Do chemical reaction speed up by applying magnetic field?

Referring to following statements, I would like to know on whether chemical reaction can be speed up by applying magnetic field or not. It seems that under magnetic field, compound is dispersed more and smaller particles are formed, with increasing surface area of particles would speed up the chemical reactions.

Applying this situation within our body, under magnetic field, would the signal of our nervous system be stronger by increasing surface area of compounds for chemical interactions?

Does anyone have any suggestions?
Thanks in advance for any suggestions

‘The results indicate that when a magnetic field exerted on hop extract, this compound is dispersed more and smaller particles are formed,’ the researchers write in their paper.

‘Therefore, the specific surface areas of the particles are increased and interact with larger numbers of hydrophobins.’

How magnets stop beer overflowing
http://www.dailymail.co.uk/sciencetech/article-2877550/How-magnets-improve-BEER-Magnetic-field-reduces-foam-make-brews-cheaper-bitter-too.html