I don't really like the word 'diet' - to me it implies a short-term effort, normally evolving eating lots of 'healthy' low-fat foods, staying away from fat of any kind and endless hours of boring cardio.
If you go into a supermarket and pick-up a low-fat ready meal, have a look on the back and make a note of how much extra sugar, salt and flavourings there are compared to a normal ready meal. Even better, compare the ingredients in both to the same meal cooked at home. The ready meal may be lower calorie but the extra sugar and salt won't satisfy you - if anything, the salt will make you thirstier and the whole thing will leave you still hungry and wanting more. Look at low-fat chocolate bars - how many times have you eaten one then thought "their low-fat, so I'll have another one"? I know I have. Surely it's better to have just one normal snack and enjoy the taste, rather then eating multiple-numbers of fake tasting food?
The low-fat ready meal industry is worth millions as people get sucked into all the claims about how their making their meals to help you lose weight - this is nonsense, their making their meals to make them money. If they really cared about your health, they would be telling you to eat veg, good quality meat & fish, fruit and drink plenty of water. But obviously, this won't make them money.
But their marketing is so powerful that when you tell someone your on a diet and that you have switched to low-fat foods, they give you a pat on the back for trying. Because it's obviously better to have low-fat food then full-fat, right? In fact, it isn't. Quite often, the only difference in calories between the two meals is about 50kcal. You may think that's good, but if you compare a can of Pepsi Max with no kcal to an apple which has 50kcal, which is going to be better for you? Unless Pepsi have now added fibre and Vitamin C to Pepsi Max then it's a no-brainer. Also the apple has a low-GI index, meaning it will keep you fuller for longer.
If a food has more then 6 ingredients in it, then it's probably not going to do you any good if you eat it all the time. A day's food based on low-fat ready meals and snacks? No thank you. A normal diet will leave you feeling fuller, stronger and healthier. The vitamins in veg and fruit were there from the beginning, not added later in a factory. Now I know I do have a protein bar here and there (and I do have a soft spot for Mars bar's and dark chocolate), and protein shakes after I've been to the gym but as I said before, to me most things can be allowed in moderation. Plus, if I am going to eat something processed, I would rather have a protein bar which will at least have some minor benefits (protein, BCAA's). If I do have something as a treat, I try to stick to dark chocolate with at least 70% coco solids.
Clean food will also taste better and will over time clean your palate - I certainly found this to be true and I found I enjoyed my food even more then before. And I haven't even mentioned how much good all those unprocessed vitamins and minerals will do to your body.
I get strange looks and comments sometimes when I'm sitting at lunch eating 95% meat gluten-free sausages with hard-boiled eggs and some veg, but it's doing me a lot more good then your shop-made sandwich with who-knows what added 'extras' it has, on pale looking flimsy bread. Plus, I won't be having a mid-afternoon carb-crash from the bread, which used to happen to me a lot and something that I know many people suffer from. Just because something doesn't fit the normal concept of what is accepted as breakfast, lunch or dinner, doesn't mean you shouldn't have it. I'll rather have bacon, eggs and veg for breakfast then a bowl of cereal.
Fat also has a bad press but the truth of the matter is that your body needs good fat for fuel and energy. It's a common mistake that fat makes you fat but it doesn't - it's all the sugar hidden in today's popular food. Many years ago your body was designed to burn fat for energy but over the years agriculture has made us more reliant on carbs for energy, so now you find that we use this for energy rather then fat, and that fat ends up being stored as excess weight. The idea is to convert your body back into using fat for energy - the simplest way of doing this is to try and get all your carbs from wholesome sources, like veg and limited fruit.
So, when you tell someone about your way of eating and they laugh or mock you - ask yourself who is the more healthier looking and the fitter. The chances are they will resent the fact that you've taken the time to do something about your health and fitness, while they just sit there feeling sorry for themselves. If you've taken the time and effort to improve your lifestyle, what's stopping them, aside from laziness?
Talk soon,
Dan