I am 63 and have lived most of my life consuming large quantities of dairy products. I drink at least 4 pints of full fat milk and preferably "Unpasteurised" milk a day. It's fabulous! I could live without anything except milk!
The goodness in milk beats any other drink. The recovery rate from exercise and exertion is twice as fast drinking milk as water. Energy drinks and Coke etc. are poison and skimmed or semi- skimmed milk is a waste of time. Without the fat our systems can't absorb the vitamins and minerals in the liquid.
The health fascists like to frighten us but our bodies "tell" us what is best for us. Some people can't eat or drink what others would die without but unless you take in heavily processed food and fizzy drinks most things "natural" are going to be OK.
The five -a-day myth is rubbish as well. I rarely ever eat fruit or vegetables and only ever have butter - no spreads.
Things like Flora have a chemical make-up closer to "Plastic" than butter and are very bad for us.
Ignore the "Sell by" and "Eat By" dates they are a marketing tool and mean very little. Trust your senses. If it smells bad it is bad but if not eat it. I eat things days and weeks after these dates run out. No problems.
My favourite foods are old fashioned favourites like Cottage Pie, stews, eggs and bacon, Chicken, soups ,fish, cheese, corned beef, mashed potato, pies etc. and if you are a student you can live very cheaply eating all of these.
I am physically stronger than many men my age and have a lot of stamina. I have always had high energy levels and no problems with blood pressure, cholesterol or anything else. I have had these checked very regularly and they are always good. I give blood regularly and have excellent Iron levels.
We are walking chemistry sets and need to find what mixes best for each of us. If you put the wrong fuel in we react like an engine and we don't run well but if we find the right mixture we spin like a top. If your try something that doesn't suit you Don't" have it again. It is as simple as that. Enjoy your life!