1. Both red and white pitayas can relieve the symptoms of constipation in patients, but the effect of red pitayas in relieving constipation is more obvious.

2. In the past, white-heart pitayas were more common on the market. Later, some red-heart pitayas gradually appeared. In addition to having a stronger taste than white heart dragon fruit, red heart dragon fruit has higher nutritional value than white heart dragon fruit. The carotene content in red dragon fruit is higher, which is more effective in fighting free radicals, can improve the body's immunity, and protect the lens of the eyes.

3. Although both red-heart pitaya and white-heart pitaya can relieve constipation symptoms, the effect of red heart is better. Dragon fruit contains a lot of vitamin C, which can help relieve constipation and lose weight. It also contains water-soluble dietary fiber that can prevent colorectal cancer.