As I get older, it gets more difficult to loose weight and stay in shape.

NB Spelling: difficult to LOSE weight Can't anybody spell properly these days? Below, you have three answers. Two are from native speakers and two are from professional teachers. One of these people happens to be both a native speaker and a professional teacher. You would think that at least one of these people would know the difference between 'lose' and 'loose', wouldn't you?

"as long as I become older it would be harder/ difficult to loose my wight and be in shape." As long as I become older - you will always get older! ALWAYS! "as long as" is usually used for things that can stop. "As long as I'm here" (because I can leave), "as long as it takes" (the amount of time it takes to finish something) It would be harder - This is used in conditionals, the past of will, expressing desire, polite request Your sentence needs a complete re-write, and what you are looking for is called a "conditional" There are 4 types, and the specific one you are looking for is "scientific fact" fact: Old = hard to loose weight! This conditional looks like this: present simple + present simple (the 0 conditional) The older I get, the harder it is to loose weight.

I would rephrase it like this: as I become (or get) older it will be harder and harder to loose weight and stay in shape.

Hey! It seems to be a zero conditional sentence from the meaning, so I'd rather use "As long as I become older it is harder to lose my weight and be in shape"