Your low-calorie diet might be eating away at your muscles (and your mood).

Remember the old mantra “calories in vs. calories out”?

And could this be one of the issues in our obesity epidemic?

Hands holding a plate of salad

Getty / Supreeya Chantalao / EyeEm

(Or togain the weightand energy you need if you’re currently underweight!)

So how do you know if you’re underdoing it?

Here are seven signs you might not be eating enough calories, according to RDs.

Irritability can also be a big issue in those who aren’t fueling properly," Moskovitz says.

That way, the fat is handy as a protective mechanism since the body thinks it needs it.

“That means you’ll lose lean muscle mass which can also impact your bone health.

It could put you at risk for osteopenia, or even osteoporosis,” Moskovitz says.

“Your body can’t rest when it’s looking for more nutrients,” Moskovitz says.

For females, a missing period can be a sign of not eating enough calories.

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