What should I give up for lent to better my health?

Instead of seeing this in terms of giving up something, why not widen the parameter to include doing something extra? Instead of giving up deserts completely, why not swap to a fresh or canned fruit? Why not make it a point to eat five full servings of fruits and veggies per day, or swap out the refined flour products for wholegrain foods instead? Where you'd have cold cereal, have a bowl of oatmeal, with grated apple and cinnamon. Choose wheat bread over white bread, brown rice over white. That sort of thing is far healthier in the long run, and will help with the hypoglycemia as well. Sugar, or at least carbohydrates, are the fuel your body runs on, so giving it up isn't an answer. A smarter solution is to be picky about what carbs you do eat, and to choose complex carbohydrates over the simple ones. You don't have to give up sweets entirely, just chose wiser ones. And Lent isn't just about giving up things, it's making a sacrifice to improve yourself. It can mean spending more time helping somebody, volunteering to help out in a soup kitchen, etc- and giving up time instead of things. Regardless of what you choose to do for Lent, changing the diet is always a good move anyway. Just don't sign off sweets completely, that will just make you miserable and feeling deprived. That usually triggers you to overindulge when you break down and give in, and then kick yourself for doing it. Better to change to better choices, and think in terms of what you can take on rather than give up.