Will this still work if I am not a woman?

Sure! This information works well for men too, but its intended for women because of the type of weight you will be gaining. Many men want to gain hard muscle weight, while women want a softer look. These methods can help either sex gain weight, but if you are aiming for a muscular look, you will have to figure out the weight training part on your own.

Is this safe to use if I have health conditions?

Before starting anything different in your health care routine, you must consult your doctor - because the answer really depends on what health condition you have.

More on Weight Gain For Women here!