According to Dr. Keith-Thomas Ayoob of Albert Einstein
College of Medicine in New York, "In my experience,
unless you're willing to throw out decades of research,
you cannot ignore that diets chronically high in saturated
fats are linked to heart disease," Dr. Ayoob is also a
spokesman for the American Dietetic Association
and says that low carb, high protein diets are an attempt
at a quick fix and not a long-term lifestyle change. 

10. As someone recently told me, "it must work - people
are losing weight". People that are truly losing fat on
low carb, high protein diets, are doing so because they
are eating fewer calories - that's the bottom line. There
is no magic - the same can be done on a healthy diet. 

11. Low carb diets are lacking in fibre. Every plant-based
food has some fibre. All animal products have no fibre. A
lack of fibre increases your risk for cancers of the digestive
track (because transit time is lengthened) and cardiovascular
disease (because of fibres effect on fat and cholesterol). It
also puts you at a higher risk for constipation and other bowel
disorders. 

12. Low carb diets lack sufficient quantities of the many
nutrients / phytonutrients / antioxidants found in fruits,
vegetables, legumes, and whole grains, necessary for health
and aiding in prevention of cancer and heart disease. In fact,
you need these nutrients even more so when you're consuming
too much fat, as is often the case on a low carb high protein diet. 

13. Americans already consume more than twice the amount
of protein needed. Add to that a high protein diet and you
have far too much protein consumption. By the way, most people
don't realize that all fruits, all vegetables, all whole grains,
and all legumes also contain protein. Animal products contain
larger quantities of protein, but that may not be a good thing. 

Excess dietary protein puts you at a higher risk for many health
problems: gout (painful joints from high purine foods which are
usually high protein foods), kidney disease, kidney stones,
osteoporosis (excess dietary protein causes leeching of calcium
from the bones). By the way, countries with lower, healthier
intakes of protein also have a decreased incidence of
osteoporosis. 

14. Low carb, high protein diets cause an unhealthy
physiological state called ketosis, a type of metabolic acidosis.
You may have heard the phrase, "fat burns in the flame of
carbohydrate". Excess acetyl CoA cannot enter the Krebs
Cycle (you remember the old Krebs Cycle) due to insufficient
OAA. In other words, for fat to burn efficiently and without
production of excess toxic ketones, sufficient carbohydrate
must be available. Ketosis can lead to many health problems
and can be very serious at it’s extreme. 

15. Bad breathe. Often called "keto breath" or "acetone
breath", it’s caused by production of acetones in a state of
ketosis. 

So why the low carb, high protein craze? I believe there are
several reasons. 

A. Weight loss (mostly muscle and muscle fluid) is often
rapid during the first few weeks. This causes people to think
they’re losing fat rapidly. 

B. It gives you "permission" to eat the "bad foods": bacon,
eggs, burgers, steak, cheese, etc., and lots of fat. 

C. Many see it as the new "magic" they've been looking for,
although it's been around, in various forms, since the
1960's.

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