It's true that traditional medicine and nutritionists do recommend this low fat/low animal product approach.
but the research is proven, and shown that it is not the key to optimal health at all.
That old "food pyramid" and a sedentary lifestyle was a smooth pathway to adult-onset (type II) diabetes (aka, chronic insulin resistance), was it not?
It's hard to commit to a real lifestyle change, but that's what it takes. Changing eating habits (abandoning "junk" carbs and excess starches, eating more protein, healthy fats, veggies, etc) plus pursuing regular sustained (45min+) exercise 3-4 times a week is a tough go, but it really will reward you over time.
There's a book that I re-read every so often to remind myself (at 52) why I even bother trying to live healthy. If you're over 40, it's a must-read. It's well-written (and humorous) in a way that you won't want to put it down. http://www.amazon.com/Younger-Next-Year-Strong-Beyond/dp/076114773X/ref=sr_1_1?ie=UTF8&qid=1366338749&sr=8-1&keywords=younger+next+year. It has a pretty insightful chapter on alcohol consumption to boot.
There's no magic pill. Like Yooper said, you've got to gain knowledge and put it to use. One of the keys for me was finding a type of exercise I really enjoy (as I hate going to the gym). That used to be karate training and competing until my joints said no more. Now it's cycling. It takes several hours a week on either the road bike or mountain bike for me to maintain a healthy weight and get a good lab report at check-up time. I started off in 2004 (at 265lbs) doing 1-1/2 to 2 mile slow-pace rides around the neighborhood, slowly improving over months and years. Weather permitting, it's now 80-100 miles/week (at 225lbs) in club group rides. The current me could easily out-do the me of 10-15 years ago without really breathing hard.
I still enjoy 1-2 beers per day, usually spaced out in smaller (4-6oz) servings (a nice side benefit of kegging) to reduce the insulin over-reaction.
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