In 2003 the FDA issued a "qualified" health claim that eating 1.5 ounces of nuts per day will improve health. The word "qualified" means that the evidence is still inconclusive. It suggests rather than proves a certain result. That said, here's what's known about nuts and heart health:
1. People who eat more nuts are less likely to die of a heart attack. Keep in mind, however, that nut eaters are typically lean non-smokers who are also active.
2. People who eat nuts have 2% to 19% lower LDL cholesterol (LDL is the "lousy" cholesterol).
3. Most nut research studies typically give the participants a daily nut serving roughly equivalent to 1/4 cup.
4. Nuts lower triglycerides, raise HDL (HDL is the "healthy" cholesterol)and reduce inflammation.