Nothing in biology makes sense except in the light of evolution.
Until the medical profession starts to think about what our evolutionary environment was with regards to nutrition, and what's at odds with this evolutionary environment in todays nutrition, we will remain in the dark about the causes of obesity. Some sort of constant "Calorie Restriction" is most certainly not part of an natural environment. All animals are evolutionary selected to search the food that is right for them and eat until they have taken up the right amount of food – with interspersed episodes of insufficient food supply (which certainly is not the norm).
The number one source of calories in all age groups [in the US] is "grain-based desserts". The next five in adults are yeast breads, chicken dishes, soda/sports drinks, alcohol and pizza.One problem that should be immediately obvious from this are supernatural stimuli in the form of adding sugar to all kinds of food products with sugary/alcoholic beverages being the biggest problem. In an natural environment, you don't take up calories when you drink.
Another thing that should be immediately obvious is how much grain products there are in that list:
If there is meat in that list, it is mostly chicken or processed meat from pizzas. Something to ponder about.
- grain-based desserts
- yeast breads
- chicken dishes (how high is the share of breading?)
- soda/sports drinks
- alcohol (mostly beer I'd reckon)
A few more points (from the top of my head) that are not immediately obvious:
For finish, I give you one image:
- The content of saturated fat in such a diet would be lowish due to the common usage of vegetable oil with high PUFA content, instead of sources of fat that are available in an evolutionary environment (like animal fats)
- The ratio of PUFAs is highly skewed towards Omega-6 fatty acids and away from Omega-3 fatty acids (see Bill Lands for reference)
- The content of partially hydrogenated oil in this common diet would probably be "unnaturally" high (no way we could consume so much of that stuff in our evolutionary environment)
- Animals that end up in our diet are fed a diet that is high in grain leading to a different composition of the resulting meat (higher fat content, lower Omega-3 content, most probably other changes as well)
Lard and butter consumption is on the decline.
At the same time the consumption of margarine, shortening and vegetable oil is on the rise.
While correlation does not imply causation, this correlation is something I would consider worthy of investigation.
Saturday, February 4, 2012
I think it is good to reproduce here a comment I made at another blog:
5-AZA A. Melvin Ramsay Acne Advocacy Alan Light Alternative medicine is an untested danger Ampligen Andrew Wakefield Anecdote Anthony Komaroff Antibiotics Antibodies Anxiety Aphthous Ulcers Apnea Asthma Autism Autoimmune Disease Behçet’s Ben Katz Bertrand Russell Biology Blood sugar Bruce Carruthers Caffeine Calcium Cancer Capitalism Cardiology Carmen Scheibenbogen CBT/GET CDC Celiac Disease Cereal Grains CFIDS Chagas Charité Charles Lapp Christopher Snell Chronix Clinician Coconut Milk Cognition Common Sense and Confirmation Bias Conversion Disorder Coxiella Burnetii Coxsackie Criteria Crohn's Cushing's Syndrome Cytokine Daniel Peterson Darwinism David Bell Depression Diabetes Diagnostic Differential Disease Diseases of Affluence DNA DNA Sequencing Dog DSM5 EBV EEG Eggs Elaine DeFreitas Elimination Diet Enterovirus Epstein-Barr ERV Etiology Evolution Exercise Challenge Faecal Transplant Fame and Fraud and Medical Science Fatigue Fatty Acids Fibromyalgia Francis Ruscetti Fructose Gene Expression Genetics Giardia Gordon Broderick Gulf War Illness Gut Microbiome Harvey Alter Health Care System Hemispherx Hemolytic Uremic Syndrome Herpesviridae High Blood Pressure Historic Outbreaks HIV HPV Hyperlipid Ian Hickie Ian Lipkin Immune System Infection Intermittent Fasting It's the environment stupid Jacob Teitelbaum Jamie Deckoff-Jones Jo Nijs John Chia John Coffin John Maddox José Montoya Judy Mikovits Karl Popper Kathleen Light Kenny De Meirleir Lactose Lamb Laszlo Mechtler LCMV Lecture Leonard Jason Leukemia Life Liver Loren Cordain Low Carb Low-Dose Naltrexone (LDN) Luc Montagnier Lucinda Bateman Ludicrous Notions Lumpers and Splitters Lyme Mady Hornig Mark Hasslett Martin Lerner Mary Schweitzer MCS ME/CFS Medical Industry Medicine is not based on anecdotes Michael Maes Migraine Milk and Dairy Mitochondria MMR Money and Fame and Fraud MRI Multiple Chemical Sensitivity Multiple Sclerosis Mutton My Symptoms n-1 Nancy Klimas Narcolepsy Neurodermitis Neuroscience NK-Cell Nocebo NSAID Nutrition Obesity On Nutrition Pain Paleo Parathyroid Pathogen Paul Cheney PCR Pharmaceutical Industry Picornavirus Placebo Polio Post Exertional Malaise POTS/OI/NMH PTSD PUFA Q Fever Quote Rare Disease Research Retrovirus Rheumatoid Arthritis Rituximab RNA Robert Gallo Robert Lustig Robert Silverman Robert Suhadolnik Rosario Trifiletti Sarah Myhill Sarcasm Science Sequencing Seth Roberts Shrinks vs. Medicine Shyh-Ching Lo Simon Wessely Sinusitis Sjögren's Somnolence Sonya Marshall-Gradisnik Speculation Stanislaw Burzynski Statins Stefan Duschek Study Sucrose Sugar Supplements Symptoms T1DM T2DM There is no such thing as Chronic Lyme There is no such thing as HGRV Thyroid Tinitus To Do Toni Bernhard Tourette's Treatment Tuberculosis Vaccine Video Vincent Lombardi Vincent Racaniello Virus Vitamin B Vitamin D VP62 When Evidence Based Medicine Isn't Whooping Cough Wolfgang Lutz WPI XMRV You fail science forever