Startups have tried, and mostly failed, to compete with shakes like Ensure and Boost. They say the brands' ties to health care providers make it tough.

Upstarts have tried, and mostly failed, to compete with shakes like Ensure and Boost. They say the brands’ ties to health care providers make it tough.

Years ago, I was diagnosed with several digestive problems that keep me from getting all the nutrients from the food I eat.The solution to this was simple: drink Boost/Ensure. Since the nutrients ...