Bounties attract serious brainpower to the challenge.
People are trying to track and shape their dietary habits to live a longer and healthier life. Smartwatches, fitness trackers, and smartphone apps are being developed to tackle calory intake, healthier cooking, and workout routines. Workouts are being specifically tailored to your body type and daily routines, recipes are becoming more nutrient and fun, but calory intake remains to be very inaccurate due to the manual data input. In other words, the fatal flaw of the existing programs is that they rely predominantly on guesswork when it comes to portion size . As it's the first and thus, the most important step in dietary and workout planning, it should be more precise.
To remove the weakest (human) link, I suggest using a dental implant capable of tracking the nutrient intake.
The existing solutions and their flaws
The current standard are the smartphone apps that motivate you to write down what you eat and drink. They make it easier for you by allowing you to record voice notes or use shortcuts, but it requires time and effort. --> low accuracy
In 2015 there was a great attempt to automatize the calorie counting by the GoBe bracelet. It relied on a technology called bioimpedance. When we eat, nutrients go to cells, which affects its water balance. These guys measured the water flow and constructed a glucose curve. Adding it to the new algorithm, they managed to measure 514 calories in a person which ate 550-calorie meal (which is pretty accurate!) . The problem is that it requires long calibration process and you need to wait few hours after the food/beverage intake for the results to occur. Today, they are bragging with 89% accuracy in calorie tracking, stand on 36 patents and are my biggest rivals . --> time-consuming, thus, not adequate for treating acute health issues like allergies, poisonings or diabetes
I also read story of a tooth sensor capable of measuring the glucose, salt and alcohol . Similar device was used to measure oral behaviours (jaw movements) . --> small scope of nutrient detection
The last device is frighteningly close to my idea, but can also serve as a great mould to steer in the right direction. I imagine the device to be a tooth implant or a piercing-like device that integrates inside your tooth. The optimal position would be in the back of the mouth (molars), so that it gets in contact with all the chewing compounds you intake.
It should have the following functions:
keep track of chewing and swallowing habits via integrated accelerometer
keep track of the quality and quantity of the diet (food and beverage types, key nutrients, glucose, alcohol, salts, potential poisons or harmful compounds)
keep track of drug intake
connect to the nearby authorized device
give a detailed review of dietary habits
alert on potential allergic reactions, intolerances or other dietary issues that could occur (based on the user's profile)
alert on potential diseases or disorders that could occur
alert the diabetics on potentially low/high sugar levels
suggest changes in dietary plan
have add-ons capable of microbiome tracking (smart pill), heart attack prevention (nitroglycerine boosters), etc.
The technology of nutrient detection would be a combination of accelerometer , raman detector (like the one used in TellSpec ) and a set of functional RF-Trilayer Sensors (used in dental sensor ) .