Ask HN: What are some good datasources for nutrition information?

10 points by brentadamson 7 years ago | 4 comments

I am developing a nutrition instant answer for Jive Search and am looking for data sources for queries like "calories in a big mac", "how much protein is in milk?", etc. I am aware of USDA's API but finding relevant products in their API is somewhat challenging. For instance, finding "butter" returns a lot of irrelevant results:

https://api.nal.usda.gov/ndb/search/?format=json&q=butter&sort=r&max=25&offset=0&api_key=DEMO_KEY

I could apply the food group filter to help with relevancy and filter by "Dairy and Egg Products" but without knowing the food group beforehand makes it difficult and a manual process.

There is the Nutritionix API but that is pretty expensive for the number of calls we will be making (and this is bootstrapped). There is also Open Food Facts, but they seem to be missing basic items such as calories.

vanderZwan 7 years ago |

I know you asked for raw nutritional information, but the topic of healthy food is a lot more complex than that. Different foods also interact with each other, having a significant influence on how they affect your body.

For example, if you eat pancakes, or the same amount of pancakes with fresh blueberries, the latter will give less of a spike/crash in blood sugar despite having more calories.

So this is not quite what you asked, but https://nutritionfacts.org/ by Dr. Michael Greger is an interesting source for what nutrition science has to say about healthy diets. Yes, he is biased towards a diet without animal products, but he is very open about his own biases. Plus, the science really does seem to back that one up anyway.

There is a strong pop-science bent to his presentations that might put some people off, and repeats the same points over and over, but he does use actual nutrition research papers as his sources and takes time to point out caveats with the studies he refers to, and actively seeks out high-standard studies.

Also, the fact that he first recommended cinnamon for better insulin response, then updated that stance when later papers made it clear that they might damage the liver (ceylon cinnamon is safe but has no benefits for insulin response) gives me more faith that he does his best to only give advice that is properly backed up by science.

sethammons 7 years ago |

I wonder what Wolfram Alpha uses.

brentadamson 7 years ago | |

If you click on their "Sources" link it shows a lot of links but then has this note: "This list is intended as a guide to sources of further information. The inclusion of an item in this list does not necessarily mean that its content was used as the basis for any specific Wolfram|Alpha result."

Basically trying to obfuscate where they are really getting the info.

Been thinking more on this...I think I have an idea how to do it: Wikidata has the USDA ID for a lot (but not all) of items. From there we can get the rest.

nickwhite99 7 years ago |

calorieking.com