 [ Symptoms ] could you provide a few links to the major studies showing excessive saturated fat is unhealthy  this website and the american heart association continue to recommend a diet low in saturated fat but the current buzz on the internet is that there is really little evidence for that position in fact france eats a diet high in saturated fat yet has a low rate of deaths from heart disease <link> <link>  can i see links to the original studies showing sf is harmful [ Disease ] i am as confused as you are i do not see how any health care provider can say a disease process does not exist if they have not done the appropriate testing however if your internal medicine doctor has done any blood work on you recently i would assume he or she did in fact test you for b12 deficiency since you would been previously diagnosed i think the key here is communication i would suggest you make another appointment with your internal medicine provider to discuss your concerns and confusion over the situation if your provider has blood test results he or she should be happy to share them with you if not you may ask again to be tested since you are symptomatic if you do not get satisfaction from this provider feel free to find another one it is important to have a primary care provider who listens to your concerns and takes time to explain the answers to your questions all the best to you