4. High blood cholesterol level
Lower metabolism means that substances we absorb from food stay for longer in our system before we excrete them o transform them into some other chemical that we need. In some cases, that can be very detrimental to our health, not only because it takes longer for us to synthesize proteins, ATPs, and other molecules that we need, but because some other molecules can accrue in our system and cause some trouble. In the case of cholesterol, which is a fatty substance present in many aliments, it can circulate for a long time in our blood without ever being absorbed or processed inside our cells.
Cholesterol makes our cell membranes more rigid, so it helps give our tissue structure and resistance. However, when deposits of cholesterol grow in the wrong places, they could make some structures too rigid, causing malfunctions or even threatening our lives.