“Follow The Nutrition Guidelines or Follow Your Heart, http://valeriegoldstein.wordpress.com/2014/03/31/follow-the-nutrition-guidelines-or-follow-your-heart/” came to be because it is important to understand that following mainstream advice without using your noggin’ is not always the right way. Cutting fat from your diet is a theme that has been used to brainwash people for way too long. Know that saturated fat is healthy for more than just your heart (60% of the hearts energy comes from burning fat) and there are healthcare professionals and research that supports this way of thinking.
Data relating saturated fat as supporting body organs and vital body functions exists and the next few blogs will hopefully open more discussions on this topic.
After last weeks blog on the heart, the brain tops this list as an organ that depends on monounsaturated and saturated fats and cholesterol for proper functioning. Fats compose 60% of the brain and is especially important for fetal brain development. This may be why human breast milk is one of the best sources of saturated fat. The brain also houses twenty-five percent of total body cholesterol.
Monounsaturated fats can help boost moods and help improve psychological health related disorders but these fats may be especially important for aging brains and the elderly, specifically in regards to memory and visual-spatial recognition (important for driving).
Saturated fats and cholesterol are just as important as monounsaturated fats in regards to brain health. In this interview for Psychology Today, http://www.psychologytoday.com/blog/the-optimalist/201310/your-healthy-diet-could-be-quietly-killing-your-brain, David Perlmutter (Board-Certified Neurologist and Fellow of The American Board of Nutrition) describes the benefits of both these nutrients. He says that saturated fats “are “building blocks for brain cells” and cholesterol is a “brain protective” antioxidant that is a precursor to vitamin D too, which also plays a role in brain health and indirectly is a precursor to the sex hormones.
He cites two examples that measured saturated fat and cholesterol intake in elderly volunteers. The results are not those you will likely hear from a typical doctor. One is a study that found a 36% lowered risk for developing dementia in individuals who ate the most saturated fat; the other study, resulted in a 70% risk reduction for dementia in volunteers with the highest cholesterol levels. He mentions this phenomena as a possible issue with medicine intended to lower cholesterol. Even the FDA acknowledges this, as they now require “memory decline and cognitive health concern” warnings on the labels of cholesterol lowering medicine. In another study, results showed an 89% increase in dementia risk in those who ate more carbohydrates.
The lungs need saturated fat too. Lung surfactantis a fluid made of fats and protein. It works to prevent the lungs from collapsing and helps protect the lungs from bacteria and viruses. Studies on animals with poor lung function were tested using three diets, (unsaturated, monounsaturated and palmitic saturated fat). Unsaturated fat made lung function worse.*
* The study appeared in Nutrition,2002 Jul-Aug;18(7-8):647-53 and the author and title: Wolfe et al., “Dietary fat composition alters pulmonary function in pigs.”
This may be due to the fact that 68% of surfactant in the lungs is saturated palmitic fatty acid. Palmitic acid is one of the most common saturated fats found in the food supply, 14% in olive oil and 25% in beef, lamb and butter, http://dietheartnews.com/2012/01/you-cant-fool-the-body-saturated-fats-are-converted-into-unsaturated-fats-and-as-needed-unsaturated-fats-are-converted-back-into-saturated-fats/.
I’m not here trying to bring down unsaturated fats, I’m trying to shed light on the health importance of saturated fats to even the playing field in regards to your thoughts on saturated fats and optimizing your diet with a variety of all types of foods and fats. Next week I will continue to describe the helpful role saturated fats play in good health.