Roman Toilets Offered No Clear Health Benefits

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Roman Toilets Offered No Clear Health Benefits
Summary
"Roman toilets offered no clear health benefits" it was surprisingly announced in the journal Parasitology.  Romans have left several historic buildings. Around 2000 years ago, they built public latrines, baths and some sewerage systems. However, it was found that parasites such as lice were widespread and a serious disease, dysentery increased by examining fossilized feces and excavated combs.
It was said that the warm waters of the bathhouses that people shared was the reason. The waters were not changed often, and scum, or a layer of human dirt and cosmetics, would float on the top of the bathing water. Human waste was used to fertilize crops, and it led to spreading pareasites eggs in there. It would relate that they ate garum which was made from pieces of fermented fish. Due to not being cooked, in the sealed jars, the fish tapeworm increased also.
It's suggested that Roman sanitation may not be good because people couldn't keep health. 
Discussion
1. Have you ever been to Rome? IF not, what do you know about Rome?
I have never been to Rome. I think that Rome is a beautiful citiy where there are a lot of famous historic buildings. It is said that their sewerage systems which are public latrines and private baths are great though new findings was announced this time. It is amazing to know the history, even it's thousands of years ago.
2. Does your country have it’s own ‘toilet culture’? What are they?
Yes, it has. By the way, I had my own experience that it was important to keep public toilets clean. In the past, even in Japan, the public toilets were not cleaned in the stations or in the Department stores. I was not able to use those when I go outside. I got sick. It is important for us to pass waste out from our body. Recently, Japanese toilets are beautiful and clean. Especially, in the Department stores or  Sopping malls. Its areas are wide and useful. It's almost set toilet seat with bidet function called wash toilet in Japanese. There are some spaces where women can sit and put on makeup. It's a strategy which Department stores lure women to come in their place. It seems that some foreigners take photos there due to its beauty.
3.What are the traditional cleaning methods in your country?
Now, Japanese sewerage systems are great. Used water at toilets, baths, kitchen and rainwater, those are cleaned in the sewage plants and released in the seas.
Words in this story
latrines / a toilet, especially a communal one in a camp or barracks.
scum / a layer of dirt or froth on the surface of a liquid.
fertilize / cause (an egg, female animal, or plant) to develop a new individual by introducing male reproductive material.
garum / fish sauce (made from fermented salted fish)