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Doctors say he has liver problems and edema, swelling, which makes him appear bloated. but we don't know if the entire story is true. the hardest part he says is long periods without rain. he had to drink his own bodily fluids. >> urine. >> reporter: he finally washed up on a coral island. he was stark naked when he yelled at two residents. witnessed said his boat was covered in sea animals with a dead turtle and fish remains inside. during the interview, he kept touching his long hair. then he was treated to a haircut and a shave, all that hair like a bad memory, cast away. jeanne moos, cnn, ...

Castaway, jose salvador alvaranga left mexico on a one-day fishing trip he was with a teenage fisherman. after their boat was blown off course, he says his companion refused to continue eating raw food and eventually died. throughout what would be a 5700-mile journey, he says he survived on fish, birds and turtles. >> how did he catch a turtle? >> reporter: it wasn't exactly like when the flying fish dropped from the skies in "the life of pi." alvaranga says the turtles did come banging against the boat. so that all he had to do was grab them. skeptics abound. tweeting out "that's one chubby c...

>> back now to the weekly segment, should i worry? the doctors focus on everything that worries us. "both of my husband's legs are swollen three times the size from above the knees to the feet and he will not go to the doctor. should i worry? is that bad circulation? >> he needs to be seen. there are a lot of things it can be. first, put your fingers and see if it is pitting edema. does it have "give." that tells me something. if it can be indented. is there a lot of weight gain? what i worry about are your lungs, your heart, your kidneys and your liver. those are the big ones. is there someth...

Our weekly segment "should i worry" which the doctors focus on everything that worries us." both of my husband's legs are swollen three times their size above the knees to the feet. he will not go to the doctor. should i worry?" is this bad circulation in. >> he into edds to be seen. that's for sure, because there is a lot of things this can be. first thing is put your fingers and see if it's pitting edema, in other words does it have give to it, if it can be indented. secondly, is there a lot of weight gain, are you short of bra brette? i worry about your lungs, your heart, your kidneys and y...

Valves will block it from going down. if there are issues with the valves on something called valve insufficiency they get swollen. >> does it tell you anything because it is both legs? >> more like thousand have a backup from the lung or heart if it is both legs. >> i have to make sure you don't have heart failure. ait sounds like congestive heart failure. >> it could be. >> what is edema? >> a swelling of the fluid, where the fluid gets out. another thing, is your lymph nodes, if they -- they are like a sewer system, and all the infection goes to the lymph nodes and if they are blocked you g...