Dr. Joseph Brodhead Callahan M.D.

Recommended Articles

• Is Gastric Bypass Effective for Weight Loss?

  A new study that was published in the journal, Archives of Surgery, shows that gastric banding may not be as effective as gastric bypass surgery in regards to weight loss. Gastric banding is considered to be safer and simpler than gastric bypass surgery, and many overweight and obese people are...

• Having Small Babies May Increase the Risk of Heart Disease in Mothers

  According to a new study, women who give birth to small, full-term babies have increased chances of developing heart diseases later in their life. The new study, conducted by the University of Texas Medical Branch in Galvesto, shows delivery of small babies as an independent predictor of heart...

• Innovative New Technique Improves Breast Cancer Diagnosis

  Despite only using a conventional optical microscope, researchers have found a way to see farther and more detailed into what they are studying. This is by using expansion microscopy, expanding the size of what they are observing, instead of intensifying the microscope at a high cost. This technique...

• How Soon After Sex Can You Take a Pregnancy Test?

  A pregnancy test can provide an accurate result up to ten days after intercourse. If the test is done early, its accuracy is reduced. The standard time frame is 10 to 14 days following sexual intercourse. HCG is produced two weeks following conception or ovulation; therefore, a false result may be...

• How Long Can Sperm Live?

  Introduction An average man ejaculates 1/2 teaspoon to 1 teaspoon of semen. This small amount of semen contains millions of sperm cells. It only takes one sperm to fertilize an egg, but each sperm has a limited life span, which begins once it leaves a man's body.For a couple trying to have a baby,...

• How Your Father’s Genes Can Affect Your Ovarian Cancer Risk

  It is well known that inherited mutations in BRCA1/BRCA2 genes increase the risk of breast and ovarian cancers, as well as other types of cancer. An altered mutation in the BRCA1 or BRCA2 gene can be inherited from an individual’s mother or father. ...