For patients that suffer from muscle weakness, pears can be very helpful due to its content of copper and iron. Copper facilitates and improves the uptake of minerals into the system, and increased levels of iron mean that red blood cell synthesis increases. Iron is an important part of hemoglobin and can prevent fatigue and muscle weakness.
Brazil nuts contain a high amount selenium. Selenium is an important mineral and acts as an antioxidant that stimulates the creation of more antioxidants. Toxins in the body are particularly associated with the aging process, as they are one of the primary causes weakened muscles, and a generally older appearance.