Veterinary Medicine Commons^™

The Ethics Of Referral, Bernard Rollin

Professional Veterinary Ethics Collection

The rapid growth of veterinary specialty practices has created a number of vexatious ethical issues relevant to veterinary medicine. The preeminent question pertains to “the duty to refer.” Do primary care practitioners have such a moral duty? If so, when does this duty arise? Does it pertain in all cases where specialized knowledge is relevant to a disease?

This raises the fundamental question of “Veterinary Ethics” — namely, does the veterinarian ideally have primary obligation to the client/owner or the animal? (1) There are 2 possible ideal types that a veterinarian can aim for — the Garage Mechanic Model or …

Does Diving Limit Brain Size In Cetaceans?, Lori Marino, Daniel Sol, Kristen Toren, Louis Lefebvre

Veterinary Science and Medicine Collection

We test the longstanding hypothesis, known as the dive constraint hypothesis, that the oxygenation demands of diving pose a constraint on aquatic mammal brain size.Using a sample of 23 cetacean species we examine the relationship among six different measures of relative brain size, body size, and maximum diving duration. Unlike previous tests we include body size as a covariate and perform independent contrast analyses to control for phylogeny. We show that diving does not limit brain size in cetaceans and therefore provide no support for the dive constraint hypothesis. Instead, body size is the main predictor of maximum diving duration …

Carotenoid, Vitamin A, Vitamin C, And Vitamin E Intake And Risk Of Ovarian Cancer: A Prospective Cohort Study, Stephanie A. Navarro Silvera, Meera Jain, Geoffrey R. Howe, Anthony B. Miller, Thomas E. Rohan

Department of Public Health Scholarship and Creative Works

It is thought that oxidative stress resulting to repeated ovulation may increase the risk of ovarian cancer by inducing DNA damage (1). Consumption of antioxidants may, therefore, decrease ovarian cancer risk by counteracting oxidative stress and the resultant DNA damage (2, 3). Currently, the epidemiologic evidence regarding associations between antioxidants and risk of ovarian cancer is mixed (4-12). Of the two prospective studies, Kushi et al. (4) and Fairfield et al. (7) both reported no association between β-carotene and ovarian cancer risk. In addition, Fairfield et al. …