an anti-oxidant(Read here
and it also acts as an anti-cancer agent(Read here-under research).
Turmeric also has some other cool properties like
It is a powerful antibiotic.
It helps heal wounds faster and more.
In ancient times women are the ones who work most in the kitchen and Indians don’t have the habit of wearing sandals etc in house. So their feet are exposed to water on floor and they also stand for lot of time on hard floor. Also, their feet are already sensitive. It puts pressure on their feet and lead to cracks on their feet. Here comes the use of turmeric.
Turmeric is an antibiotic. So turmeric kills the microbes on feet( which may enter through cracks on feet) and prevent further infection.
Turmeric itself heals these cracks on feet. Nowadays women apply certain creams to fight with these cracks. Indian women used turmeric to fight them.