Lip Sores Caused By Worms Are Canker Sores Caused From Eating Too Many Sweets?

Are canker sores caused from eating too many sweets? - lip sores caused by worms

I currently have two of the sores in the mouth, somewhat painful and irritating. These are small ulcers. I drink pop and eat too many sweets. Do not use too much sugar causes pain to ulcers, or caused by something else? Salaries and it is safe and effective to relieve cancer sores Inexpesive? Thank you.