Nuts contain a rich mixture of mainly MUFA and PUFA fat, antioxidants, fibre and minerals.
Observationally, nut intake is associated with less CVD. Many recent RCTs have shown that they reduce total and LDL-cholesterol and have some benefit for other metabolic CVD risk factors, e.g. insulin resistance and hypertension. They do not appear to have adverse impact on weight or lipid peroxidation.