Cracked heels can be painful sometimes. This may lead to lack of moisturizing, excessive pressure on your feet pads and deficiency of omega-3 fatty acid and zinc. Most old people tend to suffer from cracked heels. These are not harmful in any way but often the skin starts to bleed if the cracks are too deep. You can keep your feet moisturized regularly. Application of ripe banana for 10 minutes can help to heal the cracked heels. You can try to cure these by soaking your feet in lemon juice for more than 10 minutes. You can follow this routine until you find effective results. Mixture of glycerin and rosewater can also be beneficial for your cracked heels. You should have calcium and iron rich diet to avoid having cracked heels.