Just mention you are trying to lose a few pounds, and you will be inundated with Diet Experts. Some of them may understand the science, and some of them may have lost weight themselves, and sometimes both, but you can probably bet on neither.
"Look, here's what you need to do."
People who can't keep a pound off will be telling you to stay off carbs and eat all meats, and others will be telling you to banish meats and stick to carbs. Or that if you eat all bananas in the morning, you can eat whatever you want the rest of the day. Some people will tell you it's all about how often you eat, and other people will say it's all about eating nothing after 7pm (a sort of elderly Gremlin diet).
"Midnight? I can't even stay up past 8 anymore."
Whatever they tell you, they will insist that this is the only right way, that this is THE weight loss secret. It doesn't matter what else you eat, as long as you get that morning banana. Or you stay off carbs. Or whatever. If you don't want to listen, they'll throw up their hands and encouragingly tell you that you're doomed to failure.
Morning Banana would be a good name for a band.