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Abstract: Gravitational interaction of particles is understood in terms of energy-momentum tensor (EMT) which gives information regarding the fundamental properties of a particle like mass and spin. When the matrix element of the energy-momentum tensor is written in terms of EMT form factors, we get an additional fundamental property, the D-term. The D-term is related to the spatial components of the EMT and refers to pressure, shear force distribution, and how strong forces inside the nucleon balance to form a bound state. However, the proper interpretation of the D-term is still being disputed. The D-term started gaining a lot of attention recently and experiments are ongoing in JLab and are planned in the Electron-Ion Collider in Brookhaven to measure the D-term through the deeply-virtual Compton scattering process. In this thesis, we will present an intuitive explanation of radiative corrections in quantum electrodynamics with examples of electron g-2 and Lamb shift. We will determine the D-term for a bound system like hydrogen and calculate the leading order and next-to-leading order logarithmic correction to the D-term of hydrogen atom. The goal is to verify the claim of [1] that the next-to-leading order logarithmic correction to the D-term of hydrogen follows the same physics as the Lamb shift. As a main result of this thesis, using our discussion of the radiative corrections, we will show that although the D-term has a logarithmically enhanced term like the Lamb shift, the physics is quite different from the Lamb shift.