To complement both Jon Hanna and Fumble Fingers' answers I'd like to add the following:

• Fussy eater; fussy eating or more rarely a fussy food eater
  is usually a child or a toddler who has a very limited diet by choice, and will refuse to eat a long list of foods based on texture and/or aroma, e.g. all vegetables and fruit. In more severe cases this refusal will include any new food that is introduced which may lead to developing a phobia called neophobia.

• An adult who simply forgets to eat is someone who manages to go through an entire day without eating any solids but will often drink copious amounts of sweet coffee, tea or high energy drinks in order to get through the day and make up for the lost calories.

In TV Tropes, Forgets To Eat is described light-heartedly as someone:

... who's notorious for ignoring their body's need for nutrition and has to be reminded to eat. [...] as workaholics and others will become so engaged in something that they do forget to eat. Isaac Newton was famous for being so obsessive-compulsive about his work that he would work hours and hours while neglecting to bathe or eat. Because this is common among obsessed gamers, Anti Poopsocking had to be put in place in many games. Science further backs this up, as the nervous system has the digestive system slow and close up if a person is under stress. Nobody wants to stop for a bathroom break or snack when being chased by a bear.

To complement both Jon Hanna and Fumble Fingers' answers I'd like to add the following:

• Fussy eater; fussy eating or more rarely a fussy food eater
  is usually a child or a toddler who has a very limited diet by choice, and will refuse to eat a long list of foods based on texture and/or aroma, e.g. all vegetables and fruit. In more severe cases this refusal will include any new food that is introduced which may lead to developing a phobia called neophobia.

• An adult who simply forgets to eat is someone who manages to go through an entire day without eating any solids but will often drink copious amounts of sweet coffee, tea or high energy drinks in order to get through the day and make up for the lost calories.

In TV Tropes, Forgets To Eat is described light-heartedly as someone:

... who's notorious for ignoring their body's need for nutrition and has to be reminded to eat. [...] as workaholics and others will become so engaged in something that they do forget to eat. Isaac Newton was famous for being so obsessive-compulsive about his work that he would work hours and hours while neglecting to bathe or eat. Because this is common among obsessed gamers, Anti Poopsocking had to be put in place in many games. Science further backs this up, as the nervous system has the digestive system slow and close up if a person is under stress. Nobody wants to stop for a bathroom break or snack when being chased by a bear.

To complement both Jon Hanna and Fumble Fingers' answers I'd like to add the following:

• Fussy eater; fussy eating or more rarely a fussy food eater
  is usually a child or a toddler who has a very limited diet by choice, and will refuse to eat a long list of foods based on texture and/or aroma, e.g. all vegetables and fruit. In more severe cases this refusal will include any new food that is introduced which may lead to developing a phobia called neophobia.

• An adult who simply forgets to eat is someone who will manage to go through an entire day without eating any solids but will often drink copious amounts of sweet coffee, tea or high energy drinks in order to get through the day and make up for the lost calories.

To complement both Jon Hanna and Fumble Fingers' answers I'd like to add the following:

• Fussy eater; fussy eating or more rarely a fussy food eater
  is usually a child or a toddler who has a very limited diet by choice, and will refuse to eat a long list of foods based on texture and/or aroma, e.g. all vegetables and fruit. In more severe cases this refusal will include any new food that is introduced which may lead to developing a phobia called neophobia.

• An adult who simply forgets to eat is someone who manages to go through an entire day without eating any solids but will often drink copious amounts of sweet coffee, tea or high energy drinks in order to get through the day and make up for the lost calories.

In TV Tropes, Forgets To Eat is described light-heartedly as someone:

... who's notorious for ignoring their body's need for nutrition and has to be reminded to eat. [...] as workaholics and others will become so engaged in something that they do forget to eat. Isaac Newton was famous for being so obsessive-compulsive about his work that he would work hours and hours while neglecting to bathe or eat. Because this is common among obsessed gamers, Anti Poopsocking had to be put in place in many games. Science further backs this up, as the nervous system has the digestive system slow and close up if a person is under stress. Nobody wants to stop for a bathroom break or snack when being chased by a bear.