1.   Calcium-rich legumes also contain compounds that block calcium absorption.

2.   In addition, Xenical can block absorption of vitamins D and E, and beta carotene.

3.   Instead of acting in the brain to combat appetite, it acts after meals to block absorption of fat in the intestines by binding to an enzyme called lipase.

4.   It also blocks the absorption of vitamins D, E, K and beta carotene when consumed along with olestra-laced food.

5.   Meridia also increases the levels of serotonin and a hormone called norepinephrine, but it does that by blocking their absorption into the body.

6.   Olestra also blocks the absorption of the fat-soluble vitamins A, D, E and K, which could reduce vitamin intake below the daily recommended amounts.

7.   SeQuester tablets, top right, promised to block the absorption of fat by the body.

8.   Some help the body burn fat faster or block the absorption of fat in food.

9.   The patient may have an intestinal infection that blocks the absorption of nutrients, or a neck tumor that interferes with swallowing.

10.   Unlike anti-obesity medications that suppress appetite, Xenical works by blocking the absorption of fat in the intestines.