Does anyone know about vitamin B complex

[Aractus]

And how it's tied into energy metabolism? Or even what this will do to help me lose weight?

I cannot exercise much due to activity induced asthma, so doing simple tasks at home sends me to my nebulizer for a treatment. I've changed my diet over two and got rid of all processed foods in the house. I don't know what else I can do. I tried walking around the block here but I got so winded halfway through that I had to take four puffs off my rescue inhaler.

I'm tired of not being able to get fit.

Yes I can help you here. Well help you with information anyway.

To be honest I haven't really looked into b-vitamins and their use for weight loss. I did a quick write up on multivitamins a few days ago, which is an issue I will revisit later. Suffice to say it's best to stay away from supplements that you don't need. Look at this way, Sports Drinks are legitimately formulated for athletes, and when used in that context they can be beneficial - but when non-athletes use them outside of their intended purpose they can do more harm than good. In fact another interesting thing worth noting is that every diet app (yes every one) is pretty bad at giving accurate information about food energy content, they all underestimate the kilojoules/Calories in food. That's not a reason not to use one, but a warning that they will misinform you.

Sustainable weight-loss for obese people is difficult, and successful programs need to be multi-component. There's some really high quality recent systematic reviews/meta analyses on this specific topic, and they are open access so I suggest to have a read of them. Specifically look at Ramage et al 2014 and Johns et al 2014 that looked at long term weight-loss success comparing different methods. Both find that multi-factored methods are the most successful - i.e. programs that combine diet, exercise, and behaviour change. Mozaffarian et al 2011 is another good publication, with a very different way of looking at long-term weight change (it is a large longitudinal observation study).

"Overall, for significant weight loss of at least 5% from baseline, a sustained reduction in energy intake was necessary. Often, this was facilitated by a reduced fat intake and increased fibre in the diet. In the majority of studies, a variety of other diet strategies was used to support the diet intervention goals, for example, to maintain diet quality or to prevent hunger or improve satiety. Furthermore, some form of PA [physical activity] and BT [behaviour training] was a critical component of the interventions in the studies that demonstrated successful weight loss."
-Ramage et al 2014

I think you should put three things onto your check list: Diet, Physical Activity, Behaviour Training. In terms of Diet you have plenty of easy options, noting though that it's only one part of the solution. A commercial program will work in combination with the other two, or you can see a nutritionist and have something designed for you, or you can simply keep a food diary and redesign your meals around either whatever national diet plan is available in your country (heck you can use Australia's, the UK's, the USA's, Japan's, they're all very similar anyway), or DASH, or even the Mediterranean diet. Note they get progressively more restrictive in terms of food choice in the order I just wrote (national diet plan > DASH > Mediterranean).

Behaviour training is interesting. I'll admit I haven't read widely on this specific topic in regards to it, but I have read about it on other topics - and it often seems that any form of BT is just as good as any other. Have a read though Ramage et al on that, it has a few ideas there - you don't have to go see a shrink, you can join a support group, keep a food diary, stress management, etc. A Fitbit is probably a good idea there, as it can help train you to estimate distance and number of steps (a quite useful skill when increasing one's physical activity level).

Finally Physical Activity. This is what you may find challenging as it requires a large chunk of time every day, and noting that you get activity induced asthma you need to find physical activities which you can do. Walking, Hiking, Swimming, Weights and resistance training, Dancing? I'm out of ideas now, but whatever you can do without inducing an asthma attack would be a good start. Remember the goal is only to increase you physical activity level (PAL) to 'moderate', not become an athlete.