For science class, we’ve been researching about super food and how that could be more healthier than the normal food. I’ve been studying about Pitaya fruit. Pitaya has lots of fiber and that is another important nutrient to the body. It helps you by making it easier to get the waste out of your body. Without getting enough fiber you will gain more weight and the higher risk of getting a heart disease.


According to, there are 22% of Calcium contained in 1 fruit, Pitaya. Compared to the other nutrients in the fruit, that is a big amount, so I decided to search about what calciums do for your body.

Calcium is one of the most important types of nutrient because it helps grow bones and teeth, also keeps them healthy. When we are about teenager we will need lots of calcium because we are still in the process of growing. Kids from 9-18-year-olds need to take 1300mg of calcium per day. If you don’t get enough calcium and vitamin D for your body, it will take the calcium away from your bones and that will make your bones weaker, which will make it a higher risk to get bone disease osteoporosis. Just because you take so much calcium it doesn’t mean you’re healthy. In fact, taking too much calcium can cause negative effects too. The most amount of calcium you can take in a day is 3000mg if you’re 9-18 years old.

I decided to compare Milk and Pitaya because they both have lots of calcium and wanted to check which product would be a better option to take.

The Money issue on Pitaya is that it could be expensive for some people compared to normal fruits since it is labeled as “Super Food”. In average it costs about 500~1000 yen per Pitaya fruit. Average 1000ml milk in Japan costs about 300 yen and contains 28% of calcium per cup. I think that this will make everyone want to buy milk more than Pitaya since milk is cheaper and it has more calcium.

In conclusion, I think that Pitaya is a “Super Food” since it contains important nutrients but it could be hard to afford so we can also be healthier without eating Pitaya by thinking of a more balanced diet like this chart below from

Table 1 – Nutrition Needs for Children

Table 1 provides a summary of the food chart for a clearer idea of nutrition for children.

Nutrition Food Group Recommended %
Carbohydrates Cereals and grains, etc. 33%
Vitamins and Minerals Various fruits and vegetables 33%
Meat Protein Fish, meat and eggs 12%
Milk Proteins Dairy products 15%
Fat and Sugar Fatty foods, sugary sweets etc. 7%

Table from



“Balanced Diet Chart for Children.” WWW.MD-HEALTH.COM, 22 Apr. 2017. Web. 24 Apr. 2017.

“Calories in Tropical Fruit Dragon Fruit (Pitaya).” Myfitnesspal. MyFitnessPal, Inc., 2017. Web. 20 Apr. 2017.

“明治 おいしい牛乳.” 西友 – ネットスーパー. Seiyu GK, 2017. Web. 22 Apr. 2017.

“Calories in Milk – Whole, 3.25% MilkfatCalories in Milk – Whole, 3.25% Milkfat.”Myfitnesspal. MyFitnessPal, Inc., 2017. Web. 20 Apr. 2017.

“Calcium.” National Institutes of Health. U.S. Department of Health and Human Services, 17 Nov. 2016. Web. 22 Apr. 2017.

“Calcium/Vitamin D.” National Osteoporosis Foundation. NOF, 2017. Web. 20 Apr. 2017.

“Calcium: What You Need to Know.” American Academy of Family Physicians, Mar. 2017. Web. 23 Apr. 2017.