Use of metformin is not associated with insomnia. In addition, a long-term study of people with Type 2 diabetes treated soon after diagnosis with metformin showed a lowered risk of death, heart attack, and vascular problems; whether these benefits extend to everyone who takes it is not known. 5. TRUE.
Afro-Eurasia is the largest land mass on Earth. It is the combine super continent of Asia, Africa, and Europe.
Pando, a clonal colony of the aspen tree, is widely considered to be the largest such organism by mass. Even if such colonies are excluded, trees retain their dominance of this listing, with the giant sequoia being the most massive tree. Among animals, the largest species are all marine mammals, specifically whales.