Another book is about to come out telling you what Dr. Joe has been telling you. And that is Dr. Joe's cure for everything (more sex) helps you live a long life. It also helps you stay lean.

'Sex Diet' Claims Lust Can Make You Lean

According to an upcoming book — and celebrities like Angelina Jolie and George Clooney's former model-girlfriend Lisa Snowdon — the key to controlling weight is simple: Have more sex!

"A steamy sex life could be the best diet you've ever tried," said author Kerry McCloskey, whose book, "The Ultimate Sex Diet: The Secret Formula for a Slimmer, Healthier, More Passionate Life," will be in bookstores early next year.

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But a strenuous sex life doesn't only help you lose weight. Other health benefits include a longer life span, reduced depression, an improved immune system and a stronger heart.

Spending quality time in the sack can also make you look better — a 1999 study by Dr. David Weeks at Scotland's Royal Edinburgh Hospital found that an active sex life can make you look up to seven years younger.

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"Life is short, so enjoy the ride," McCloskey says in her book, "especially the free one that your partner gives you!"