Your husband cannot read your mind, even at 7 years of marriage. Ask to talk to him in private and tell him what is going on in the moment. If you explain the issue, he would have an easier time understanding the problem and solution. Right now, all he knows is you didn't eat much and you're mad at him.

As someone who has parents, understand this: they forget what they learned about pregnancy and development pretty fast. Kids are a whirlwind. She also had different information in her time, which probably promoted eating vegetables straight from the dirt or something for added minerals. I have a hard time believing there was any real malice.