Black lips or having very dark colored lips is contributed by several factors and can be used as indicators for certain conditions that are happening inside the body. Though very rare, there are certain severe medical conditions that can cause the lips to turn a darker shade or even black like having cancer. It can be contributed by living a modern lifestyle, certain eating habits, and some medications. There are patients that naturally have black lips or dark-colored lips.
Substantial - either now or in the next three months. 1  significant harm or danger due to your physical or mental health or behaviour.  being unable to carry out many personal care and daily household chores, causing significant risks to your independence.
A need is something that is necessary for an organism to live a healthy life. Needs are distinguished from wants in that, in the case of a need, a deficiency causes a clear adverse outcome: a dysfunction or death. In other words, a need. In other words, a need is something required for a safe, stable and healthy life (e.g. food, water, shelter) while a want is a desire, wish or aspiration. When needs or wants are backed by purchasing power, they have the potential to become economic demands.