Good news if you already consume tuna on a regular basis, itâs high in niacin compared to many other foods. Itâs also a good source of omega-3s as well as protein. There are concerns about the mercury content, so you may not want to rely on tuna for your daily niacin consumption, but itâs nice to have once in awhile. Serving Size (100 grams), Niacin (5.8milligrams), 184 calories.
At the end of the spinal column is the coccyx or tailbone. Most people have 33 vertebrae in total, although there may be 32 or 34. Variations are usually found in the lumbar or sacral regions.
A normal thoracic spine extends from the 1st to the 12th vertebra and should have a slight kyphotic angle, ranging from 20Â° to 45Â°. When the roundness of the upper spine increases past 45Â° it is called kyphosis or hyperkyphosis.