By Dr. Mallika Marshall

BOSTON (CBS) – For years doctors have been advising Americans to avoid eating certain foods high in cholesterol like eggs, lobster and shrimp, but new research suggests that this is not sage advice.

It turns out your blood cholesterol is dictated much more by genetics than by how much cholesterol you eat in your diet.

That said, saturated fats, like butter, cream, cheese, and animal fats play a larger role in the level of bad cholesterol in your system and those foods should still be limited to maintain ideal cholesterol levels.

Dr. Mallika Marshall says people with diabetes and certain other medical conditions should limit cholesterol-rich foods, but for everyone else, eating eggs and shellfish is probably fine.

NAPS

A new study looked at eleven healthy men between the ages of 25 and 32 and restricted their sleep to two hours a night. The next day they had significantly higher levels of stress hormone that can cause elevated blood pressure, heart rate and blood sugar, but when they were allowed to take two 30 minute naps after a night of restricted sleep, those levels returned to normal.

They found a similar effect with a protein that affects the immune system, suggesting that you may be able to reverse the damaging effects of a bad night’s sleep by taking naps the next day.

Dr. Mallika Marshall says the study suggests that people who don’t get enough sleep on a regular basis could possibly benefit from a nap the next day to help their bodies recover.

Dr. Mallika Marshall

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