What are some current nutritional issues, such as obesity or malnutrition, that can affect school student?

You just named two!

In connection with malnutrition is the situation when some children are sent off to school without any breakfast (no food in the house, mom's not up, or whatever). Without food (fuel) to get the children's brains working, they won't do well academically, not to mention physically. Also, if they're hurting because of their empty, growling tummies, they aren't going to learn much either.

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Having breakfast before school starts helps students perform in ...

Having breakfast before school starts helps students perform in class. By Jackson Citizen Patriot staff. March 06, 2009, 5:00AM ...
(Broken Link Removed)

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Breakfast before School Works -- More Proof

Example: finding a way to make sure your child has breakfast before school is a fundamental step that all parents can take. ...
http://www.schoolfamily.com/blog/11/21/breakfast-before-school-works-more-proof

One big issue is the non-cafeteria food (cokes, candy, chips): these are nutritionally deficient. The problem is that many kids live on these (cokes, candy) at school. I personally think these are more dangerous than guns at school.

Some current nutritional issues that can affect school students include:

1. Obesity: The prevalence of childhood obesity has been increasing globally. It is primarily caused by unhealthy dietary habits, lack of physical activity, and sedentary lifestyles. Obesity can lead to various health problems, such as diabetes, cardiovascular disease, and poor mental health.

2. Malnutrition: Despite the widespread issue of obesity, malnutrition still affects many school students. Malnutrition can take two forms: undernutrition (lack of adequate nutrients) and overnutrition (excessive intake of unhealthy foods with low nutritional value). Undernutrition leads to stunted growth, cognitive impairments, and weakened immune systems, while overnutrition can cause obesity-related health issues.

3. Food Insecurity: Many school students experience food insecurity, which means they do not have consistent access to enough nutritious food. Food insecurity can negatively impact a student's physical and cognitive development, hinder their academic performance, and increase the risk of obesity or malnutrition.

4. Unhealthy Food Environment: Schools often have vending machines, cafeterias, and snack bars that offer processed and unhealthy food options. This can lead to poor dietary choices among students, contributing to obesity and other nutrition-related issues.

To tackle these nutritional issues, it is important to promote healthy eating habits and create a supportive environment in schools. This can include implementing nutrition education programs, providing access to nutritious meals and snacks, encouraging physical activity, and involving parents, teachers, and communities in promoting a healthy lifestyle.