Feeling sick day2day. Weight losing.3 years ago I was ok, but today. Even lifting a laptop in one hand. Food is same as before. What is it?

Not Enough Info. There are too many things that could be causing your symptoms. Additional information obtained through a thorough history and physical exam, along with some lab work would be needed. There are high incidences of pre-diabetes, medibolic disorders, industrial pollution, and parasitic diseases.