Nathan Seppa
Biomedical Writer (retired September 2015)
 
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All Stories by Nathan Seppa
- 			 Health & Medicine Health & MedicineComing to a Bad End: Lost chromosome tips linked to heart problemsMen with short telomeres, the ends of chromosomes, are twice as likely to develop heart disease as are men with longer telomeres. 
- 			 Health & Medicine Health & MedicineNo Fluke: New weapon against tropical parasiteAn experimental drug shows potential against schistosomiasis. 
- 			 Health & Medicine Health & MedicinePutting the kibosh on black cohoshThe herbal supplement black cohosh is no more effective than a placebo in reducing the number of daily hot flashes in menopausal women. 
- 			 Health & Medicine Health & MedicineGood news for people with clotting disorderSeveral experimental drugs show promise against the bleeding disorder known as immune thrombocytopenic purpura. 
- 			 Health & Medicine Health & MedicineBad to the Bone: Acid stoppers appear to have a downsidePopular acid-reducing drugs called proton-pump inhibitors may increase the risk of hip fractures in people over 50. 
- 			 Health & Medicine Health & MedicineAIDS Avoidance: More studies find that circumcision deters HIVTwo large trials in Africa find that male circumcision limits HIV infection, which could prompt governments on that continent to promote or subsidize the operation. 
- 			 Health & Medicine Health & MedicineTransplant reaction reversed in patientsFrom Orlando, Fla., at a meeting of the American Society of Hematology Patients with leukemia get a fighting chance when they receive a transplant of bone marrow cells from a healthy donor. Unfortunately, immune cells from these new arrivals can run amok in the recipient, creating a life-threatening complication called graft-versus-host disease (GVHD). Last year, […] 
- 			 Health & Medicine Health & MedicineExperimental clot inhibitors match conventional drugsFrom Orlando, Fla., at a meeting of the American Society of Hematology Two new drugs—one in pill form and another requiring only a single weekly injection—prevent dangerous blood clots in leg veins just as well as do standard treatments that require daily shots, two European research teams report. In one study, scientists in Sweden focused […] 
- 			 Health & Medicine Health & MedicineDrug takes a shot at leukemia cellsFrom Orlando, Fla., at a meeting of the American Society of Hematology A drug that targets solid tumors such as those of lung cancer might also fight blood cancers, a lab study shows. Erlotinib (Tarceva) attacks cells by blocking a receptor protein that’s abundant on the surface of some cancer cells (SN: 8/27/05, p. 139: […] 
- 			  Decoding a protein to fend off sepsisFrom Orlando, Fla., at a meeting of the American Society of Hematology Sepsis is a lethal blood disorder that typically arises from bacterial infections. It’s marked by organ damage caused by inflammation and blood vessel leakage. A synthetic version of activated protein C (ACP) is the sole drug approved to specifically attack sepsis, but it […] 
- 			 Animals AnimalsEbola Die-Off: Gorilla losses tallied in central AfricaBetween 2001 and 2005, Ebola virus killed at least 5,500 lowland gorillas in the Republic of the Congo. 
- 			 Health & Medicine Health & MedicineIndian men are prone to insulin resistanceMen from India are more likely than those in other large ethnic groups to have a condition that predisposes them to adult-onset diabetes.